CS4382A-EQZ CIRRUS [Cirrus Logic], CS4382A-EQZ Datasheet - Page 34

• Manufacturer Part Number: CS4382A-EQZ
• Description: 114 dB, 192 kHz 8-channel D/A Converter
• Manufacturer: CIRRUS [Cirrus Logic]

34
5.2.2 Mode Control 3 (address 03h)
5.2.3 Soft Ramp AND Zero Cross CONTROL (SZC)
5.2.4 Single Volume Control (Snglvol)
SZC1
1
7
Default = 10
00 - Immediate Change
01 - Zero Cross
10 - Soft Ramp
11 - Soft Ramp on Zero Crossings
Function:
Immediate Change
When Immediate Change is selected all level changes will take effect immediately in one step.
Zero Cross
Zero Cross Enable dictates that signal level changes, either by attenuation changes or muting, will occur
on a signal zero crossing to minimize audible artifacts. The requested level change will occur after a timeout
period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample rate) if the signal does
not encounter a zero crossing. The zero cross function is independently monitored and implemented for
each channel.
Soft Ramp
Soft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally ramping,
in 1/8 dB steps, from the current level to the new level at a rate of 1 dB per 8 left/right clock periods.
Soft Ramp on Zero Crossing
Soft Ramp and Zero Cross Enable dictates that signal level changes, either by attenuation changes or mut-
ing, will occur in 1/8 dB steps and be implemented on a signal zero crossing. The 1/8 dB level change will
occur after a timeout period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample
rate) if the signal does not encounter a zero crossing. The zero cross function is independently monitored
and implemented for each channel.
Default = 0
0 - Disabled
1 - Enabled
Function:
The individual channel volume levels are independently controlled by their respective Volume Control Bytes
when this function is disabled. The volume on all channels is determined by the A1 Channel Volume Con-
trol Byte, and the other Volume Control Bytes are ignored when this function is enabled.
SZC0
6
0
SNGLVOL
5
0
RMP_UP
0
4
MUTEC+/-
3
0
AMUTE
2
1
Reserved
0
1
CS4382A
DS618PP1
MUTEC
0
0