CXA7002R Datasheet, PDF (30/47 Pages) Sony Corporation – I2C Bus Compatible Audio Video (AV) Switch & Electronic Volume Control

CXA7002R
Logic and Interrupt Output Pins
These two pins are open collector type and require an external pull-up resistor.
Interrupt Output
The interrupt pin will become a current sink for approximately 1µs when the VCR input function line changes
from:
a) 0 to 6V, 6 to 0V b) 0 to 12V, 12 to 0V c) 6 to 12V, 12 to 6V
OR
When the sync detector detects that a valid video signal has been added or removed.
This pin will normally be connected to +5V through a 10kΩ resistor.
Multiple interrupt signal may be generated for signals on the threshold of having a valid sync.
Logic Output
The logic output level can be changed using the logic output bit in the I²C register, "LOGIC_LEVEL".
"LOGIC LEVEL" [Data 3 Bit 3]
xxxxx0xx = Current sink mode resulting in < 0.4V saturation voltage on logic pin. (default)
xxxxx1xx = Open collector/high output impedance on logic pin.
Imax during current sink = 1mA
+3 to +5V
External resistors
10k
10k
To Micro
1µs
INT
LOGIC
Fig. 8. INT and Logic Line Interface
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