AK4705 Datasheet, PDF (31/50 Pages) Asahi Kasei Microsystems – 2ch 24bit DAC with AV SCART Switch

[AK4705]
4. Blanking Control
The AK4705 supports Fast Blanking signals and Slow Blanking (Function Switching) signals for TV/VCR SCART.
■ Input/Output Control for Fast/Slow Blanking
FB1-0: TV Fast Blanking output control (07H: D1-D0)
FB1
FB0
TVFB pin Output Level
0
0
0V
(default)
0
1
4V
1
0 Same as VCR FB input (4V/0V)
1
1
(Reserved)
(Note: Minimum load is 150ohm)
Table 22. TV Fast Blanking output
SBT1-0: TV Slow Blanking output control (07H: D3-D2)
SBT1
0
0
1
1
SBT0
TVSB pin Output Level
0
<2V
(default)
1
5V to 7V
0
(Reserved)
1
10V<
(Note: Minimum load is 10kohm)
Table 23. TV Slow Blanking output
SBV1-0: VCR Slow Blanking output control (07H: D5-D4)
SBV1
0
0
1
1
SBV0
VCRSB pin Output Level
0
<2V
(default)
1
5V to 7V
0
(Reserved)
1
10V<
(Note: Minimum load is 10kohm)
Table 24. VCR Slow Blanking output
SBIO1-0: TV/VCR Slow Blanking I/O control (07H: D7-D6)
SBIO1
0
0
1
SBIO0
0
1
0
1
1
VCRSB pin Direction
TVSB pin Direction
Output
Output
(Controlled by SBV1,0)
(Controlled by SBT1,0)
(Reserved)
(Reserved)
Input
Output
(Stored in SVCR1,0)
(Controlled by SBT1,0)
Input
Output
(Stored in SVCR1,0)
(Same output as VCR SB)
Table 25. TV/VCR Slow Blanking I/O control
(default)
MS0451-E-01
- 31 -
2007/06