PTC PT8921-LQ

Preliminary
PT8921
Smart Audio Combo-Station with USB
Mini-Host & SD/MMC Host Interface Controller
DESCRIPTION
FEATURES
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.
•
•
•
•
•
•
•
•
APPLICATIONS
•
• Portable Audio Play-Station
• Car Audio Combo-Station
• Home Audio Play-Station
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
BLOCK DIAGRAM
I2S_INPUT
I2S_INPUT
DP
DM
USB 2.0
FS-PHY
Host
SIE
PWM_LP/LN
Data
FIFO
DMA
I2C
Delta
Sigma
DAC
PWM_RP/RN
PWM_OUT
I2S Stream
PCM-Data (WAV)
I2C Master
& Slave
MCU
8051
UART
Audio
MP3/WMA/AAC PCM-Data Buffer
Decoder
SFR
I2S_OUT
Power
VCC
Regulator
System Clks
PLL
12 MHz
RAM
ROM
Master Clks
PLL
Reset
GPIO
GPIO
Parallel
Flash I/F
SD/MMC
Host I/F
External Program
Flash-Memory
SD/MMC
Card
Reset
POR
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 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