cs4223 Cirrus Logic, Inc., cs4223 Datasheet - Page 16

• Manufacturer Part Number: cs4223
• Description: 24-bit, 105 Db Codecs With Volume Control
• Manufacturer: Cirrus Logic, Inc.

5.1.6
5.2
5.2.1
5.2.2
5.2.3
16
Reserved
7
0
CLOCKING ERROR (CLKE) (READ ONLY)
DAC Control (address 02h)
MUTE ON CONSECUTIVE ZEROS (MUTC)
MUTE CONTROL (MUTR-MUTL)
SOFT RAMP CONTROL (SOFT)
Function:
Function:
Function:
Default = 0
0 - No error
1 - Error
Default = 0
0 - Disabled
1 - Enabled
The DAC output will mute following the reception of 512 consecutive audio samples of static 0 or -1
when this function is enabled. A single sample of non-static data will release the mute. Detection and
muting is done independently for each channel. The muting function is affected, similar to volume
control changes, by the SOFT bit in the DAC Control register.
Default = 0
0 - Disabled
1 - Enabled
The output for the selected DAC channel will be muted when this function is enabled. The muting
function is affected, similar to volume control changes, by the SOFT bit in the DAC Control register.
Default = 0
0 - Soft Ramp level changes
1 - Zero Cross level changes
Soft Ramp level changes will be implemented by incrementally ramping, in 0.5 dB steps, from the cur-
rent level to the new level. The rate of change defaults to 0.5 dB per 8 left/right clock periods and is
adjustable through the RMP bits in the DAC Control register.
Zero Cross level changes will be implemented in a single step from the current level to the new level.
The level change takes effect on a zero crossing to minimize audible artifacts. If the signal does not
encounter a zero crossing, the level change will occur after a timeout period of 512 sample periods
(10.7 ms at 48 kHz sample rate). Zero crossing is independently monitored and implemented for each
channel. The ACCR and ACCL bits in the Converter Status Report register indicate when a level
change has occurred for the right and left channel.
MUTC
6
0
MUTR
5
0
MUTL
4
0
SOFT
3
0
Reserved
2
0
RMP1
CS4223 CS4224
1
0
RMP0
DS290F1
0
0