JVC Model 200 - Manual (Page 35)

Chapter 2---System Description
• Tint, sharpness, and color adjustment
• LED indication of Composite or S-video
• IIC serial bus interface
R
G
B
/H
/SELECT
Comp
Y in
C in
IIC_CLK
IIC_DATA
+5.1V
+15V
B2
B4
B6
B8
B12
B13
A13
B16
B15
Pin callouts are to P12, P14,
or P18, depending on which
VIC slot is being used.
/V
B10
Figure 2-9. Quad Standard Decoder I/O Diagram.
LED Indication
There are two LEDs on this VIC. The LED on the right side of the
board glows when Composite Video is selected and the LED on
the left glows when S-Video is selected. Only one LED can light at
one time.
IIC Interface
The Quad Standard Decoder VIC is controlled by the serial bus
interface. The IIC bus comes from the System Controller Board
through the Backplane Board. All required adjustments for this
board are provided via the IIC serial bus interface. The information
transferred over the IIC bus is indicated below (I = input to
YPbPr_VIC, and O = output of YPbPr_VIC). The selection of this
VIC is accomplished through the IIC control bus which provides
the /SEL_VIC signal.
Table 2-4. Quad Standard Decoder VIC IIC Interface
I/O Information Description
I SOURCE Selects input source (Composite Video or S-
Video)
I STANDARD Selects signal standard
(AUTO/NTSC/PAL/SECAM/4.43NTSC)
Model 200 Service Manual 2-21