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For Video Equipment
MN88831
PCM Audio Decoder LSI for Satellite Broadcasting Tuners (Includes Built-In Digital Filter and D/A Converter)
Overview
The MN88831 greatly streamlines set design by incorporating a satellite broadcasting PCM audio decoder, a switched capacitor D/A converter, and analog post filter to a single chip.
Pin Assignment
PO0/MTO PI2 PI1 DVDD BSTIN BSTRM SYNCF DCDI ECDO P2M NAMODE BPO 36 35 34 33 32 31 30 29 28 27 26 25
Features
Built-in digital filter using 8-fold oversampling Built-in tertiary - noise shaping D/A converter Reduced jitter noise through use of switched capacitor configuration Built-in analog post filter Built-in digital de-emphasis circuit Choice of microcomputer interfaces with selector pin: 3-wired serial interface or I2 C interface Muting function supporting following settings * Pay-per-view flag detection * Error frequency detection * Detection of control code bit-7 Built-in general-purpose microcomputer I/O port Bit stream input pin supporting 0.4 VP-P input
PO1 PO2 PO3 PO4 PC DVSS IVI IVO XI XO IIN OIN 37 38 39 40 41 42 43 44 45 46 47 48
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
NTI NLOCK NRES DVSS AVDDR VREF OUTR AVSSR BIAS AVSSL OUTL AVDDL
Applications
Satellite broadcasting tuners (BS, CS)
DVDD PO5 PO6/LIBP IFSEL TES0 TES1 CHV CWO/IFMOD CS/SA CCK/SCL CTLI/SDA DVSS
(TOP VIEW) QFP048-P-1212A
VREF
BPO
BIAS
MTI
IVO
MN88831
Block Diagram
IVI 25 24 43 Data output control Digital audio interface 44 19 16
ECDI
29 Digital filter Digital de-emphasis
Range bit detection and correction. Pay-per-view flag detection
SW2
ECDO
28
Duplex error detection and correction
(DE)
A mode data expansion Incompatible data range detection Data interpolation Muting
- noise shaper
SYNCF (LIBP) (MTO) De-interleaving
30
NLOCK
23
Frame synchronization detection Timing generator
Switched capacitor D/A converter
BSTRM Descramble control code integration and detection
31
1T Analog post filter
SW1
BSTIN Clock generator VCO
32
NRES
22
Microcomputer interface: Serial or I2C bus 34,35
Differential decoder serialization 46 7 4 9 PC XO P2M CHV IFSEL CS/SA NAMODE 41 27 26 10 11 8
Timing generator for D/A converter block (D/A converter block) 36 3 14 18
For Video Equipment
45 47 48
OUTL
OUTR
XI IIN QIN
PI1,PI2
CCK/SCL
PO6/LIBP
PO0/MTO
CTLI/SDA
PO1 to PO5
CWO/IFMOD
For Video Equipment
Absolute Maximum Ratings
Parameter Power supply voltage Input voltage Output voltage Output current Power dissipation Operating temperature Storage temperature Symbol VDD VI VO IO PD Topr Tstg Ratings - 0.3 to 7.0 - 0.3 to VDD +0.3 - 0.3 to VDD +0.3 25 480 -20 to +70 -55 to +125
MN88831
Unit V V V mA mW C C
Notes: 1. The above ratings represent the maximum values that may be applied without damaging the chip, not the limits for guaranteed operation. 2. If the chip is to be used in the presence of strong electric fields--under a CRT tube, for example--apply shielding to the package surface to ensure proper operation. 3. The power dissipation is for an ambient temperature (Ta) of 70C. 4. The voltages applied to the pins CCK/SCL, CTLI/SDA, CWO/IFMOD, PO0/MTO, PO1-PO5, and PO6/LIBP must be within the range between -0.3V and 5.5V when the power is off.
Operating Conditions
Parameter Power supply voltage for digital circuits Power supply voltage for analog circuits XI clock frequency XI clock frequency XI clock input amplitude BSTIN input amplitude Ambient temperature during operation
Notes: 1. *1 & *2:
DV SS=AV SS=0V
Symbol DVDD AVDD fXI fXI -- -- Ta
Test Conditions (*1) (*2) CHV="H" (256fs mode) CHV="L" (384fs mode) C cut input C cut input
min 4.5 4.5
typ 5.0 5.0 12.288 18.432
max 5.5 5.5
Unit V V MHz MHz
0.8 0.35 -20 0.5
3.0 +70
VP-P VP-P C
For the logic portions of the microcomputer interface, DVDD min = 4.0V. AV DD covers both AVDDL and AVDDR . AV SS covers both AVSSL and AVSSR . Analog characteristics are only guaranteed for DV DD = AVDD = 5.0V. 2. Always use low-impedance external connections for VDD and VSS . Always connect the two through a bypass capacitor of at least 0.01 F to ensure proper operation. 3. Keep the NRES pin (pin No. 22) at "L" level to prevent operation error of the CTLI/SDA pin in the I2C interface at voltages lower than the guaranteed operating power supply voltage.
MN88831
Electrical Characteristics (1) DC characteristics
AV DD=DV DD=4.5 to 5.5V, AVSS=DV SS=0V, Ta= -20 to +70C
For Video Equipment
Parameter
Symbol IDD1
Test Conditions No load, VDD=5.5V 384fs No load, VDD=5.5V 256fs
min
typ 56 56
max 80 80
Unit mA mA
Power supply current IDD2 Digital input pins 1 (*1) "H" level input voltage "L" level input voltage Digital input pins 2 (*2) "H" level input voltage "L" level input voltage Digital output pins 1 (*3) "H" level output voltage "L" level output voltage Digital output pins 2 (*4) "L" level output voltage High-impedance output leakage current Digital output pins 3 (*5) "L" level output voltage High-impedance output leakage current Analog output pins VREF pin output pin BIAS pin output pin IVI-IVO inverter Inverter input threshold voltage VTI VREF VBIAS VOL3 ILO2 VOL2 I LO VOH1 VOL1 VIH2 VIL2 VIH1 VIL1
0.7 x DVDD DVSS 0.8 x DVDD DVSS IOH1= -1mA IOL1=+1mA IOL2=+1mA VO=High-impedance state VI=0V to DV DD IOL3=+1mA VI=0V to DV DD VNRES=0V to 0.5V 0.45 x AVDD 0.5 x AVDD DVDD - 0.8
DVDD 0.3 x DVDD DVDD 0.2 x DVDD
V V V V V
0.5 0.5 10
V V A
0.5 50
V A
V V
0.5 x DVDD 0.75
V
Notes: *1: IFSEL, TES0, TES1, CHV, MTI, ECDI, PI1, PI2, IIN, QIN, CWO/IFMOD (C3, C4 only), IVI (C5 only) *2: CS/SA, CCK/SCL, NRES, CTLI/SDA (C6, C7 only) *3: NLOCK, BPO, NAMODE, P2M, ECDO, SYNCF, BSTRM, PC *4: PO0/MTO, PO1 to PO6, CWO/IFMOD, PC (C12 only) *5: CTLI/SDA
For Video Equipment
Application Circuit Example
MN88831
MN88831's built-in final differential addition filter
Switched capacitor block output
OUTL- OUTL+
MI BIAS OUT
approx. 100
OUTL
680 33F 18k
PI
4700pF BIAS + 22F
Reference voltage Bias voltage for operational amplifier
VREF
+ 22F
Structure of Analog Post Filter and Sample Analog Connections
MN88831
Package Dimensions (Unit: mm)
QFP048-P-1212A
For Video Equipment
14.20.4 12.00.3 36 25
(1.6) 12.00.3 13 1 0.8 12 0.30.1 2.00.2 14.20.4
37
24
48
2.4Max.
(1.6)
(1.1)
0.10.1
0.15 -0.05
+0.10
0 to 10 (0.55)
0.1 SEATING PLANE
Request for your special attention and precautions in using the technical information and semiconductors described in this material
(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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