Video Switch Matrix
®
STV6688
Video Switch Matrix for TV Applications with S Terminal
PRODUCT PREVIEW
Key Features
s I²C Bus Control s Sta...
Description
®
STV6688
Video Switch Matrix for TV Applications with S Terminal
PRODUCT PREVIEW
Key Features
s I²C Bus Control s Standby Mode s 4 Y/CVBS Inputs (one for internal TV signal) s 4 C Inputs (one for internal TV signal) s 1 Y/C Adder s 1 Y/CVBS and 1 C Output, each with 0 dB gain s 1 CVBS Output with 6 dB gain and 150 Ω Buffer for Monitor s SYNC Bottom Clamp on all CVBS/Y and Average Bias on C Inputs s Bandwidth: 15 MHz s Crosstalk: 50 dB (min.) PSO20 Order Code: STV6688A Order Code: STV6688 PDIP20
General Description
The STV6688 is a highly-integrated I²C buscontrolled video switch matrix, optimized for use in color TV applications. It is used to control the switching of 4 video signals. These signals can be in Single Component form (CVBS) or in Two Component form (Y/C). In both cases, the STV6688 microcontroller provides a CVBS signal for an external device (monitor).
Pin Connections
Y/CVBS_IN1 C_IN1 VCC_V Y/CVBS_IN2 C_IN2 GND_V Y/CVBS_IN3 C_IN3 VDD SDA
1 2 3 4 5 6
20 19 18 17 16 15 14 13 12 11
DEC Y/CVBS_IN_TV C_IN_TV VCC_B CVBS_OUT GND_B Y/CVBS_OUT C_OUT GND SCL
7
8 9 10
September 2003
This is preliminary information on a new product now in development. Details are subject to change without notice.
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Functional Description
STV6688
1
Functional Description
Table 1: Pin List
Pin
1 2 3 4 5 6 7 8 9 10
Symbol
Y/CVBS_IN1 C_IN1 VCC_V Y/CVBS_IN2 C_IN2 GND_V Y/CVBS_IN3 C_IN3 VDD SDA
Description
Y or CVBS Signal of Ext. Input 1 C Signal of Ext. Input 1 Video Switch...
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