WM8816
Product Preview
REGISTER MAP
REGISTER
ADDRESS BYTE BITS
DATA BYTE
7
6
5
4
3
2
1
0
MSB…LSB
Output code
00000000
00000001
00000010
00000011
Input code
11111111
11111110
11111101
:
Function
Peak Detector Status
R4
X
1
0
1
1
R/W
X
X
No overload
Right overload
Left overload
Both overload
DAC output
255/256 × 18V
254/256 × 18V
253/256 × 18V
:
Peak Detector
Reference
X
1
1
0
0
R/W
X
X
R3
00000010
00000001
00000000
2/256 × 18V
1/256 × 18V
AGND
Left Channel Gain
R2
X
1
1
0
1
R/W
X
X
Input code
11111111
11111110
11111101
:
Gain dB
+15.5
+15.0
+14.5
:
11100000
00000010
00000001
00000000
0.0
-111.0
-111.5
mute
Right Channel Gain
R1
X
1
1
1
0
R/W
X
X
Input code
11111111
11111110
11111101
:
Gain dB
+15.5
+15.0
+14.5
:
11100000
00000010
00000001
00000000
0.0
-111.0
-111.5
mute
Both Channel Gains
R5
X
1
0
0
1
W
X
X
Write to both gain registers
Table 1 Register Map Description
Notes:
1. Address bit 2 is the read / write bit (1 for read, 0 for write).
2. X represents ‘do not care’ entries. Set to 1 for minimum power consumption.
3. All registers are set to their default value (all zeros) during power-on reset, except R3 which is set to 255.
Rev 1.5 October 2004
8
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
