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PS9702B Datasheet

  • PS9702B

  • 6Ch, 24bit, 192kHz Digital Audio Processor for Full Digital ...

  • 41頁

  • ETC

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PULSUS
PS9702B
6Ch, 24bit, 192kHz Digital Audio Processor
for Full Digital Amplifier
Introduction
The PS9702B is a highly integrated system-on-chip
solution for multi-channel AV systems. The PS9702B is 6
channel PCM to PWM modulator with sample rate
converter and pre-amplifier functions. It features six 24-bit
audio digital-to-digital converters and over-sampling digital
filters, a sample rate converter, an audio DSP that
functions as an on-chip pre-amplifier with equalizer, volume
control, bass management, and compressor functions. The
PS9702B accepts industry-standard audio data formats
with 16- to 24-bit audio data. Sampling rates of up to 192
kHz are supported.
Digital Filter and Sample-rate-converter Section
On chip Sample rate converter
On chip Digital De-emphasis filter for CD input signal
Preamplifier Section
Input mixing function
Microphone mixing function
Stereo REC output
Parametric EQ (4 band, 1dB/step) per channel
Tone control (鹵15dB, 1dB/step) per channel
Bass management function
Volume control (+24 ~ -70dB, 0.5dB/step) per channel
Dynamic range compression function
Soft and Hard Mute Functions
PCM-to-PWM modulator section
6 channel PWM Amplification output
95 dB Dynamic Range (typical)
Features
General
1 serial input port for 6Ch and 3 serial input ports
for 2Ch (or 2 serial input ports for 6Ch)
SPDIF receiver for 2Ch non-encoded PCM input
Supports 16/18/20/24 bit Input
Supports 32kHz~192kHz Input Sample Rate
I
2
C or SPI control bus
100 pin QFP Package
3.3V Single Power Supply
Application
DVD Receiver (DVD player plus 5.1ch Receiver)
Integrated A/V Receiver
HDTV sets
Car A/V Systems
DVD Add-On Cards for High-End PCs
Digital Audio Workstations
Other Multi-Channel Digital Audio Systems
Functional Block Diagram
REC_SDO
REC
Output
MBCK
MLRCK
MSDIN[0:2]
SBCK[0:2]
SLRCK[0:2]
SSDIN[0:2]
REC_PWM_L+
REC_PWM_L-
REC_PWM_R+
REC_PWM_R-
PWM_CH1+
PWM_CH1-
Input
Mux
Sample
Rate
Converter
Mixer
4-Band
EQ
Tone
Control
Bass
Manager
Volume
Control
PWM_CH2+
PWM_CH2-
MCLK
MIC_BCK
MIC_LRCK
MIC_SDIN
PWM
Modulator
PWM_CH3+
PWM_CH3-
PWM_CH4+
PWM_CH4-
PWM_CH5+
PWM_CH5-
PWM_CH6+
PWM_CH6-
Mic.
Input
Processor
Internal Clocks
Dynamic
Range
Compressor
SPI/I2C
SO/SDA
SCK/SCL
SI/I2C_AD0
/CS/I2C_AD2
EXT_MUTE
I
2
C, SPI
Interface
Internal Controls
PWM INVERT
OVERLOAD
PLL
/RESET
CLK_IN
PLL_CPC
PLL_BYPASS
Copyright 漏 2000-2003, Pulsus Technologies Inc.
1
2003 REV1.2

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