PT8921_10 Datasheet, PDF (1/4 Pages) Princeton Technology Corp – Smart Audio Combo-Station with USB Mini-Host & SD/MMC Host Interface Controller

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 pins provide the player function key and
other adjustment feature. The 5 GPIO-pins support the
other control function for customer application.
APPLICATIONS
• Portable Audio Play-Station
• Car Audio Combo-Station
• Home Audio Play-Station
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 IIC Master/Slave Control Interface.
• Built-in UART Interface to communicate with i-Pod.
• Built-in external IIS input for optional audio input
sources, and support one IIS output connecting an
external advanced audio controller or stand-alone
sigma-delta DAC controller.
• Packages: 100 Pins LQFP
BLOCK DIAGRAM
DP
DM
I²C
UART
VCC
USB 2.0
FS-PHY
I²C Master
& Slave
Host
SIE
DMA
MCU
8051
Data
FIFO
SFR
Power
Regulator
RAM
ROM
System Clks
PLL
Master Clks
PLL
GPIO
Parallel
Flash I/F
I²S_INPUT
I²S_INPUT
Delta
Sigma
DAC
PWM_LP/LN
PWM_RP/RN
I²S Stream
PCM-Data (WAV)
Audio
MP3/WMA/AAC PCM-Data _Buffer
Decoder
Reset
SD/MMC
Host I/F _POR
PWM_OUT
I²S_OUT
Reset
12 MHz
GPIO External Program
Flash-Memory
SD/MMC
Card
Tel: [phone]‧Fax: [phone]‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan