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參數(shù)資料
| 型號： | PS9702B |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 6Ch, 24bit, 192kHz Digital Audio Processor for Full Digital Amplifier |
| 中文描述： | 6通道，24位，192kHz的數(shù)字音頻處理器的全數(shù)字放大器 |
| 文件頁數(shù)： | 8/41頁 |
| 文件大?。?/td> | 505K |
| 代理商： | PS9702B |
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PULSUS
PS9702B
Signal Descriptions
1. Clock and Reset
Copyright 2000-2003, Pulsus Technologies Inc
.
8
2003 REV1.2
The PS9702B uses 98.304MHz (48KHz x 2048) system clock internally. The PS9702B uses external
12.288MHz clock source and has x8 PLL (Phase Locked Loop) for internal system clock generation.
PS9702B can select the system clock between the internally generated clock and the external input clock
(In this case the external input clock must be 98.304MHz).
2. PCM Audio Input Signals
PS9702B uses serial interface for PCM audio data input using
BCK
,
LRCK
, and
DIN
pins. It has one
input port for six channel audio data (named as main channel) and has three sub-input port for two channel
audio data (named as sub-channel). But the three sub-input ports can be used as one six-channel audio
input port.
3. PWM Audio Output Signals
The PS9702B converts PCM audio data to PWM audio signal. It outputs one six-channel PWM signal for
main audio, one two-channel PWM signal for record-out and one additional two-channel PCM signal for
record-out. All PWM signal consist of the both positive and negative PWM signals.
4. Control Interface Signals
The PS9702B supports internal control register I/O using both SPI and I
2
C. The pin
SPI/I2C
selects the
control interface method. The control registers has 8-bit address space and 16-bit or 24-bit data length. All
internal control registers are both readable and writable.
5. Special Control Signals
The PS9702B can generate only AD mode PWM signal. For more information about the Power stage
driving method and BD/AD mode of PWM amplifier, refer the “PULSUS PWM Amplification application
notes”.
The PS9702B has Overload protection logic. When the pin
OVERLOAD
is “HIGH” (default setting, the
polarity is programmable), the PS9702B goes to protection mode and all PWM outputs go to “LOW” (default
setting).
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