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| Preliminary PT8921 Smart Audio Combo-Station with USB Mini-Host & SD/MMC Host Interface Controller DESCRIPTION The PT8921 is a cost-efficient single chip for audio mini-combo play-station application. The chip integrated the USB2.0 FS host controller, SD/MMC host controller, Sigma-Delta Audio-DAC and WAV/MP3/WMA/AAC Audio-Decoder in one chip. Only few external components needed in application circuits makes it suite for the audio play-station system with USB2.0 FS host, SD/MMC host and i-Pod audio control interfaces. The I/O interfaces are totally following the USB2.0 FS host class interface specification and SD/MMC card specification. The stand alone audio play-station and no special driver software need to install on this system by user in the recent market. The PT8921 is a truly plug and play audio play-station controller with USB2.0 FS host and SD/MMC host interfaces. There are some extended functions for the different audio sources and applications. The embedded 8-GPIO pins provide the player function key and other adjustment feature. FEATURES * * * * * * * * * * * * * * * * Built-in USB 2.0 FS Mini-Host interface. Compliant with USB Mass-storage class specification. Built-in SD/MMC Host interface. Compliant with SD/SDIO Card specification Version 2.0. Compliant with MMC Card specification Version 4.2. Support FAT12, FAT16 and FAT32 file system. Built-in 8051 base MCU with 8K ROM. Support ISP (In-System-Programmable) Interface for external program Flash-ROM. Built-in WAV/MP3 WMA/AAC Format Audio-Decoder. Support MPEG1/2/2.5 layer III audio decoding. Built-In Flat/Pop/Jazz/Classic/Rock processing function. Built-In Digital Volume control function Built-in SNR=85dB (A-Weighted) Sigma-Delta DAC, PWM Output. Built-in I2C Master/Slave Control Interface. Built-in UART Interface to communicate with i-Pod. Built-in external I2S input for optional audio input sources, and support one I2S output connecting an external advanced audio controller or stand-alone sigma-delta DAC controller. Packages: 100 Pins LQFP APPLICATIONS * Portable Audio Play-Station * Car Audio Combo-Station * Home Audio Play-Station * BLOCK DIAGRAM I2S_INPUT I2S_INPUT DP DM USB 2.0 FS-PHY Host SIE DMA Data FIFO PWM_LP/LN Delta Sigma DAC PWM_RP/RN I2S Stream PCM-Data (WAV) PWM_OUT I2C UART I2C Master & Slave MCU 8051 Power SFR Audio MP3/WMA/AAC PCM-Data Buffer Decoder I2S_OUT VCC Regulator System Clks RAM ROM GPIO Parallel Flash I/F SD/MMC Host I/F Reset POR Reset Master Clks PLL PLL 12 MHz GPIO External Program Flash-Memory SD/MMC Card Tel: 886-66296288Fax: 886-29174598 http://www.princeton.com.tw2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT8921 SYSTEM APPLICATION DIAGRAM PRE1.0 2 October 2009 PT8921 ORDER INFORMATION Valid Part Number PT8921-LQ Package Type 100-PIN LQFP Top Code PT8921-LQ PIN CONFIGURATION PRE1.0 3 October 2009 PT8921 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw PRE1.0 4 October 2009 |
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