AK4706_10 Datasheet, PDF (35/54 Pages) Asahi Kasei Microsystems – 2ch 24bit DAC with AV Switch & HD/SD Video Filter

[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.
SDC bit
Input
VCRSB pin input level
Output
SVCR1 bit
SVCR0 bit
0
< 2V
0
4.5 to 7V
0
(Reserved)
0
9.5<
0
0
0
1
1
0
1
1
1
< 0.4V
1
1.4 to 2.4V
1
(Reserved)
1
3.5V<
0
0
0
1
1
0
1
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”.
SDC bit
0
0
0
0
1
1
1
1
Input
VCRFB pin input level
<0.4V
1 V<
(Reserved)
(Reserved)
< 0.4V
1.4 to 2.4V
(Reserved)
3.5V<
Output
FVCR1 bit
0
0
0
0
0
0
1
1
FVCR0 bit
0
1
0
0
0
1
0
1
Table 30. VCR Fast Blanking monitor (Typical threshold is 0.7V)
MS0507-E-01
- 35 -
2010/09