AK4703 Datasheet, PDF (17/38 Pages) Asahi Kasei Microsystems – AV SCART switch

ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
„ Video Output Control (05H: D6-D0)
Each video output can be set to Hi-Z individually via control registers. These settings are ignored when the AUTO bit =
“1”. When the CIO bit = “1”, the VCRC pin outputs 0V even if the VCRC bit = “0”. When the CIO bit = “0”, the VCRC
pin follows the setting of VCRC bit. Please refer the “Red/Chroma Bi-directional Control for VCR SCART”.
TVV: TVVOUT output control
TVR: TVRCOUT output control
TVG: TVGOUT output control
TVB: TVBOUT output control
VCRV: VCRVOUT output control
VCRC: VCRC output control
TVFB: TVFB output control
0: Hi-Z. (Default)
1: Active.
„ Red/Chroma Bi-directional Control for VCR SCART (05H: D7, D5)
The 4703 supports the bi-directional Red/Chroma signal on the VCR SCART.
(CIO bit &
VCRC bit)
#15 pin
75
VCRC
pin
VCRRC
pin
0.1u
VCR SCART
(AK4703)
Figure 5. Red/Chroma Bi-directional Control
CIO bit VCRC bit State of VCRC pin
0
0
Hi-z (default)
0
1
Active
1
0
Connected to GND
1
1
Connected to GND
Table 9. Red/Chroma Bi-directional Control
Rev. 0.1
- 17 -
2004/03