AK8813 Datasheet, PDF (39/51 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHIKASEI
[AK8813/14]
Reserved Register (R/W) [Address 0x04]
Sub Address 0x04
bit 7
bit 6
Reserved
Reserved
1
0
bit 5
Reserved
1
bit 4
bit 3
Reserved
Reserved
Default Value
0
1
Reserved
BIT
bit 0
~
bit 7
Register
Name
Reserved
Reserved bit.
R/W
R/W Reserved
bit 2
Reserved
0
default Value 0xAA
bit 1
bit 0
Reserved
Reserved
1
0
Definition
DAC Mode Register (R/W) [Address 0x05]
Sub Address 0x05
bit 7
bit 6
Reserved
Reserved
0
0
bit 5
Reserved
0
bit 4
bit 3
Reserved
Reserved
Default Value
0
0
bit 2
OUTCP
0
default Value 0x00
bit 1
bit 0
OUTC
OUTY
0
0
DAC Mode Register Definition
BIT
Register
Name
bit 0
OUTY
YDAC Out bit
bit 1
OUTC
CDAC Out bit
bit 2
OUTCP
CPDAC Out bit
bit 3
~
Reserved Reserved bit.
bit 7
R/W
Definition
0: Y signal output : OFF
R/W
1: Y signal output : ON
0: Chrominance signal output : OFF
R/W
1: Chrominance signal output : ON
0: Composite video signal or U signal output : OFF
R/W
1: Composite video signal or U signal output : ON
R/W Reserved
• Video output of AK8813/14 (DAC) can be forced “OFF” independently.
The output of DAC that is forced “OFF” is Hi-impedance. When three DACs are forced
“OFF”, then the internal VREF is also forced “OFF”. In this case, it takes several milliseconds
before the internal VREF reaches the proper voltage after any DAC becomes “ON”.
Rev.00
- 40 -
2004/Oct