1 digital swap/mono, 2 input path channel b=a, 3 preamp and pga channel b=a – Cirrus Logic CS42L73 User Manual
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DS882F1
CS42L73
6.17 Miscellaneous Input and Output Path Control (Address 13h)
6.17.1 Digital Swap/Mono
Configures transformations on the Input Path A and B channel inputs to the digital mixer. Note that for any
of the transformed cases (‘01’, ‘10’, or ‘11’), both ADC/DMIC A and B must be powered up.
6.17.2 Input Path Channel B=A
Configures independent or ganged volume control of the mic/line input path. If ganging is enabled, chan-
nel B’s volume will be equal to channel A’s, regardless of channel B’s programming (see affected volume
controls listed below).
6.17.3 PREAMP and PGA Channel B=A
Configures independent or ganged volume control of the Preamp and PGA. If ganging is enabled, channel
B’s volume will be equal to channel A’s, regardless of channel B’s programming (see affected analog vol-
ume controls listed below).
7
6
5
4
3
2
1
0
D_SWAP_
MONO_CTL1
D_SWAP_
MONO_CTL0
IPB=A
PGAB=A
PGASFT
ANLGZC
DIGSFT
ANLGOSFT
D_SWAP_MONO_CTL[1:0]
Transform
Digital Mixer Stereo Input Sources
Input A
Input B
00
Not transformed
Input Path A
Input Path B
01
Mono Fanout of Input Path A
Input Path A
Input Path A
10
Mono Fanout of Input Path B
Input Path B
Input Path B
11
Swap of A and B
Input Path B
Input Path A
IPB=A
Single Volume Control (Ganging)
Affected Volume Controls
0
Disabled;
Independent channel Input Path volume control.
)
IPBDVOL[7:0] (
“Input Path x Digital Volume Con-
trol: Channel A (Address 17h) and B (Address
18h)” on page 99
1
Enabled;
Ganged channel input Path volume control.
Channel A’s Input Path volume control controls both A and B
channels’ volume.
PGAB=A Single Volume Control (Ganging)
Affected Analog Volume Controls
0
Disabled;
Independent channel PGA and Preamp volume control.
PREAMPB[1:0] and PGABVOL[5:0] (
)
1
Enabled;
Ganged channel PGA and Preamp volume control.
Channel A’s PGA volume control controls both A and B channels’
PGA volume.