AK4220 Datasheet, PDF (26/33 Pages) Asahi Kasei Microsystems – 7:3 Audio Switch and 6:3 Video Switch

I
[AK4220]
■ Register Map
Addr
Register Name
D7
D6
D5
D4
D3
D2
D1
D0
00H Power Down & Reset
0
0
0
SAGN
0
0
BIAS
PW
01H Input Selector 1
0
VSEL12 VSEL11 VSEL10
0
ASEL12 ASEL11 ASEL10
02H Input Selector 2
0
VSEL22 VSEL21 VSEL20
0
ASEL22 ASEL21 ASEL20
03H Input Selector 3
0
VSEL32 VSEL31 VSEL30
0
ASEL32 ASEL31 ASEL30
04H Detection Control1
0
VDSEL2 VDSEL1 VDSEL0
0
0
0
0
05H Detection Control2
RTM1 RTM0 ACT1 ACT0
0
ADSEL2 ADSEL1 ADSEL0
06H Detection Control3
VDMD MVDET MADETR MADETL
0
LV2
LV1
LV0
07H Parallel Output
0
0
0
Q4
Q3
Q2
Q1
Q0
08H AV Detection
0
VDET ADETR ADETL
0
0
0
0
Note:
When the PDN pin goes “L”, the registers are initialized to their default values.
The bits indicated to “0” in the register map must contain a “0” value.
Do not write any data to the register over 09H.
■ Register Definitions
Reset & Initialize
Addr
00H
Register Name
Power Down & Reset
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
SAGN
0
0
BIAS
PW
R/W R/W R/W R/W R/W R/W R/W R/W
0
0
0
0
0
0
0
1
PW: Power bit
0: Power-down except register control block. The register don’t change. (default)
1: Normal operation
When PDN pin=“L”, PW bit becomes “1” and the registers are initialized to their default values.
BIAS: Audio Bias Power bit
0: Power-down the Audio Bias Circuit (default)
1: Normal operation
SAGN: Video output selector bit
0: Sag Compensation mode (default)
1: DC output mode
Addr
01H
Register Name
Input Selector 1
R/W
Default
D7
0
R/W
0
D6
VSEL12
R/W
0
D5
VSEL11
R/W
0
D4
VSEL10
R/W
0
D3
0
R/W
0
D2
ASEL12
R/W
0
D1
ASEL11
R/W
0
D0
ASEL10
R/W
0
ASEL12-10: Audio Input Selector 1
Refer Table 1
VSEL12-10: Video Input Selector 1
Refer Table 4
MS0627-E-00
- 26 -
2007/05