Cirrus Logic CS4341A - Manual (Page 19)

CS4341A
DS582F2 19
5.2.4 POPGUARD ® TRANSIENT CONTROL (POR)
BIT 1
Default = 1
0 - Disabled
1 - Enabled
Function:
The PopGuard
®
Transient Control allows the quiescent voltage to slowly ramp to and from 0 volts to
the quiescent voltage during power-on or power-down. Please refer to section 3.7 for implementation
details.
5.2.5 POWER DOWN (PDN)
BIT 0
Default = 1
0 - Disabled
1 - Enabled
Function:
The device will enter a low-power state when this function is enabled. The power-down bit defaults to
‘enabled’ on power-up and must be disabled before normal operation can occur. The contents of the
control registers are retained in this mode.
5.3 TRANSITION AND MIXING CONTROL (ADDRESS 02H)
5.3.1 CHANNEL A VOLUME = CHANNEL B VOLUME (A = B)
BIT 7
Default = 0
0 - Disabled
1 - Enabled
Fucntion:
The AOUTA and AOUTB volume levels are independently controlled by the A and the B Channel Vol-
ume Control Bytes when this function is disabled. The volume on both AOUTA and AOUTB are de-
termined by the A Channel Volume Control Byte and the B Channel Byte is ignored when this function
is enabled.
7 6 5 4 3 2 1 0
A = B SZC1 SZC0 ATAPI4 ATAPI3 ATAPI2 ATAPI1 ATAPI0
0 1 0 0 1 0 0 1