
Chapter 5---Electronics
Figure 5-38 YPbPr VIC faceplate.
YPbPr VIC - Inputs
YPbPr Inputs
Y - green image input with composite horizontal and vertical sync
Pr - red image input for YPbPr
GBR Inputs
Grn - green image input with composite horizontal and vertical sync
Red - red image input
+15 V - power for analog circuitry
IIC CLK - IIC clock line
IIC DATA - IIC data line
IIC SINT - IIC interrupt line
YPbPr VIC - Outputs
RED_VIC - red image to Video Processor PCB
GRN_VIC - green image to signal Video Processor PCB
BLU_VIC - blue image to Video Processor PCB
SYNC - composite horizontal and vertical sync to Video Processor PCB.
/SEL_VIC - VIC select line to Video Processor PCB.
YPbPr VIC - Operation
This VIC accepts two input signal formats, YPbPr and GBR signals. The YPbPr VIC converts either input signal format to the RGB format. The selection of the VIC and inputs is controlled by the System Controller Board via the IIC serial bus
Model 250 Service Manual |