Changhong Electric PT4216 Service Manual page 18

● IIC interface control: slave address:90h,92h or 94h(up to three devices can be used simultaneously,selected by ADS
input); data transfer rate: fast mode(up to 400kbps)
● Cutoff frequency:4.8 to 43MHz variable
SM5302AS Internal Diagram：
Pin Description：
Pin Name
1 REF1
2 VDD
3 SDA
4 SCL
5 Vss
6 MUXSEL
7 ADS
8 IN1A
9 IN1B
10 ISET
11 IN2A
12 IN2B
13 IN3A
14 IN3B
Description
Internal reference voltage 1
Digital supply(3.0~5.5V).
IIC data signal input/output
IIC clock signal input
Digital ground
Input multiplexer switch control
IIC slave address select(three state input)
Video signal input 1(CH-1, input A)
Video signal input 1(CH-1, input B)
Internal current-setting resistor(Riset) connection(1.8K Ω )
Video signal input 1(CH-2, input A)
Video signal input 1(CH-2, input B)
Video signal input 1(CH-3, input A)
Video signal input 1(CH-3, input B)
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