PCM3793A
PCM3794A
www.ti.com
Register 87
Register 87
SLAS529A–JANUARY 2007–REVISED FEBRUARY 2007
B15
0
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
AD2S
RSV
AIR1
AIR0
RSV
RSV
AIL1
AIL0
IDX[6:0]: 101 0111b (57h): Register 87
AD2S: Differential Amplifier Selector (MUX3 and MUX4)
Default value: 0
The PCM3793A/94A has stereo single-input amplifiers (PG1, PG2) and a monaural differential-input amplifier
(D2S) which can output signals to the ADC. MUX3 and MUX4 can be selected as the monaural differential input
by setting AD2S = 1.
AD2S = 0
AD2S = 1
Single-input amplifiers (default)
Differential-input amplifier
AIL[1:0]: AIN1L, AIN2L, and AIN3L Selector (MUX1)
Default value: 00
These bits are used to select one of the three analog inputs, AIN1L, AIN2L, or AIN3L.
AIL[1:0]
0 0
AIN L-channel Select
Disconnect (default)
AIN1L
0 1
1 0
AIN2L
1 1
AIN3L
AIR[1:0]: AIN1R, AIN2R, and AIN3R Selector (MUX2)
Default value: 00
These bits are used to select one of the three stereo analog inputs, AIN1R, AIN2R, or AIN3R.
AIR[1:0]
0 0
AIN R-channel Select
Disconnect (default)
AIN1R
0 1
1 0
AIN2R
1 1
AIN3R
51
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