Pin
No.
Symbol Pin voltage
19 ADR
Equivalent circuit
VCC
19
72k
28k
CXA2040AQ
Description
Selects the slave address for the
I2C bus.
90H at 1.0V or less
92H at 3.5V or more
90H when open
20 SCL
—
4k
20
×4
VCC
I2C bus signal input.
Connect protective resistor of
220Ω between this pin and the
SCL line.
21 SDA
—
4k
21
×6
VCC
I2C bus signal input.
Connect protective resistor of
220Ω between this pin and the
SDA line.
22 SYNCTC
VCC
1.2k
147
147
22
Sync tip clamp time constant for
Sync Separation.
Connect 68kΩ resistor between
this pin and VCC.
Connect 0.1µF capacitor between
this pin and GND.
1.2k
–4–