TI中文支持网如标题所述，在使用TAS2505作为功放的时候，SPK有杂音输出，不知道问题在哪里，请教一下。配置参考手册中，具体如下：
# I2C Script to Setup the device in Playback Mode
# Key: w 30 XX YY ==> write to I2C address 0x30, to register 0xXX, data 0xYY
# This script set DAC output routed to HP Driver and Class-D driver via Mixer
# # ==> comment delimiter
# Page switch to Page 0
W 30 00 00
# Assert Software reset (P0, R1, D0=1)
W 30 01 01
# Page Switch to Page 1
W 30 00 01
# LDO output programmed as 1.8V and Level shifters powered up. (P1, R2, D5-D4=00, D3=0)
W 30 02 00
# Page switch to Page 0
W 30 00 00
#PLL_clkin = BCLK, codec_clkin = PLL_CLK, BCLK = 1.536MHz WCLK=48KHz (P0, R4, D1-D0=07)
W 30 04 07
# Power up PLL, set P=1, R=4, (Page-0, Reg-5)
w 30 05 94
# Set J=14, (Page-0, Reg-6)
w 30 06 0E
# D = 0000, D(13:8) = 0, (Page-0, Reg-7)
w 30 07 00
w 30 08 00
# add delay of 15 ms for PLL to lock
d 15
#DAC NDAC Powered up, NDAC=2 (P0, R11, D7=1, D6-D0=0000100)
W 30 0B 82
#DAC MDAC Powered up, MDAC=7 (P0, R12, D7=1, D6-D0=0000010)
W 30 0C 87
#DAC OSR(9:0)-> DOSR=128 (P0, R12, D1-D0=00)
W 30 0D 00
#DAC OSR(9:0)-> DOSR=128 (P0, R13, D7-D0=10000000)
W 30 0E 80
# Codec Interface control Word length = 16bits, BCLK&WCLK inputs, I2S mode. (P0, R27, D7- D6=00, D5-D4=00, D3-D2=00)
W 30 1B 00
# Data slot offset 00 (P0, R28, D7-D0=0000)
W 30 1C 00
# Dac Instruction programming PRB #2 for Mono routing. Type interpolation (x8) and 3 programmable
Biquads. (P0, R60, D4-D0=0010)
W 30 3C 02
# Page Switch to Page 1
W 30 00 01
# Master Reference Powered on (P1, R1, D4=1)
W 30 01 10
# Output common mode for DAC set to 0.9V (default) (P1, R10)
W 30 0A 00
#SPK attn. Gain =0dB (P1, R46, D6-D0=000000)
W 30 2E 00
#SPK driver Gain=6.0dB (P1, R48, D6-D4=001)
W 30 30 10
#SPK powered up (P1, R45, D1=1)
W 30 2D 02
# Page switch to Page 0
W 30 00 00
# DAC powered up, Soft step 1 per Fs. (P0, R63, D7=1, D5-D4=01, D3-D2=00, D1-D0=00)
W 30 3F 90
# DAC digital gain 0dB (P0, R65, D7-D0=00000000)
W 30 41 00
# DAC volume not muted. (P0, R64, D3=0, D2=1)
W 30 40 04
#
user151383853：
先看看是不是硬件的问题, 比如电路元器件, 电源噪声…
