[AK4706]
5. Monitor Options and INT function
■ Monitor Options (08H: D7, D5, D2-D0)
The AK4706 has several detection functions. SVCR1-0 bits, FVCR bit, VCMON bit and TVMON bit reflect the input
DC level of VCR slow blanking, the input DC level of VCR fast blanking and signals input to TVVIN or VCRVIN pins.
SDC bit: SCART-S1/S2 Control
0: SCART Fast/Slow Blanking Mode
1: S1/S2 Mode
SVCR1-0 bit: VCR Slow blanking status monitor
SVCR1-0 bits reflect the voltage at VCRSB pin only when the VCRSB pin is in the input mode.
When the VCRSB is in the output mode, SVCR1-0 hold previous value.
Input
Output
SDC bit
VCRSB pin input level
SVCR1 bit
SVCR0 bit
0
0
0
0
< 2V
4.5 to 7V
(Reserved)
9.5<
0
0
1
1
0
1
0
1
1
1
1
1
< 0.4V
1.4 to 2.4V
(Reserved)
3.5V<
0
0
1
1
0
1
0
1
Note: When SDC bit =”0”, VCRSB pin is connected to a Internal pull-down resistor(120kΩ@TYP).
Table 29. VCR Slow Blanking monitor
FVCR: VCR Fast blanking input level monitor
This bit is enabled when TVFB bit = “1”.
Input
Output
SDC bit
VCRFB pin input level
FVCR1 bit
FVCR0 bit
0
0
0
0
<0.4V
1 V<
(Reserved)
(Reserved)
0
0
0
0
0
1
0
0
1
1
1
1
< 0.4V
1.4 to 2.4V
(Reserved)
3.5V<
0
0
1
1
0
1
0
1
Table 30. VCR Fast Blanking monitor (Typical threshold is 0.7V)
MS0507-E-01
2010/09
- 35 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
