CS4231A Datasheet, PDF (42/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CS4231A
MIM
Mono Input Mute. This bit controls the
mute function on the mono input,
MIN to the mixer. The mono input
provides mix for the "beeper" func-
tion in most personal computers.
When MIM = 0, MBY should be 0.
0 - no mute
1 - muted
This register’s initial state after reset is: 101x0000.
RESERVED (I27)
D7 D6 D5 D4 D3 D2 D1 D0
res res res res res res res res
This register’s initial state after reset is: xxxxxxxx
Capture Data Format (I28)
D7 D6 D5 D4 D3 D2 D1 D0
FMT1 FMT0 C/L S/M res res res res
S/M
Stereo/Mono Select: This bit deter-
mines how the capture audio data
stream is formatted. Selecting stereo
will result with alternating samples
representing left and right audio
channels. Selecting mono only cap-
tures data from the left audio
channel.
0 - Mono
1 - Stereo
The C/L, FMT1, and FMT0 bits set the capture data
format in MODE 2. See Table 10 or register I8 for
the bit settings and data formats. The capture data
format can be different that the playback data for-
mat; however, the sample frequency must be the
same and is set in I8. MCE (R0) or CMCE (I16)
must be set to modify this register. See Changing
Audio Data Formats section for more details.
This register’s initial state after reset is: 0000xxxx
RESERVED (I29)
D7 D6 D5 D4 D3 D2 D1 D0
res res res res res res res res
This register’s initial state after reset is: xxxxxxxx
Capture Upper Base (I30)
D7 D6 D5 D4 D3 D2 D1 D0
CUB7 CUB6 CUB5 CUB4 CUB3 CUB2 CUB1 CUB0
CUB7-CUB0
Capture Upper Base: This register is
the upper byte which represents the
8 most significant bits of the 16-bit
Capture Base register. Reads from
this this register returns the same
value that was written.
This register’s initial state after reset is: 0000000
Capture Lower Base (I31)
D7 D6 D5 D4 D3 D2 D1 D0
CLB7 CLB6 CLB5 CLB4 CLB3 CLB2 CLB1 CLB0
CLB7-CLB0
Lower Base Bits: This register is the
lower byte which represents the 8
least significant bits of the 16-bit
Capture Base register. Reads from
this register returns the same value
which was written.
This register’s initial state after reset is: 00000000
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DS139PP2