ACS422A68TAGZBX8 IDT, ACS422A68TAGZBX8 Datasheet - Page 13

• 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. OUTPUT AUDIO PROCESSING
DMonoMix
Mono
3.1.
Before processing, a DC removal filter removes the DC component from the incoming audio data. The DC removal fil-
ter is programmable.
18h
Mix
R65 (41h)
DCOFSEL
Register Address
DC-Coef_Sel
Removal
41h
DC
DC Removal
39h
Treble
Bass
3-D
PA
PA
FXCTRL
DACCRAM 96h
DACCRAM ADh
DACCRAM AFh
Bit
7:3
2:0
3Ah – 3Ch
3Dh – 3Fh
DACCRAM AEh – AFh
DACCRAM 00h – 3Dh
DACCRAM 40h – 7Dh
DACCRAM 97h – ADh
DACCRAM 80h – 96h
Prescale
1
Bass/Treble Enhancement
Dynamic Range Expander
Label
Audio Processing
Compressor-limiter
WRITE
READ
SPEAKER EQ
SYSTEM EQ
–
-
3-D effect
EQ1
Figure 3. Output Audio Processing
Table 4. DC_COEF_SEL Register
8Ah
40h
Prescale
Treble Coefficients
Bass Coefficients
EQ1 Coefficients
EQ2 Coefficients
3D Coefficients
2
Type
ADDRESS
STATUS
RW
R
EQ2
DAC_L/R
Default
13
De-emphasis
0
5
emphasis
De-
18h
BTL/HP Power
BTL/HP Power
Management
Management
Interpolation
Reserved for future use.
0: dc_coef = 24'h100000; //2^^-3 = 0.125
1: dc_coef = 24'h040000;
2: dc_coef = 24'h010000;
3: dc_coef = 24'h004000;
4: dc_coef = 24'h001000;
5: dc_coef = 24'h000400;
6: dc_coef = 24'h000100; //2^^-15 = 0.00030517
7: dc_coef = 24'h000040; //2^^-17
1Bh
1Bh
Compressor
Expander
Limiter
2Dh – 32h
26h – 2Ch
33h – 38h
RIGHT
25h
LEFT
+6 to -88.5 dB
In 0.75 dB steps
HP Volume
+6 to -88.5 dB
In 0.75 dB steps
HP Volume
Expander
Limiter
Compressor
Control
(Digital)
+12 to -77.25 dB
In 0.75 dB steps
(Digital)
+12 to -77.25 dB
In 0.75 dB steps
02h
00h
03h
01h
0 to 46.5 dB
In 1.5 dB steps
SPKR
SPKR
Description
VOL
VOL
GAIN
DAC
DAC
Digital PWM
Digital PWM
18h
controller
controller
Phase
Invert
1Ch – 1Eh
1Ch – 1Eh
88h
88h
DACPOL
Anti-
Anti-
pop
pop
BTL
BTL
Thermal
Thermal
0.375dB steps
HP
0 to -95.25dB
HP
DAC Volume
Detect
Limit
Detect
Limit
HP
HP
Mute
04h – 05h
18h
ACS422X68
V1.6 01/13
HP Out Left
Class D Left
HP Out Right
Class D Right
DAC Volume
Mute
DAC_L/R