https://e2e.ti.com/support/audio-group/audio/f/audio-forum/1175836/adc5140evm-pdk-about-agc-settings
器件型号:ADC5140EVM-PDK我正在尝试更改 AGC 释放时间。
根据文档"在 TLV320ADCx140中使用自动增益控制器(AGC)"、我在 I2C 命令中输入了以下内容、但操作没有变化。
w 98 00 00 # Goto Page 0 w 98 02 81 # Wake-up device by I2C write into P0_R2 using internal AREG w 98 02 81 # Exit Sleep mode d 10 # Wait for 16 ms w 98 6C 48 # Enable AGC in DSP_CFG1 w 98 3C 01 # Select AGC on Ch. 1 using CH1_CFG0 w 98 41 01 # Select AGC on Ch. 2 using CH2_CFG0 w 98 74 01 # Select AGC on Ch. 3 using CH3_CFG0 w 98 75 01 # Select AGC on Ch. 4 using CH4_CFG0 w 98 70 0B # AGC LVL = -6 dB, AGC GAIN = 36 dB w 98 00 05 # Goto Page 5 w 98 7C 7F FF 40 01 # AGC Release Time Alpha w 98 00 06 # Goto Page 6 w 98 08 00 00 BF FF # AGC Release Time Beta w 98 00 00 # Goto Page 0 w 98 07 30 # TDM Mode with 32 Bits/Channel w 98 73 f0 # Enable Ch.1 - Ch.4 w 98 74 f0 # Enable ASI Output channels w 98 75 e0 # Power up ADC