AK4703 Datasheet, PDF (31/38 Pages) Asahi Kasei Microsystems – AV SCART switch

ASAHI KASEI
AKM CONFIDENTIAL
[AK4703]
Addr Register Name
D7
08H SB/FB monitor
0
R/W
Default
0
D6
D5
D4
D3
D2
D1
D0
0
0 TVMON VCMON FVCR SVCR1 SVCR0
READ
0
0
0
0
0
0
0
SVCR1-0: VCR Slow blanking status monitor
SVCR1-0 bits reflect the voltage at VCRSB pin only when the VCRSB is in the input mode.
When the VCRSB is in the output mode, SVCR1-0 bits hold previous value.
VCRSB pin input level SVCR1 bit SVCR0 bit
< 2V
0
0
4.5 to 7V
(Reserved)
0
1
1
0
9.5 <
1
1
Table 19. VCR Slow Blanking monitor
FVCR: VCR Fast blanking input level monitor
This bit is enabled when TVFB bit = “1”.
VCRFB pin input level FVCR bit
< 0.4V
0
1V <
1
Table 20. VCR Fast Blanking monitor (Typical threshold is 0.7V)
VCMON: VCR input monitor
0: No video signal detected via VCRVIN pin.
1: Detects video signal via VCRVIN pin.
TVMON: TV input monitor
0: No video signal detected via TVVIN pin.
1: Detects video signal via TVVIN pin.
Rev. 0.1
- 31 -
2004/03