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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
Future Technology Devices International Ltd FT4232H Quad High Speed USB to Multipurpose UART/MPSSE IC
The FT4232H is FTDI's 5th generation of USB devices. The FT4232H is a USB 2.0 High Speed (480Mb/s) to UART/MPSSE ICs. The device features 4 UARTs. Two of these have an option to independently configure an MPSSE engine. This allows the FT4232H to operate as two UART/Bit-Bang ports plus two MPSSE engines used to emulate JTAG, SPI, I2C, Bit-bang or other synchronous serial modes. The FT4232H has the following advanced features:
* * * * Single chip USB to quad serial ports with a variety of configurations. Entire USB protocol handled on the chip. No USB specific firmware programming required. USB 2.0 High Speed (480Mbits/Second) and Full Speed (12Mbits/Second) compatible. Two Multi-Protocol Synchronous Serial Engine (MPSSE) on channel A and channel B, to simplify synchronous serial protocol (USB to 2 JTAG, I C, SPI or bit-bang) design. Independent Baud rate generators. RS232/RS422/RS485 UART Transfer Data Rate up to 12Mbaud. (RS232 Data Rate limited by external level shifter). FTDI's royalty-free Virtual Com Port (VCP) and Direct (D2XX) drivers eliminate the requirement for USB driver development in most cases. Optional traffic TX/RX indicators can be added with LEDs and an external 74HC595 shift register. * * * Adjustable receive buffer timeout. Support for USB suspend and resume conditions via PWREN#, SUSPEND# and RI# pins. Highly integrated design includes +1.8V LDO regulator for VCORE, integrated POR function and on chip clock multiplier PLL (12MHz - 480MHz). FTDI FT232B style, asynchronous serial UART interface option with full hardware handshaking and modem interface signals. Fully assisted hardware or X-On / X-Off software handshaking. UART Interface supports 7/8 bit data, 1/2 stop bits, and Odd/Even/Mark/Space/No Parity. Auto-transmit enable control for RS485 serial applications using TXDEN pin. Operational configuration mode and USB Description strings configurable in external EEPROM over the USB interface. Low operating and USB suspend current. Configurable I/O drive strength (4,8,12 or 16mA) and slew rate. Supports bus powered, self powered and highpower bus powered USB configurations. UHCI/OHCI/EHCI host controller compatible. USB Bulk data transfer mode (512 byte packets in High Speed mode). Dedicated Windows DLLs available for USB to 2 JTAG, USB to SPI, and USB to I C applications. +1.8V (chip core) and +3.3V I/O interfacing (+5V Tolerant). Extended -40C to 85C industrial operating temperature range. Compact 64-LD Lead Free LQFP or QFN package +3.3V single supply operating voltage range.
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Neither the whole nor any part of the information contained in, or the product described in this manual, may be adapted or reproduced in any material or electronic form without the prior written consent of the copyright holder. This product and its documentation are supplied on an as-is basis and no warranty as to their suitability for any particular purpose is either made or implied. Future Technology Devices International Ltd will not accept any claim for damages howsoever arising as a result of use or failure of this product. Your statutory rights are not affected. This product or any variant of it is not intended for use in any medical appliance, device or system in which the failure of the product might reasonably be expected to result in personal injury. This document provides preliminary information that may be subject to change without notice. No freedom to use patents or other intellectual property rights is implied by the publication of this document. Future Technology Devices International Ltd, Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow G41 1HH United Kingdom. Scotland Registered Company Number: SC136640
Copyright (c) 2009 Future Technology Devices International Limited
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
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* * * * * * * * * *
Typical Applications
Single chip USB to four channels UART (RS232, RS422 or RS485) or Bit-Bang interfaces. Single chip USB to 2 JTAG channels plus 2 UARTS. Single chip USB to 1 JTAG channel plus 3 UARTS. Single chip USB to 1 SPI channel plus 3 UARTS. Single chip USB to 2 SPI channels plus 2 UARTS. Single chip USB to 2 Bit-Bang channels plus 2 UARTS. Single chip USB to 1 SPI channel, plus 1 JTAG channel plus 2 UARTS. Single chip USB to 2 I C channels plus 2 UARTS. Numerous combinations of 4 channels. Upgrading Legacy Peripheral Designs to USB
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Field Upgradable USB Products Cellular and cordless phone USB data transfer cables and interfaces. Interfacing MCU / PLD / FPGA based designs to USB PDA to USB data transfer USB Smart Card Readers USB Instrumentation USB Industrial Control USB MP3 Player Interface USB FLASH Card Reader / Writers Set Top Box PC - USB interface USB Digital Camera Interface USB Bar Code Readers
1.1
Driver Support
The FT4232H requires USB drivers (listed below) , available free from http://www.ftdichip.com, which are used to make the FT4232H appear as a virtual COM port (VCP). This allows the user to communicate with the USB interface via a standard PC serial emulation port (for example TTY). Another FTDI USB driver, the D2XX driver, can also be used with application software to directly access the FT4232H through a DLL.
Royalty free VIRTUAL COM PORT (VCP) DRIVERS for...
* * * * * * Windows 2000, Server 2003, Server 2008 Windows XP and XP 64-bit Windows Vista and Vista 64-bit Windows XP Embedded Windows CE 4.2, 5.0, 5.2 and 6.0 Mac OS-X
Royalty free D2XX Direct Drivers (USB Drivers + DLL S/W Interface)
* * * * * * Windows 2000, Server 2003, Server 2008 Windows XP and XP 64-bit Windows Vista and Vista 64-bit Windows XP Embedded Windows CE 4.2, 5.0, 5.2 and 6.0 Linux (2.4 or later) and Linux x86_64
For driver installation, please refer to the application note:
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AN_106, "Advanced Driver Options".
The following additional installation guides and technical notes are also available:
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AN_103, "FTDI Drivers Installation Guide for VISTA". AN_104, "FTDI Drivers Installation Guide for WindowsXP". AN_109, "Programming Guide for High Speed FTCI2C DLL ". AN_110, "Programming Guide for High Speed FTCJTAG DLL ". AN_111, "Programming Guide for High Speed FTCSPI DLL ". AN_113, "Interfacing FT2232H Hi-Speed Devices To I2C Bus". TN_104, "Guide to Debugging Customers Failed Driver Installation".
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1.2
Part Numbers
Package
Part Number
FT4232HL-XXXX FT4232HQ-XXXX Note: Packing codes for xxxx is:
64 Pin LQFP 64 Pin QFN
- Reel: Taped and Reel (LQFP =1000 pcs per reel, QFN =4000 pcs per reel) -Tray: Tray packing, (LQFP =160 pcs per tray, QFN =260 pcs per tray)
Please refer to section 8 for all package mechanical parameters.
1.3
USB Compliant
At the time of writing this datasheet, the FT4232H (Rev B) was still to complete USB compliancy testing.
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FT4232H Block Diagram
Figure 2.1 FT4232H Block Diagram
For a description of each function please refer to Section 4.
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Table of Contents
1
1.1 1.2
Typical Applications ...................................................................... 2
Driver Support .................................................................................... 2 Part Numbers...................................................................................... 3
Note: Packing codes for xxxx is: ................................................................. 3 1.3 USB Compliant .................................................................................... 3
2 3
3.1 3.2 3.3 3.4
FT4232H Block Diagram ............................................................... 4 Device Pin Out and Signal Description .......................................... 7
64-Pin LQFP and 64-Pin QFN Package Schematic Symbol ................... 7 FT4232H Pin Descriptions ................................................................... 8 Common Pins .................................................................................... 10 Configured Pins ................................................................................ 12
FT4232H pins used as an asynchronous serial interface .................................................. 12 FT4232H pins used in a Synchronous or Asynchronous Bit-Bang Interface ........................ 13 FT4232H pins used in an MPSSE .................................................................................. 14
3.4.1 3.4.2 3.4.3
4
4.1 4.2 4.3
Function Description................................................................... 15
Key Features ..................................................................................... 15 Functional Block Descriptions ........................................................... 15 FT232 UART Interface Mode Description........................................... 17
RS232 Configuration .................................................................................................. 17 RS422 Configuration .................................................................................................. 18 RS485 Configuration .................................................................................................. 19
4.3.1 4.3.2 4.3.3
4.4 4.5 4.6
MPSSE Interface Mode Description. .................................................. 20 Synchronous and Asynchronous Bit-Bang Interface Mode Description 21 FT4232H Mode Selection................................................................... 23
5
5.1 5.2
Devices Characteristics and Ratings ........................................... 24
Absolute Maximum Ratings............................................................... 24 DC Characteristics............................................................................. 25
6
6.1 6.2 6.3 6.4
FT4232H Configurations ............................................................. 28
USB Bus Powered Configuration ...................................................... 28 USB Self Powered Configuration ....................................................... 30 Oscillator Configuration .................................................................... 32 4 Channel Transmit and Receiver LED Indication Example ............... 33
7 8
8.1
EEPROM Configuration................................................................ 34 Package Parameters ................................................................... 35
FT4232HQ, QFN-64 Package Dimensions .......................................... 36
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8.2 8.3
FT4232HL, LQFP-64 Package Dimensions ......................................... 37 Solder Reflow Profile ........................................................................ 39
9
Contact Information ................................................................... 41
Appendix A - List of Figures and Tables ..................................................... 42 List of Tables ............................................................................................. 42 Appendix B - Revision History.................................................................... 43
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Device Pin Out and Signal Description
The 64-pin LQFP and 64-pin QFN have the same pin numbering for specific functions. This pin numbering is illustrated in the schematic symbol shown in Figure 3.1.
3.1
64-Pin LQFP and 64-Pin QFN Package Schematic Symbol
50
VREGIN
49 VREGOUT
ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7
16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
7 8 6 14
DM DP REF RESET#
FT4232H
63 62 61 2
EECS EECLK EEDATA OSCI
3 13
DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7 PWREN# SUSPEND#
OSCO TEST
Figure 3.1 FT4232H Schematic Symbol
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3.2
FT4232H Pin Descriptions
This section describes the operation of the FT4232H pins. Both the LQFP and the QFN packages have the same function on each pin. The function of many pins is determined by the configuration of the FT4232H. The following table details the function of each pin dependent on the configuration of the interface. Each of the functions are described in Table 3.1 (Note: The convention used throughout this document for active low signals is the signal name followed by a #)
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FT4232H
Pins
Pin # 16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 Pin Name ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 ASYNC Serial (RS232) TXD RXD RTS# CTS# DTR# DSR# DCD# RI#/ TXDEN* TXD RXD RTS# CTS# DTR# DSR# DCD# RI#/ TXDEN*
Pin functions (depend on configuration)
ASYNC BitSYNC Bitbang bang Channel A D0 D1 D2 D3 D4 D5 D6 D7 Channel B D0 D1 D2 D3 D4 D5 D6 D7 Channel C D0 D1 D2 D3 D4 D5 D6 D7 TCK/SK TDI/DO TDO/DI TMS/CS GPIOL0 GPIOL1 GPIOL2 GPIOL3 D0 D1 D2 D3 D4 D5 D6 D7 MPSSE TCK/SK TDI/DO TDO/DI TMS/CS GPIOL0 GPIOL1 GPIOL2 GPIOL3
38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7 DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7 PWREN# SUSPEND#
TXD RXD RTS# CTS# DTR# DSR# DCD# RI#/ TXDEN* TXD RXD RTS# CTS# DTR# DSR# DCD# RI#/ TXDEN* PWREN# SUSPEND#
D0 D1 D2 D3 D4 D5 D6 D7 Channel D D0 D1 D2 D3 D4 D5 D6 D7 PWREN# SUSPEND#
D0 D1 D2 D3 D4 D5 D6 D7 D0 D1 D2 D3 D4 D5 D6 D7 PWREN# SUSPEND#
RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface RS232 or Bit-Bang interface PWREN# SUSPEND#
Configuration memory interface 63 62 61 EECS EECLK EEDATA
Table 3.1 FT4232H Pin Configurations * RI#/ or TXDEN is selectable in the EEPROM. Default is RI#.
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3.3
Common Pins
The operation of the following FT4232H pins are the same regardless of the configured mode:Pin No. Name Type POWER Input POWER Input POWER Input POWER Input POWER Input POWER Output POWER Input POWER Input Description
12,37,64
VCORE
+1.8V input. Core supply voltage input +3.3V input. I/O interface power supply input. Failure to connect all VCCIO pins will result in failure of the device.
20,31,42,56
VCCIO
9
VPLL
+3.3V input. Internal PHY PLL power supply input. It is recommended that this supply is filtered using an LC filter. +3.3V Input. Internal USB PHY power supply input. Note that this cannot be connected directly to the USB supply. A +3.3V regulator must be used. It is recommended that this supply is filtered using an LC filter. +3.3V Input. Integrated 1.8V voltage regulator input.
4
VPHY
50
VREGIN
49
VREGOUT
+1.8V Output. Integrated voltage regulator output. Connect to VCORE with 3.3uF filter capacitor.
10 1,5,11,15, 25,35,47,51
AGND
0V Analog ground.
GND
0V Ground input.
Table 3.2 Power and Ground
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2 3 6 7 8 13 14
OSCI OSCO REF DM DP TEST RESET#
Oscillator input. Oscillator output. Current reference - connect via a 12K Ohm resistor @ 1% to GND. USB Data Signal Minus. USB Data Signal Plus. IC test pin - for normal operation should be connected to GND. Reset input (active low). Active low power-enable output. PWREN# = 0: Normal operation.
60
PWREN#
OUTPUT
PWREN# =1 : USB SUSPEND mode or device has not been configured. This can be used by external circuitry to power down logic when device is in USB suspend or has not been configured.
36
SUSPEND#
OUTPUT
Active low when USB is in suspend mode.
Table 3.3 Common Function pins
Pin No.
Name
Type
Description
63 62
EECS EECLK EEDATA
I/O OUTPUT I/O
EEPROM - Chip Select. Tri-State during device reset. Clock signal to EEPROM. Tri-State during device reset. When not in reset, this outputs the EEPROM clock. EEPROM - Data I/O Connect directly to Data-In of the EEPROM and to Data-Out of the EEPROM via a 2.2K resistor. Also, pull Data-Out of the EEPROM to VCC via a 10K resistor for correct operation. Tri-State during device reset.
61
Table 3.4 EEPROM Interface Group
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3.4
Configured Pins
The following sections describe the function of the configurable pins referred to in Table 3.1 which is determined by how the FT4232H is configured.
3.4.1
FT4232H pins used as an asynchronous serial interface
The FT4232H any of the 4 channels can be configured as an asynchronous serial UART interface (RS232/422/485). When configured in this mode, the pins used and the descriptions of the signals are shown in Table 3.5. Channel A Pin No. Channel B Pin No. Channel C Pin No. Channel D Pin No.
Name
Type
RS232 Configuration Description
16 17 18 19 21 22 23
26 27 28 29 30 32 33
38 39 40 41 43 44 45
48 52 53 54 55 57 58
TXD RXD RTS# CTS# DTR# DSR# DCD#
OUTPUT INPUT OUTPUT INPUT OUTPUT INPUT INPUT
TXD = transmitter output RXD = receiver input RTS# = Ready To send handshake output CTS# = Clear To Send handshake input DTR# = Data Transmit Ready modem signaling line DSR# = Data Set Ready modem signaling line DCD# = Data Carrier Detect modem signaling line RI# = Ring Indicator Control Input. When the Remote Wake up option is enabled in the EEPROM, taking RI# low can be used to resume the PC USB Host controller from suspend. TXDEN = (TTL level). For use with RS485 level converters.
24
34
46
59
RI#/ TXDEN
INPUT/OUTPUT
Table 3.5 Channel A,B,C and Channel D Asynchronous Serial Interface Configured Pin Descriptions
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3.4.2
FT4232H pins used in a Synchronous or Asynchronous Bit-Bang Interface
The FT4232H channel A,B,C or channel D can be configured as a bit-bang interface. There are two types of bit-bang modes: synchronous and asynchronous. When configured in any bit-bang mode (synchronous or asynchronous), the pins used and the descriptions of the signals are shown in Table 3.6 Channel Number Pin Nos. Name Type Synchronous or Asynchronous Bit-Bang Configuration Description
A
24,23,22,21, 19,18,17,16
ADBUS[7:0] I/O
Channel A, D7 to D0 bidirectional bit-bang data
B
34,33,32,30, 29,28,27,26
BDBUS[7:0] I/O
Channel B, D7 to D0 bidirectional bit-bang data
C
46,45,44,43, 41,40,39,38
CDBUS[7:0] I/O
Channel C, D7 to D0 bidirectional bit-bang data
D
59,58,57,55 54,53,52,48
DDBUS[7:0] I/O
Channel D, D7 to D0 bidirectional bit-bang data
Table 3.6 Channel A,B,C and Channel D Synchronous or Asynchronous Bit-Bang Configured Pin Descriptions
For a functional description of this mode, please refer to section 4.5 Synchronous and Asynchronous BitBang Interface Mode Description.
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3.4.3
FT4232H pins used in an MPSSE
The FT4232H channel A and channel B each have a Multi-Protocol Synchronous Serial Engine (MPSSE). Each MPSSE can be independently configured to a number of industry standard serial interface protocols such as JTAG, I2C or SPI, or it can be used to implement a proprietary bus protocol. For example, it is possible to use one of the FT4232H's channels (e.g. channel A) to connect to an SRAM configurable FPGA such as supplied by Altera or Xilinx. The FPGA device would normally be un-configured (i.e. have no defined function) at power-up. Application software on the PC could use the MPSSE to download configuration data to the FPGA over USB. This data would define the hardware function on power up. The other MPSSE channel (e.g. channel B) would be available for another serial interface function while channel C and channel D can be configured as UART or bit-bang mode. Alternatively each MPSSE can be used to control a number of GPIO pins. When configured in this mode, the pins used and the descriptions of the signals are shown in Table 3.7 Channel A Pin No. Channel B Pin No.
Name
Type
MPSSE Configuration Description Clock Signal Output. For example:
16
26
TCK/SK
OUTPUT
JTAG - TCK, Test interface clock SPI - SK, Serial Clock Serial Data Output. For example:
17
27
TDI/DO
OUTPUT
JTAG - TDI, Test Data Input SPI - DO, serial data output Serial Data Input. For example:
18
28
TDO/DI
INPUT
JTAG - TDO, Test Data output SPI - DI, Serial Data Input Output Signal Select. For example:
19
29
TMS/CS
OUTPUT
JTAG - TMS, Test Mode Select SPI - CS, Serial Chip Select
21 22 23 24
30 32 33 34
GPIOL0 GPIOL1 GPIOL2 GPIOL3
I/O I/O I/O I/O
General Purpose input/output General Purpose input/output General Purpose input/output General Purpose input/output
Table 3.7 Channel A and Channel B MPSSE Configured Pin Descriptions
For a functional description of this mode, please refer to section 4.4. When either Channel A or Channel B or both channels are used in MPSSE mode, Channel C and Channel D can be configured as asynchronous serial interface (RS232/422/485) or Bit-Bang mode or a combination of both.
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4
Function Description
The FT4232H is FTDI's 5th generation of USB devices. The FT4232H is a USB 2.0 High Speed (480Mb/s) to UART/MPSSE ICs. It has the capability of being configured in a variety of industry standard serial interfaces. The FT4232H has four independent configurable interfaces. Two of these interfaces can be configured as UART, JTAG, SPI, I2C or bit-bang mode, using an MPSSE, with independent baud rate generators. The remaining two interfaces can be configured as UART or bit-bang.
4.1
Key Features
USB High Speed to Quad Interface. The FT4232H is a USB 2.0 High Speed (480Mbits/s) to quad flexible/configurable serial interfaces. Functional Integration. The FT4232H integrates a USB protocol engine which controls the physical Universal Transceiver Macrocell Interface (UTMI) and handles all aspects of the USB 2.0 High Speed interface. The FT4232H includes an integrated +1.8V Low Drop-Out (LDO) regulator and 12MHz to 480MHz PLL. It also includes 2kbytes Tx and Rx data buffers per channel. The FT4232H effectively integrates the entire USB protocol on a chip. MPSSE.Multi-Purpose Synchronous Serial Engines (MPSSE), capable of speeds up to 30 Mbits/s, provides flexible synchronous interface configurations. Data Transfer rate. The FT4232H supports a data transfer rate up to 12 Mbit/s when configured as an RS232/RS422/RS485 UART interface. Latency Timer. This is really a feature of the driver and is used to as a timeout to flush short packets of data back to the PC. The default is 16ms, but it can be altered between 0ms and 256ms. At 0ms latency you get a packet transfer on every high speed microframe.
4.2
Functional Block Descriptions
Quad Multi-Purpose UART/MPSSE Controllers. The FT4232H has four independent UART/MPSSE Controllers. These blocks control the UART data or control the Bit-Bang mode if selected by the SETUP command. The blocks used on channel A and channel B also contain a MPSSE (Multi Protocol Synchronous Serial Engine) in each of them which can be used independently of each other and the remaining UART channels. Using this it can be configured under software command to have 1 MPSSE + 3 UARTS (each UART can be set to Bit Bang mode to gain extra I/O if required) or 2 MPSSE + 2 UARTS. USB Protocol Engine and FIFO control. The USB Protocol Engine controls and manages the interface between the UTMI PHY and the FIFOs of the chip. It also handles power management and the USB protocol specification. Dual Port FIFO TX Buffer (2Kbytes per channel). Data from the Host PC is stored in these buffers to be used by the Multi-purpose UART/FIFO controllers. This is controlled by the USB Protocol Engine and FIFO control block. Dual Port FIFO RX Buffer (2Kbytes per channel). Data from the Multi-purpose UART/FIFO controllers is stored in these blocks to be sent back to the Host PC when requested. This is controlled by the USB Protocol Engine and FIFO control block. RESET Generator - The integrated Reset Generator Cell provides a reliable power-on reset to the device internal circuitry at power up. The RESET# input pin allows an external device to reset the FT4232H. RESET# should be tied to VCCIO (+3.3v) if not being used. Independent Baud Rate Generators - The Baud Rate Generators provides a x16 or a x10 clock input to the UART's from a 120MHz reference clock and consists of a 14 bit pre-scaler and 4 register bits which provide fine tuning of the baud rate (used to divide by a number plus a fraction). This determines the Baud Rate of the UART which is programmable from 183 baud to 12 million baud. See FTDI application note AN232B-05 on the FTDI website (www.ftdichip.com) for more details.
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+1.8V LDO Regulator. The +1.8V LDO regulator generates the +1.8 volts for the core and the USB transceiver cell. Its input (VREGIN) must be connected to a +3.3V external power source. It is also recommended to add an external filtering capacitor to the VREGIN. There is no direct connection from the +1.8V output (VREGOUT) and the internal functions of the FT4232H. The PCB must be routed to connect VREGOUT to the pins that require the +1.8V including VREGIN. UTMI PHY. The Universal Transceiver Macrocell Interface (UTMI) physical interface cell. This block handles the Full speed / High Speed SERDES (serialise - deserialise) function for the USB TX/RX data. It also provides the clocks for the rest of the chip. A 12 MHz crystal should be connected to the OSCI and OSCO pins. A 12K Ohm resistor should be connected between REF and GND on the PCB. The UTMI PHY functions include: * * * * * * Supports 480 Mbit/s "High Speed" (HS)/ 12 Mbit/s "Full Speed" (FS), FS Only and "Low Speed" (LS). SYNC/EOP generation and checking. Data and clock recovery from serial stream on the USB. Bit-stuffing/unstuffing; bit stuff error detection. Manages USB Resume, Wake Up and Suspend functions. Single parallel data clock output with on-chip PLL to generate higher speed serial data clocks.
EEPROM Interface. When used without an external EEPROM the FT4232H defaults to a quad USB to an asynchronous serial port device. Adding an external 93C46 (93C56 or 93C66) EEPROM allows each of the chip's channels to be independently configured as a serial UART (RS232 mode), bit-bang mode or fast serial (opto isolation). The external EEPROM can also be used to customise the USB VID, PID, Serial Number, Product Description Strings and Power Descriptor value of the FT4232H for OEM applications. Other parameters controlled by the EEPROM include Remote Wake Up, Soft Pull Down on Power-Off and I/O pin drive strength. The EEPROM must be a 16 bit wide configuration such as a Microchip 93LC46B or equivalent capable of a 1Mbit/s clock rate at VCC = +3.00V to 3.6V. The EEPROM is programmable in-circuit over USB using a utility program called MPROG available from FTDI's web site (www.ftdichip.com). This allows a blank part to be soldered onto the PCB and programmed as part of the manufacturing and test process. If no EEPROM is connected (or the EEPROM is blank), the FT4232H will default to serial ports. The device uses its built-in default VID (0403), PID (6011) Product Description and Power Descriptor Value. In this case, the device will not have a serial number as part of the USB descriptor.
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4.3
FT232 UART Interface Mode Description
The FT4232H can be configured in similar UART modes as the FTDI FT232 devices (an asynchronous serial interface). The following examples illustrate how to configure the FT4232H with an RS232, RS422 or RS485 interfaces. The FT4232 can be configured as a mixture of these interfaces.
4.3.1
RS232 Configuration
Figure 4.1 illustrates how the FT4232H channel A can be configured with an RS232 UART interface. This can be repeated for channels B, C and D to provide a quad RS232, but has been omitted for clarity.
Figure 4.1 RS232 Configuration
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
4.3.2
RS422 Configuration
Figure 4.2 illustrates how the FT4232H can be configured as a dual RS422 interface. The FT4232H can have all 4 channels connected as RS422, but only channel A and channel C are shown for clarity.
FT4232H
60 PWREN# SUSPEND# TXD RXD RTS# CTS# DTR# DSR# DCD# RI# 36
5 D 4
VCC 14 SP491 10 9 11
DB9-M RS422 Channel A
TXDM_A TXDP_A RXDP_A 120R RXDM_A
16 17 18 19 21 22 23 24
3 2 R 6 7 VCC 14 SP491 4 10 5 3 11 2 R 6 7 VCC 14 SP491 4 10 5 12 120R D 9 12
GND
RTSM_A RTSP_A CTSP_A
CTSM_A
DB9-M RS422 Channel C
TXDM_C TXDP_C RXDP_C 120R RXDM_C
38 TXD 39 RXD 40 RTS# 41 CTS# 43 DTR# 44 DSR# 45 DCD# 46 RI#
5 3 4 6 2 3
D
9 11 R 7 VCC 14 SP491 10 12
GND
RTSM_C RTSP_C CTSP_C 120R CTSM_C
D
9 11
2
R 6 7
12
Figure 4.2 Dual RS422 Configuration
In this case both channel A and channel C are configured as UART operating at TTL levels. The Sipex SP491 is used as a level converter to convert the TTL level signals from the FT4232H to RS422 levels. The PWREN# signal is used to power down the level shifters such that they operate in a low quiescent current when the USB interface is in suspend mode.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
4.3.3
RS485 Configuration
Figure 4.3 illustrates how the FT4232H can be configured as a dual RS485 interface. The FT4232H can have all 4 channels connected as RS485, but only channel A and channel C are shown for clarity.
FT4232H
PW REN# 60 8 3 7 TXD RXD RTS# CTS# DTR# DSR# DCD# 16 17 18 19 21 L IN K 22 23 4 2 1 R 5 120R D 6 DPA GND D M _A VCC SP481
D B 9 -M R S485 C hannel A
TXDEN
24
D B 9 -M R S485 C hannel C
8 3 7 38 4 2 1 R 5 120R 43 D M _B DP_B GND VCC SP481
TXD 39 RXD 40 RTS# 41 CTS# DTR# 44 DSR# 45 DCD#
D 6
L IN K
TXDEN
46
Figure 4.3 Dual RS485 Configuration
In this case both channel A and channel C are configured as RS485 operating at TTL levels. This example uses two Sipex SP491 devices but there are similar parts available from Maxim and Analog Devices amongst others. The SP491 is a RS485 device in a compact 8 pin SOP package. It has separate enables on both the transmitter and receiver. With RS485, the transmitter is only enabled when a character is being transmitted from the UART. The TXDEN pins on the FT4232H are provided for exactly that purpose, and so the transmitter enables are wired to the TXDEN's. The receiver enable is active low, so it is wired to the PWREN# pin to disable the receiver when in USB suspend mode. RS485 is a multi-drop network - i.e. many devices can communicate with each other over a single two wire cable connection. The RS485 cable requires to be terminated at each end of the cable. Links are provided to allow the cable to be terminated if the device is physically positioned at either end of the cable. In this example the data transmitted by the FT4232H is also received by the device that is transmitting. This is a common feature of RS485 and requires the application software to remove the transmitted data from the received data stream. With the FT4232H it is possible to do this entirely in hardware - simply modify the schematic so that RXD of the FT4232H is the logical OR of the SP481 receiver output with TXDEN using an HC32 or similar logic gate.
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4.4
MPSSE Interface Mode Description.
MPSSE Mode is designed to allow the FT4232H to interface efficiently with synchronous serial protocols such as JTAG, I2C and SPI Bus. It can also be used to program SRAM based FPGA's over USB. The MPSSE interface is designed to be flexible so that it can be configured to allow any synchronous serial protocol (industry standard or proprietary) to be implemented using the FT4232H. MPSSE is only available on channel A and channel B. MPSSE is fully configurable, and is programmed by sending commands down the data stream. These can be sent individually or more efficiently in packets. MPSSE is capable of a maximum sustained data rate of 30 Mbits/s. When a channel is configured in MPSSE mode, the IO timing and signals used are shown in Figure 4.4 and
Table 4.1. These show timings for CLKOUT=30MHz. CLKOUT can be divided internally to be provide a
slower clock.
Figure 4.4 MPSSE Signal Waveforms
NAME t1 t2 t3 t4 t5 t6
MIN 15 15 1 0 11
NOM 33.33 16.67 16.67
MAX
7.15
Units ns ns ns ns ns
COMMENT CLKOUT period CLKOUT high period CLKOUT low period CLKOUT to TDI/DO delay TDO/DI hold time TDO/DI setup time
Table 4.1 MPSSE Signal Timings
MPSSE mode is enabled using Set Bit Bang Mode driver command. A hex value of 2 will enable it, and a hex value of 0 will reset the device. See application note AN2232L-02, "Bit Mode Functions for the FT2232D" for more details and examples. The MPSSE command set is fully described in application note AN_108 - "Command Processor For MPSSE and MCU Host Bus Emulation Modes". The following additional application notes are available for configuring the MPSSE :
* * *
AN_109 - "Programming Guide for High Speed FTCI2C DLL" AN_110 - "Programming Guide for High Speed FTCJTAG DLL" AN_111 - "Programming Guide for High Speed FTCSPI DLL"
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
4.5
Synchronous and Asynchronous Bit-Bang Interface Mode Description
The FT4232H channel A,B,C or channel D can be configured as a bit-bang interface. There are two types of bit-bang modes: synchronous and asynchronous.
Asynchronous Bit-Bang Mode
Asynchronous Bit-Bang mode is the same as BM-style Bit-Bang mode. On any channel configured in asynchronous bit-bang mode. data written to the device in the normal manner will be self clocked onto the parallel I/O data pins (those which have been configured as outputs). Each I/O pin can be independently set as an input or an output. The rate that the data is clocked out at is controlled by the baud rate generator. For the data to change there has to be new data written, and the baud rate clock has to tick. If no new data is written to the channel, the pins will hold the last value written.
Synchronous Bit-Bang Mode
The synchronous Bit-Bang mode will only update the output parallel I/O port pins whenever data is sent from the USB interface to the parallel interface. When this is done, data is read from the USB Rx FIFO buffer and written out on the pins. Data can only be received from the parallel pins (to the USB Tx FIFO interface) when the parallel interface has been written to. With Synchronous Bit-Bang mode, data will only be sent out by the FT4232H if there is space in the FT4232H USB TXFIFO for data to be read from the parallel interface pins. This Synchronous Bit-Bang mode will read the data bus parallel I/O pins first, before it transmits data from the USB RxFIFO. It is therefore 1 byte behind the output, and so to read the inputs for the byte that you have just sent, another byte must be sent. For example :(1) Pins start at 0xFF Send 0x55,0xAA Pins go to 0x55 and then to 0xAA Data read = 0xFF,0x55 (2) Pins start at 0xFF Send 0x55,0xAA,0xAA (repeat the last byte sent) Pins go to 0x55 and then to 0xAA Data read = 0xFF,0x55,0xAA Synchronous Bit-Bang Mode differs from Asynchronous Bit-Bang mode in that the device parallel output is only read when the parallel output is written to by the USB interface. This makes it easier for the controlling program to measure the response to a USB output stimulus as the data returned to the USB interface is synchronous to the output data. Asynchronous Bit-Bang mode is enabled using Set Bit Bang Mode driver command. A hex value of 1 will enable Asynchronous Bit-Bang mode. Synchronous Bit-Bang mode is enabled using Set Bit Bang Mode driver command. A hex value of 4 will enable Synchronous Bit-Bang mode. See application note AN2232-02, "Bit Mode Functions for the FT2232" for more details and examples of using the bit-bang modes. An example of the synchronous bi-bang mode timing is shown in Figure 4.5 and Table 4.2.
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Figure 4.5 Synchronous Bit-Bang Mode Timing Interface Example
It should be noted that the FT4232H does not output the WRSTB# or RDSTB# signals when configured in bit-bang mode. Figure 4.5. and Table 4.2 show these signals for illustration purposes only.
NAME t1 t2 t3 t4 t5 t6
Description
Current pin state is read RDSTB# is set inactive and data on the paralle I/O pins is read and sent to the USB host. RDSTB# is set active again, and any pins that are output will change to their new data 1 clock cycle to allow for data setup WRSTB# goes active. This indicates that the host PC has written new data to the I/O parallel data pins WRSTB# goes inactive
Table 4.2 Synchronous Bit-Bang Mode Timing Interface Example Timings
WRSTB# = this output indicates when new data has been written to the I/O pins from the Host PC (via the
USB interface).
RDSTB# = this output rising edge indicates when data has been read from the I/O pins and sent to the Host PC (via the USB interface).
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4.6
FT4232H Mode Selection
The 4 channels of the FT4232H reset to 4 asynchronous serial UART interfaces. Following a reset, the required mode can be configured by sending the FT_SetBitMode command (refer to D2XX_Programmers_Guide) to the USB driver software. The EEPROM contents have no effect on the selected mode with the exception of selecting the TXDEN for RS485 mode when asynchronous serial interface has been selected in software. If the device is reset, then the 4 channels must be reconfigured into the required mode. Note that the mode of each of the 4 channels is independent of the other channels. The MPSSE can be configured directly using the D2XX commands. The D2XX_Programmers_Guide is available from the FTDI website at http://www.ftdichip.com/Documents/ProgramGuides/D2XX_Programmer's_Guide(FT_000071).pdf
Also the MPSSE command set is fully described in application note AN_108 - "Command Processor For
MPSSE and MCU Host Bus Emulation Modes".
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5 5.1
Devices Characteristics and Ratings Absolute Maximum Ratings
The absolute maximum ratings for the FT4232H devices are as follows. These are in accordance with the Absolute Maximum Rating System (IEC 60134). Exceeding these values may cause permanent damage to the device.
Parameter Value Unit
Storage Temperature Floor Life (Out of Bag) At Factory Ambient (30C / 60% Relative Humidity) Ambient Operating Temperature (Power Applied) MTTF FT4232HL MTTF FT4232HQ VCORE Supply Voltage VCCIO IO Voltage DC Input Voltage - USBDP and USBDM DC Input Voltage - High Impedance Bi-directionals (powered from VCCIO) DC Input Voltage - All Other Inputs DC Output Current - Outputs
Table 5.1 Absolute Maximum Ratings
-65C to 150C 168 Hours (IPC/JEDEC J-STD-033A MSL Level 3 Compliant)* -40C to 85C TBD TBD -0.3 to +2.0 -0.3 to +4.0 -0.5 to +3.63
Degrees C
Hours
Degrees C hours hours V V V
-0.3 to +5.8
V
-0.5 to + (VCCIO +0.5) 16
V mA
* If devices are stored out of the packaging beyond this time limit the devices should be baked before use. The devices should be ramped up to a temperature of +125C and baked for up to 17 hours.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
5.2
DC Characteristics
DC Characteristics (Ambient Temperature = -40C to +85C)
Parameter Description Minimum Typical Maximum Units Conditions
VCORE
VCC Core Operating Supply Voltage VCCIO Operating Supply Voltage VREGIN Voltage regulator Input Voltage regulator Output Regulator Current Core Operating Supply Current
1.62
1.80
1.98
V Cells are 5V tolerant
VCCIO*
2.97
3.30
3.63
V
VREGIN
3.00
3.30
3.60
V
VREGOUT Ireg
1.71
1.80
1.89 150
V mA VREGIN +3.3V VCORE = +1.8V Normal Operation VCORE = +1.8V
Icc1
---
70
---
mA
Icc1r
Core Reset Supply Current
---
5
---
mA
Device in reset state. VCORE = +1.8V USB Suspend
Icc1s
Core Suspend Supply Current
500
A
Table 5.2 Operating Voltage and Current *NOTE: Failure to connect all VCCIO pins will result in failure of the device.
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The I/O pins are +3.3v cells, which are +5V tolerant (except the USB PHY pins).
Parameter Description Minimum Typical Maximum Units Conditions
V 2.40
Ioh = +/-2mA I/O Drive strength* = 4mA
3.14
3.20
Voh Output Voltage High
V
I/O Drive strength* = 8mA I/O Drive strength* = 12mA I/O Drive strength* = 16mA Iol = +/-2mA I/O Drive strength* = 4mA
3.22
V
3.22
V
V
0.18
0.40
0.12
Vol Output Voltage Low
V
I/O Drive strength* = 8mA I/O Drive strength* = 12mA I/O Drive strength* = 16mA LVTTL
0.08
V
0.07
Input low Switching Threshold Input High Switching Threshold Switching Threshold Schmitt trigger negative going threshold voltage Schmitt trigger positive going threshold voltage
0.80
V
Vil
-
0.80
V
Vih Vt Vt-
2.0
-
V V
-
LVTTL LVTTL
1.50
1.10
V
Vt+
1.60 40 40 15 75 75 45 +/-10
2.0
V K K Vin = 0 Vin =VCCIO Vin = 0 Vin = 5.5V or 0
Rpu Rpd Iin Ioz
Input pull-up resistance Input pull-down resistance
Input Leakage Current
190 190 85
A A
Tri-state output leakage current
Table 5.3 I/O Pin Characteristics (except USB PHY pins)
*The I/O drive strength and slow slew-rate are configurable in the EEPROM.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78 DC Characteristics (Ambient Temperature = -40C to +85C)
Parameter Description Minimum Typical Maximum Units Conditions
VPHY, VPLL
Iccphy
PHY Operating Supply Voltage PHY Operating Supply Current PHY Operating Supply Current
3.0
3.3
3.6
V
3.3V I/O High-speed operation at 480 MHz USB Suspend
---
30
60
mA
Iccphy (susp)
---
10
50
A
Table 5.4 PHY Operating Voltage and Current
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
Voh Vol Vil
Output Voltage High Output Voltage Low Input low Switching Threshold Input High Switching Threshold
VCORE0.2 0.2
0.8
V V V
Vih
2.0
-
V
Table 5.5 PHY I/O Pin Characteristics
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6
FT4232H Configurations
The following sections illustrate possible USB power configurations for the FT4232H. All USB power configurations illustrated apply to both package options for the FT4232H device
6.1
USB Bus Powered Configuration
Bus Powered Application example 1: Bus powered configuration
+3.3V +3.3V 100nF 100nF 100nF 4.7uF 4.7uF 100nF 100nF GND GND GND GND GND GND GND 100nF 100nF 100nF 100nF GND GND GND +1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
GND
+1.8V
+3.3V
56 VCCIO 42 VCCIO 31 VCCIO 20 VCCIO
64 VCORE 37 VCORE 12 VCORE
LDO +3.3V Vin Vout GND
+3.3V 50 VREGIN +1.8V 100nF 3.3uF GND 49 VREGOUT
9 VPLL VPHY 4
100nF GND GND VBUS DD+ GND 1 2 3 4
GND
ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7
16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
7 8 6 +3.3V 14 1K 12K +3.3V GND
DM DP REF RESET#
0?
GND
10K
10K
10K EECLK EEDATA 63 62 61 2 EECS EECLK EEDATA OSCI
+3.3V 1 6 3 2 5 8
CS VCC ORG 4 D Q 93C46 SCL 7 DU GND
1 2.2K
3 12MHz
3 13 27pF GND
DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7 GND GND GND GND GND GND GND GND PWREN# SUSPEND#
OSCO TEST
AGND 10
51 47 35 25 15 11 5 1
27pF GND GND
GND
Figure 6.1 Bus Powered Configuration Example 1
Figure 6.1 illustrates the FT4232H in a typical USB bus powered design configuration. A USB bus powered device gets its power from the USB bus. In this application, the FT4232H requires that the VBUS (USB +5V) is regulated down to +3.3V (using an LDO) to supply the VCCIO, VPLL, VPHY and VREGIN. VREGIN is the +3.3V input to the on chip +1.8V regulator. The output of the on chip LDO regulator (+1.8V) drives the FT4232H core supply (VCORE). This requires a minimum of a 3.3uF filter capacitor.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78 Bus Powered Application example 2: Bus powered configuration (with additional 1.8V LDO voltage regulator for VCORE)
+3.3V +3.3V LDO +1.8V Vin Vout GND 100nF GND GND LDO +3.3V Vin Vout GND 100nF GND 56 VCCIO 42 VCCIO 31 VCCIO 20 VCCIO 64 VCORE 37 VCORE 12 VCORE 9 VPLL VPHY 4 +3.3V +1.8V 4.7uF 4.7uF 100nF 100nF GND GND GND GND 100nF 100nF 100nF GND GND GND 100nF 100nF 100nF 100nF GND GND GND +1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
GND
+1.8V
+3.3V
50 VREGIN 49 VREGOUT
100nF GND GND VBUS DD+ GND 1 2 3 4
100nF GND 7 8 6 +3.3V 14 1K 12K +3.3V GND
ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7
16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
DM DP REF RESET#
0?
GND
10K
10K
10K EECLK EEDATA 63 62 61 2 EECS EECLK EEDATA OSCI
+3.3V 1 6 3 2 5 8
CS VCC ORG 4 D Q 93C46 SCL 7 DU GND
1 2.2K
3 12MHz 27pF GND
3 13
DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7 GND GND GND GND GND GND GND GND PWREN# SUSPEND#
OSCO TEST
AGND 10
51 47 35 25 15 11 5 1
27pF GND GND
GND
Figure 6.2 Bus Powered Configuration Example 2
Figure 6.3 illustrates the FT4232H in a typical USB bus powered configuration similar to Figure 6.1. The difference here is that the +1.8V for the FT4232H core (VCORE) has been regulated from the VBUS as well as the +3.3V supply to the VPLL, VPHY, VCCIO and VREGIN.
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6.2
USB Self Powered Configuration
Self Powered application example 1: Self powered configuration
+3.3V +3.3V 100nF 100nF 100nF 4.7uF GND 4.7uF GND 100nF 100nF GND GND GND GND GND 100nF 100nF 100nF 100nF GND GND GND +1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
GND
+1.8V
+3.3V
Ext. Power Supply LDO +3.3V 1 2 GND 100nF GND GND VBUS DD+ GND 1 2 3 4 4.7K
14 0? GND
56 VCCIO 42 VCCIO 31 VCCIO 20 VCCIO
64 VCORE 37 VCORE 12 VCORE
+3.3V
50 VREGIN
9 VPLL VPHY 4
Vin Vout GND
+1.8V 100nF GND
3.3uF
49 VREGOUT
GND
ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7
16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
7 8 6
DM DP REF RESET#
1K 10K +3.3V GND 10K 10K 10K EECLK EEDATA +3.3V
2 OSCI 63 62 61 EECS EECLK EEDATA
12K GND
1 6 3 2 5
CS VCC ORG D Q 93C46 SCL DU GND
8 4 7 2.2K 1 3 12MHz
3 13 OSCO TEST GND GND GND GND GND GND GND GND 51 47 35 25 15 11 5 1 AGND 10
DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7 PWREN# SUSPEND#
27pF GND GND
27pF GND GND
Figure 6.3 Self Powered Configuration Example 1
Figure 6.3 illustrates the FT4232H in a typical USB self powered configuration. A USB self powered device gets its power from its own power supply and does not draw current from the USB bus. In this example an external power supply is used. This external supply is regulated to +3.3V. Note that in this set-up, the EEPROM should be configured for self-powered operation.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78 Self Powered application example 2: Self powered configuration (with additional 1.8V LDO voltage regulator for VCORE)
+3.3V +3.3V LDO +1.8V Vin Vout GND 100nF Ext. Power Supply 1 2 GND 100nF GND GND VBUS DD+ GND 1 2 3 4 VBUS 7 8 6 4.7K 14 0? GND 10K +3.3V GND 10K 10K 10K EECLK EEDATA +3.3V 2 1 6 3 2 5 8 CS VCC ORG 4 D Q 93C46 SCL 7 DU GND OSCI 63 62 61 EECS EECLK EEDATA 12K GND 1K DM DP REF RESET# GND GND GND 100nF GND +1.8V 4.7uF 4.7uF 100nF 100nF GND GND GND GND
+1.8V +1.8V +1.8V +3.3V +3.3V +3.3V +3.3V
100nF 100nF 100nF GND GND GND
100nF 100nF 100nF 100nF GND GND GND
GND
+1.8V
+3.3V
56 VCCIO 42 VCCIO 31 VCCIO 20 VCCIO
64 VCORE 37 VCORE 12 VCORE
9 VPLL VPHY 4
LDO +3.3V Vin Vout GND
+3.3V
50 VREGIN 49 VREGOUT
100nF
ADBUS0 ADBUS1 ADBUS2 ADBUS3 ADBUS4 ADBUS5 ADBUS6 ADBUS7 BDBUS0 BDBUS1 BDBUS2 BDBUS3 BDBUS4 BDBUS5 BDBUS6 BDBUS7 CDBUS0 CDBUS1 CDBUS2 CDBUS3 CDBUS4 CDBUS5 CDBUS6 CDBUS7 DDBUS0 DDBUS1 DDBUS2 DDBUS3 DDBUS4 DDBUS5 DDBUS6 DDBUS7
16 17 18 19 21 22 23 24 26 27 28 29 30 32 33 34 38 39 40 41 43 44 45 46 48 52 53 54 55 57 58 59 60 36
1 2.2K
3 12MHz
3 13 27pF GND
OSCO TEST
GND GND GND GND GND GND GND GND 51 47 35 25 15 11 5 1
AGND 10
PWREN# SUSPEND#
27pF GND GND
GND
Figure 6.4 Self Powered Configuration Example 2
Figure 6.4 illustrates the FT4232H in a typical USB self powered configuration similar to Figure 6.3. The difference here is that the +1.8V for the FT4232H core has been regulated from the external power supply. Note that in this set-up, the EEPROM should be configured for self-powered operation.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
6.3
Oscillator Configuration
FT4232H
27pF 2 OSCI
12MHz Crystal 27pF 3 OSCO
Figure 6.5 Recommended FT4232H Crystal Oscillator Configuration.
Figure 6.5 illustrates how to connect the FT4232H with a 12MHz 0.5% crystal. In this case loading capacitors should to be added between OSCI, OSCO and GND as shown. A value of 27pF is shown as the capacitor in the example - this will be good for many crystals but it is recommended to select the loading capacitor value based on the manufacturer's recommendations wherever possible. It is recommended to use a parallel cut type crystal. It is also possible to use a 12 MHz oscillator with the FT4232H. In this case the output of the oscillator would drive OSCI, and OSCO should be left unconnected. The oscillator must have a CMOS output drive capability.
Parameter
Description
Minimum
Typical
Maximum
Units
Conditions
OSCI Vin FIn Ji
Input Voltage Input Frequency Cycle to cycle jitter
2.97
3.30 12 < 150
3.63
V MHz pS
+/- 30ppm
Table 6.1 OSCI Input characteristics
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
6.4
4 Channel Transmit and Receiver LED Indication Example
The following example illustrates how a 74HCT595 can be used to decode the EEDATA data to indicate Tx and Rx on each of the channels. The associated LED will light when the Channel is transmitting or receiving data.
Figure 6.6 Using 74HCT595 to Indicate Tx and Rx Data
In this configuration, the LEDs will flash when the EEPROM is accessed. For example during enumeration. Under normal operation, the EECS is held low to disable access to the EEPROM. In this special case, the EECLK will clock the EEDATA into the 74HCT595 shift register (with EECS low, therefore EEPROM ignores the EEDATA). Then EECS will pulse high. The rising edge of the EECS latches the data into a storage register of the 74HCT595 which drives the LEDs. Please refer to the 74HCT595 datasheet for further explanation.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
7
EEPROM Configuration
If an external EEPROM is fitted (93LC46/56/66) it can be programmed over USB using MPROG V3.4a or later. The EEPROM must be 16 bits wide and capable or working at a VCC supply of +3.0 to +3.6 volts.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
8
Package Parameters
The FT4232H is available in two different packages. The FT4232HL is the LQFP-64 option and the FT4232HQ is the QFN-64 package option. The solder reflow profile for both packages is described in Section 8.3
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
8.1
FT4232HQ, QFN-64 Package Dimensions
Notes 1. All dimensions are in mm. 2. Pin 1 ID can be combination of DOT AND/OR Chamfer. 3. Pin 1 ID is NOT connected to the internal ground of the device. It is internally connected to the bottom side central solder pad, which is 4.35 x 4.35mm. 4. Pin 1 ID can be connected to system ground, but it is not recommended using this as a ground point for the device. 5. Optional Chamfer on corner leads.
Figure 8.1 64 pin QFN Package Details
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
8.2
FT4232HL, LQFP-64 Package Dimensions
Top View
64 1 49 48
FTDI
10.000+/- 0.1 33 17 10.000+/- 0.1
D D1 64 49 E1 E
Line 1- FTDI Logo Line 2- Date Code and Revision Line 3- Wafer Lot Number Line 4- FTDI Part Number
Indicates Pin #1 (Laser Marked)
YYWW-A XXXXXXXXXXXX FT4232HL
16 32
Dimensions are body dimensions (mm)
1
48
16
33
17
e
32
1.0 12
o
+/- 1
o
b c
0.25
1 . 4 + /- 0 . 0 5
MAX
1.6 0
c1 b1
0.05 Min 0.15 Max
0.2 Min 0.6 +/- 0.15
Figure 8.2 64 pin LQFP Package Details
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
SYMBOL D D1 E E1 b c b1 c1 e
MIN 11.8 9.9 11.8 9.9 0.17 0.09 0.17 0.09
NOM 12 10 12 10 0.22
MAX 12.2 10.1 12.2 10.1 0.27 0.2
0.2
0.23 0.16
0.5 BSC
Table 8.1 64 pin LQFP Package Details - dimensions (in mm)
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
8.3
Solder Reflow Profile
Figure 8.3 64 pin LQFP and QFN Reflow Solder Profile
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
Pb Free Solder Process Profile Feature (green material) Average Ramp Up Rate (Ts to Tp) 3C / second Max.
SnPb Eutectic and Pb free (non green material) Solder Process
3C / Second Max.
Preheat - Temperature Min (Ts Min.) - Temperature Max (Ts Max.) - Time (ts Min to ts Max) 150C 200C 60 to 120 seconds 100C 150C 60 to 120 seconds
Time Maintained Above Critical Temperature TL: - Temperature (TL) - Time (tL) Peak Temperature (Tp) Time within 5C of actual Peak Temperature (tp) Ramp Down Rate Time for T= 25C to Peak Temperature, Tp 217C 60 to 150 seconds 183C 60 to 150 seconds
260C
see Table 8.3
30 to 40 seconds
20 to 40 seconds
6C / second Max. 8 minutes Max.
6C / second Max. 6 minutes Max.
Table 8.2 Reflow Profile Parameter Values
SnPb Eutectic and Pb free (non green material) Package Thickness
Volume mm3 < 350 235 +5/-0 deg C 220 +5/-0 deg C
Volume mm3 >=350 220 +5/-0 deg C 220 +5/-0 deg C
< 2.5 mm
2.5 mm
Pb Free (green material) = 260 +5/-0 deg C
Table 8.3 Package Reflow Peak Temperature
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
9
Contact Information
Head Office - Glasgow, UK Future Technology Devices International Limited Unit 1, 2 Seaward Place, Glasgow G41 1HH United Kingdom Tel: +44 (0) 141 429 2777 Fax: +44 (0) 141 429 2758 E-mail (Sales) vinculum.sales@ftdichip.com E-mail (Support) vinculum.support@ftdichip.com E-mail (General Enquiries) admin1@ftdichip.com Web Site URL http://www.ftdichip.com Web Shop URL http://www.ftdichip.com
Branch Office - Taipei, Taiwan Future Technology Devices International Limited (Taiwan) 2F, No. 516, Sec. 1, NeiHu Road Taipei 114 Taiwan , R.O.C. Tel: +886 (0) 2 8797 1330 Fax: +886 (0) 2 8751 9737 E-mail (Sales) tw.sales1@ftdichip.com tw.support1@ftdichip.com E-mail (Support) E-mail (General Enquiries) tw.admin1@ftdichip.com Web Site URL http://www.ftdichip.com
Branch Office - Hillsboro, Oregon, USA Future Technology Devices International Limited (USA) 7235 NW Evergreen Parkway, Suite 600 Hillsboro, OR 97123-5803 USA Tel: +1 (503) 547 0988 Fax: +1 (503) 547 0987 E-Mail (Sales) E-Mail (Support) Web Site URL us.sales@ftdichip.com us.admin@ftdichip.com http://www.ftdichip.com
Branch Office - Shanghai, China
Future Technology Devices International Limited (China) Room 408, 317 Xianxia Road, ChangNing District, ShangHai, China Tel: +86 (21) 62351596 Fax: +86(21) 62351595 E-Mail (Sales): cn.sales@ftdichip.com E-Mail (Support): cn.support@ftdichip.com E-Mail (General Enquiries): cn.admin1@ftdichip.com Web Site URL: http://www.ftdichip.com Distributor and Sales Representatives Please visit the Sales Network page of the FTDI Web site for the contact details of our distributor(s) and sales representative(s) in your country.
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
Appendix A - List of Figures and Tables List of Tables
Table 3.1 FT4232H Pin Configurations ....................................................................................... 9 Table 3.2 Power and Ground ........................................................................................................ 10 Table 3.3 Common Function pins .................................................................................................. 11 Table 3.4 EEPROM Interface Group ............................................................................................... 11 Table 3.5 Channel A,B,C and Channel D Asynchronous Serial Interface Configured Pin Descriptions ...... 12 Table 3.6 Channel A,B,C and Channel D Synchronous or Asynchronous Bit-Bang Configured Pin Descriptions ............................................................................................................................. 13 Table 3.7 Channel A and Channel B MPSSE Configured Pin Descriptions .................................. 14 Table 4.1 MPSSE Signal Timings ................................................................................................... 20 Table 4.2 Synchronous Bit-Bang Mode Timing Interface Example Timings .......................................... 22 Table 5.1 Absolute Maximum Ratings ............................................................................................ 24 Table 5.2 Operating Voltage and Current .............................................................................................. 25 Table 5.3 I/O Pin Characteristics (except USB PHY pins) .................................................................. 26 Table 5.4 PHY Operating Voltage and Current ................................................................................. 27 Table 5.5 PHY I/O Pin Characteristics ............................................................................................ 27 Table 6.1 OSCI Input characteristics ............................................................................................. 32 Table 8.1 64 pin LQFP Package Details - dimensions (in mm)........................................................... 38 Table 8.2 Reflow Profile Parameter Values ..................................................................................... 40 Table 8.3 Package Reflow Peak Temperature .................................................................................. 40
List of Figures
Figure 2.1 FT4232H Block Diagram ................................................................................................. 4 Figure 3.1 FT4232H Schematic Symbol ...................................................................................... 7 Figure 4.1 RS232 Configuration .................................................................................................... 17 Figure 4.2 Dual RS422 Configuration ............................................................................................. 18 Figure 4.3 Dual RS485 Configuration ............................................................................................. 19 Figure 4.4 MPSSE Signal Waveforms ............................................................................................. 20 Figure 4.5 Synchronous Bit-Bang Mode Timing Interface Example .................................................... 22 Figure 6.1 Bus Powered Configuration Example 1............................................................................ 28 Figure 6.2 Bus Powered Configuration Example 2............................................................................ 29 Figure 6.3 Self Powered Configuration Example 1 ........................................................................... 30 Figure 6.4 Self Powered Configuration Example 2 ........................................................................... 31 Figure 6.5 Recommended FT4232H Crystal Oscillator Configuration. ................................................. 32 Figure 6.6 Using 74HCT595 to Indicate Tx and Rx Data ................................................................... 33 Figure 8.1 64 pin QFN Package Details .......................................................................................... 36 Figure 8.2 64 pin LQFP Package Details ......................................................................................... 37 Figure 8.3 64 pin LQFP and QFN Reflow Solder Profile ..................................................................... 39
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Document No.: FT_000060 FT4232H QUAD HIGH SPEED USB TO MULTIPURPOSE UART/MPSSE IC Datasheet Version 2.05 Clearance No.: FTDI#78
Appendix B - Revision History
Revision History Version draft Version Preliminary Version 1.00 Version 1.10 Version 2.00 Version 2.01 Version 2.02 Version 2.03 Initial Datasheet Created Preliminary Datasheet Released Datasheet Released QFN package update Various Updates Changed description of bit-bang mode Corrected QFN tray numbers from 160 to 260 per tray Corrected signal names in Fig 2.1 Added reference to AN_109, AN_110, AN_111 and AN_113. Corrected default of RI#/ TXDEN in table 3.1 Version 2.04 Version 2.05 Added paragraph on latency timer to section 4.1 Corrected Figures 6.2, 6.3 and 6.4 - missing regulators and better way of holding self powered designs in reset if not connected to USB. Corrected Max DC inputs on "DC Input Voltage - "All Other Inputs" pins from VCORE+0.5V to VCCIO+0.5V 3rd June 2009 17th June 2009 October 2008 23rd October 2008 4th November 2008 November 2008 January 2009 February 2009 March 2009 19th May 2009
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