參數(shù)資料
型號(hào): 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(yè)數(shù): 15/41頁(yè)
文件大小: 505K
代理商: PS9702B
PULSUS
PS9702B
Copyright 2000-2003, Pulsus Technologies Inc
.
15
2003 REV1.2
Register Name
Address
Word
Length
Description
AGC_CONTROL
0x11
2 Bytes
AGC control register.
[3:0]: AGC attack length control value.
Default = 0x6.
[6:4]: AGC attack height (in 0.5dB scale).
Default = 0x3.
[15:7]: AGC release length (x 0.6667msec).
Default = 0x180 (0.256 sec).
Default = 0xC036
PWM Modulator Configuration Register
PWM_CONTROL1
0x13
2 Bytes
PWM modulator control register 1.
[0]: Modulation index(PCM to PWM gain).
Default = “0”.
“0” = 90.63%
“1” = 93.75%
[1]: Auto DC cut enable. Active high.
Default = “1”.
[5:2]:
Reserved
.
Default = “0000”
[6]: Overload input signal polarity.
Default = “1”
“0” = Active Low, “1” = Active High.
[11:7]: Overload sustained time.
When overload condition is detected, all PWM outputs go to shutdown during
assigned time.
Default = “10000” (2.73sec)
“00000” = No shutdown.
“00001” ~ “11110” = multiple of 0.17sec.
“11111” = No recovery. To recover PWM signal, set the DDC_RESET
register (0x00) to “1” (PWM off) and then “0” (PWM on).
[15:12]:
Reserved.
Default = 0x0842
PWM_CONTROL2
0x14
2 Bytes
PWM modulator control register 2.
[0]: Interpolation method. “0” = Soft, “1” = Sharp.
Default = “0”.
[1]: Dither enable. “0” = Dither disable, “1” = Dither enable.
Default = “0”.
[2]: High S/N mode enable. “0” = Normal mode, “1” = High S/N mode.
Default = “0”.
[3]: High bandwidth Noise shaping filter enable.
Default = “0”.
“0” = Normal mode. “1’” = High bandwidth N/S filter enable.
[7:4]: PWM Linearizer Coefficient.
Default = “0000”.
[9:8]: Switching Frequency.
Default = “00”.
“00”, “11” = 384KHz
“01” = 192KHz
“10” = 96KHz.
[11:10]: Dead time between positive and negative PWM signal.
The unit is PWM clock (98.304MHz).
Default = “00”.
[14:12]: Modulation limit. The unit is PWM clock (98.304MHz).
Default = “000”.
[15]:
Reserved.
Default = 0x0000
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