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AD1816AJS 数据表(PDF) 35 Page - Analog Devices |
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AD1816AJS 数据表(HTML) 35 Page - Analog Devices |
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35 / 52 page  AD1816A –35– REV. A [19] MIC/PHONE _IN GAIN/ATTENUATION DEFAULT = [0x8888] 7654321076543210 MCM M20 RES MCA [4:0] PIM RES PIA [3:0] RES PIA [3:0] PHONE_IN Attenuation. The LSB represents –3 dB, 0000 = 0 dB and the range is 0 dB to –45 dB. PIM PHONE_IN Mute. MCA [4:0] Microphone Attenuation. The LSB represents –1.5 dB, 00000 = +12 dB and the range is ±12 dB to –34.5 dB. M20 Microphone 20 dB Gain. The M20-bit enables the Microphone +20 dB gain stage. MCM Microphone Mute. [20] ADC SOURCE SELECT AND ADC PGA DEFAULT = [0x0000] 7654321076543210 LAGC LAS [2:0] LAG [3:0] RAGC RAS [2:0] RAG [3:0] RAG [3:0] Right ADC Gain Control ADC source select and Gain. For Gain, LSB represents +1.5 dB, 0000 = 0 dB and the range is 0 dB to +22.5 dB. RAGC Right Automatic Gain Control (AGC) Enable, 1 = Enabled, 0 = Disabled. LAG [3:0] Left ADC Gain Control ADC source select and Gain. For Gain, LSB represents +1.5 dB, 0000 = 0 dB and the range is 0 dB to +22.5 dB. LAGC Left Automatic Gain Control (AGC) Enable, 1 = Enabled, 0 = Disabled. RAS [2:0] ADC Right Input Source LAS [2:0] ADC Left Input Source 000 R_LINE 000 L_LINE 001 R_OUT 001 L_OUT 010 R_CD 010 L_CD 011 R_SYNTH 011 L_SYNTH 100 R_VID 100 L_VID 101 Mono Mix 101 MIC 110 Reserved 110 PHONE_IN 111 Reserved 111 Reserved Note: When the AGC is enabled, gain control settings for the ADC PGA are overridden for all inputs. [32] CHIP CONFIGURATION DEFAULT = [0x00F0] 7654321076543210 WSE CDE RES CNP RES COF [3:0] I 2SF1 [1:0] I 2SF0 [1:0] I 2SF0 [1:0] I 2S Port Configuration for serial data type. I 2SF1 [1:0] 00 Disabled 01 Right Justified 10 I 2S Justified 11 Left Justified COF [3:0] Clock Output Frequency. Programmable clock output on PCLKO pin is determined using the following formula PCLKO = 256 × PCR/2COF where COF = 0:11 and PCR is the value of the Programmable Clock Rate Register, SS [38]. If COF > 11, then PCLKO is disabled. CNP Capture not equal to Playback. 0 = Capture equals Playback. The capture sample rate is determined by the playback sample rate in SS [02]. 1 = Capture not equal to Playback. CDE CD Enable, Set to “1” when a CD player is connected to I 2S (0), maps SoundBlaster CD mixer controls from the analog CD attenuator inputs to I 2S (0) serial port. WSE Sound System Enable. 0 = SoundBlaster Mode. 1 = Sound System Mode under Windows. Note: When in SoundBlaster Mode, the Codec ADC and DAC channels will be used solely for converting SoundBlaster data. |
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