JVC Model 200 Overlay, Redover, Grnover, Bluover, Blusens, Grnsens, Redsens, Valid, Oddfield

		Chapter 2---System Description
IIC_DATA	IIC data line. Serial line for synchronous data transfer of the following
	data between Video Processor Board and SCB board. I=Input,
	O=Output.
	I	BEAM CURRENT
	I	OK DETECT
	O	RED_CONT
	O	GRN_CONT
	O	BLU_CONT
	O	BRIGHTNESS
	O	RED_G2
	O	BLU_G2
	O	GRN_G2
	O	WHT_BOOST
	O	BLK_BOOST
OUTPUTS	DESCRIPTION
OVERLAY	Overlay control signal
/IIC_INT	IIC interrupt line.
RED_OVER	Red signal of on-screen menu and/or internal test pattern
GRN_OVER	Similar to RED_OVER
BLU_OVER	Similar to RED_OVER
BLU_THRES	Threshold correction information for blue. Real time data at 0 volt to
	1 volt.
GRN_THRES	Similar to BLU_THRES
RED_THRES	Similar to BLU_THRES
BLU_SENS	Sensitivity correction information for BLU. Real time data at O volt to
	1 volt.
GRN_SENS	Similar to BLU_SENS
RED_SENS	Similar to BLU_SENS
		Raster Timing Generator
INPUTS	DESCRIPTION
SOURCE_	This signal indicates a new source (or valid). A high indicates a valid
VALID	stable signal and low indicates change in input signal.
ODD_FIELD	Square wave with 50 % duty cycle which is low during the odd field
	of an interlace signal. This signal is high for noninterlaced signals.
280_CLK	Square wave signal, 50 % duty cycle, 280 times the frequency of
	horizontal sync. This clock is synchronized to the horizontal sync.

2-36 Model 200 Service Manual