ACS422A68TAGZBX8 IDT, ACS422A68TAGZBX8 Datasheet - Page 14

• Manufacturer Part Number: ACS422A68TAGZBX8
• Description: Interface - CODECs
• Manufacturer: IDT

Specifications of ACS422A68TAGZBX8

• Rohs: yes
• Part # Aliases: IDTACS422A68TAGZBX8

ACS422x68
LOW-POWER, HIGH-FIDELITY, INTEGRATED CODEC
©2011 INTEGRATED DEVICE TECHNOLOGY, INC.
3.2.
The signal volume can be controlled digitally, across a gain and attenuation range of -95.25dB to 0dB (0.375dB steps).
The level of attenuation is specified by an eight-bit code, ‘DACVOL_x’, where ‘x’ is L, or R. The value “00000000” indi-
cates mute; other values select the number of 0.375dB steps above -95.625dB for the volume level.
The Volume Update bits control the updating of volume control data; when a bit is written as ‘0’, the Left Volume control
associated with that bit is updated whenever the left volume register is written and the Right Volume control is updated
when ever the right volume register is written. When a bit is written as ‘1’, the left volume data is placed into an internal
holding register when the left volume register is written and both the left and right volumes are updated when the right
volume register is written. This enables a simultaneous left and right volume update
The output path may be muted automatically when a long string of zero data is received. The length of zeros is pro-
grammable and a detection flag indicates when a stream of zero data has been detected.
R31 (1Fh)
CONFIG0
R10 (0Ah)
VUCTL
Register Address
Register Address
Volume Control
Bit
7:6
5:4
3:2
Bit
1
0
7
6
5
4
3
2
1
0
DSDM[1:0]
ASDM[1:0]
dc_bypass
ADCVOLU
DACVOLU
SPKVOLU
ADCFade
DACFade
HPVOLU
INVOLU
RSVD
RSVD
RSVD
Label
Label
Table 6. Volume Update Control Register
Table 5. CONFIG0 Register
Type
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
R
R
R
Default
Default
14
10h
10h
0h
0
0
1
1
0
0
0
0
0
0
ADC Modulator Rate
DAC Modulator Rate
Reserved for future use.
1 = bypass DC removal filter
(WARNING DC content can damage speakers)
Reserved
1 = volume fades between old/new value
0 = volume/mute changes immediately
1 = volume fades between old/new value
0 = volume/mute changes immediately
Reserved for future use.
0 = Left input volume updated immediately
1 = Left input volume held until right input volume
register written.
0 = Left ADC volume updated immediately
1 = Left ADC volume held until right ADC volume
register written.
0 = Left DAC volume updated immediately
1 = Left DAC volume held until right DAC volume
register written.
0 = Left speaker volume updated immediately
1 = Left speaker volume held until right speaker
volume register written.
0 = Left headphone volume updated immediately
1 = Left headphone volume held until right
headphone volume register written.
Description
Description
ACS422X68
V1.6 01/13