SLOS545C – NOVEMBER 2008 – REVISED MARCH 2009 .............................................................................................................................................. www.ti.com
Page 0 / Register 17:
MIC3L/R to Left ADC Control Register
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7-D4
R/W
1111
MIC3L Input Level Control for Left ADC PGA Mix
Setting the input level control to a gain below automatically connects MIC3L to the left ADC PGA
mix
0000: Input level control gain = 0.0 dB
0001: Input level control gain = –1.5 dB
0010: Input level control gain = –3.0 dB
0011: Input level control gain = –4.5 dB
0100: Input level control gain = –6.0 dB
0101: Input level control gain = –7.5 dB
0110: Input level control gain = –9.0 dB
0111: Input level control gain = –10.5 dB
1000: Input level control gain = –12.0 dB
1001–1110: Reserved. Do not write these sequences to these register bits
1111: MIC3L is not connected to the left ADC PGA
D3-D0
R/W
1111
MIC3R Input Level Control for Left ADC PGA Mix
Setting the input level control to a gain below automatically connects MIC3R to the left ADC PGA
mix
0000: Input level control gain = 0.0 dB
0001: Input level control gain = –1.5 dB
0010: Input level control gain = –3.0 dB
0011: Input level control gain = –4.5 dB
0100: Input level control gain = –6.0 dB
0101: Input level control gain = –7.5 dB
0110: Input level control gain = –9.0 dB
0111: Input level control gain = –10.5 dB
1000: Input level control gain = –12.0 dB
1001–1110: Reserved. Do not write these sequences to these register bits
1111: MIC3R is not connected to the left ADC PGA
Page 0 / Register 18:
MIC3L/R to Right ADC Control Register
BIT
READ/
RESET
DESCRIPTION
WRITE
VALUE
D7–D4
R/W
1111
MIC3L Input Level Control for Right ADC PGA Mix
Setting the input level control to a gain below automatically connects MIC3L to the right ADC
PGA mix
0000: Input level control gain = 0.0 dB
0001: Input level control gain = –1.5 dB
0010: Input level control gain = –3.0 dB
0011: Input level control gain = –4.5 dB
0100: Input level control gain = –6.0 dB
0101: Input level control gain = –7.5 dB
0110: Input level control gain = –9.0 dB
0111: Input level control gain = –10.5 dB
1000: Input level control gain = –12.0 dB
1001–1110: Reserved. Do not write these sequences to these register bits
1111: MIC3L is not connected to the right ADC PGA
D3–D0
R/W
1111
MIC3R Input Level Control for Right ADC PGA Mix
Setting the input level control to a gain below automatically connects MIC3R to the right ADC
PGA mix
0000: Input level control gain = 0.0 dB
0001: Input level control gain = –1.5 dB
0010: Input level control gain = –3.0 dB
0011: Input level control gain = –4.5 dB
0100: Input level control gain = –6.0 dB
0101: Input level control gain = –7.5 dB
0110: Input level control gain = –9.0 dB
0111: Input level control gain = –10.5 dB
1000: Input level control gain = –12.0 dB
1001–1110: Reserved. Do not write these sequences to these register bits
1111: MIC3R is not connected to right ADC PGA
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