cs4228a Cirrus Logic, Inc., cs4228a Datasheet - Page 24

• Manufacturer Part Number: cs4228a
• Description: 24-bit, 96 Khz Surround Sound Codec
• Manufacturer: Cirrus Logic, Inc.

5.6
MUTEC
MUTCZ
HMUTE56/34/12
5.7
DEMS1:0
DEM6 - DEM1
5.8
VOL6 - VOL1
24
MUTEC
DEMS1
7
1
7
1
7
0
DAC Mute2 Control
DAC De-emphasis Control
Digital Volume Control
Address 0x05
Address 0x06
Addresses 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C
MUTCZ
DEMS0
zeros on all six DAC inputs will cause the MUTEC pin to be asserted low. A single non-zero
value on any DAC input will cause the MUTEC pin to deassert.
DAC pair causing an instantaneous mute. To prevent high frequency transients on the outputs,
a DAC pair should be fully attenuated by asserting the corresponding MUT6-MUT1 bits in the
DAC Mute Control register or by writing 0xFF to the corresponding Digital Volume Control reg-
isters before asserting HMUTE.
level is ramped up and down at the rate specified by RMP1:0 in the DAC Volume Control Setup
register.
Controls the MUTEC pin
0 -
*1 -
Automatically asserts the MUTEC pin on consecutive zeros. When enabled, 512 consecutive
*0 -
1 -
Hard mute the corresponding DAC pair. When asserted, zero data is sent to the corresponding
*0 -
1 -
Selects the DAC de-emphasis response curve.
0 -
1 -
*2 -
3 -
De-emphasis control for DAC6 - DAC1 respectively
*0 -
1 -
Address 0x0C - 0x07 sets the attenuation level for DAC 6 - DAC1 respectively. The attenutation
0 - 181 represents 0 to 90.5 dB of attenuation in 0.5 dB steps.
6
0
6
0
6
0
Normal operation
MUTEC pin asserted low
Disabled
Enabled
Normal operation
DAC pair is muted
Reserved
De-emphasis for 48 kHz
De-emphasis for 44.1 kHz
De-emphasis for 32 kHz
De-emphasis off
De-emphasis on
DEM6
5
0
5
0
5
0
RESERVED
DEM5
4
0
4
0
4
0
VOLn
HMUTE56
DEM4
3
0
3
0
3
0
HMUTE34
DEM3
2
0
2
0
2
0
HMUTE12
DEM2
1
0
1
0
1
0
CS4228A
RESERVED
DEM1
0
0
0
0
0
0