TLC34075A Datasheet, PDF (33/53 Pages) Texas Instruments – Video Interface Palette Data Manual

Table 2–10. Test Register Bit Definitions for Analog Test
BIT DEFINITION
READ/WRITE
D7: Red select
R/W
D6: Green select
R/W
D5: Blue select
R/W
D4: 145-mV reference select
R/W
D3: Result
R
Table 2–11. D<7:4> Bit Coding for Analog Comparisons
D<7:4>
OPERATION
IF D3 = 1
IF D3 = 0
0000 Normal operation
Don’t care
Don’t care
1010 Red DAC compared to blue DAC
Red > blue
Red < blue
1001 Red DAC compared to 145-mV reference
Red > 145 mV
Red < 145 mV
0110 Green DAC compared to blue DAC
Green > blue
Green < blue
0101 Green DAC compared to 145-mV reference Green > 145 mV Green < 145 mV
NOTE: All the outputs have to be terminated to compare the voltage.
IOR or IOG
+
IOB or 145 mV
–
BLANK
(Internal Signal)
DQ
D3
C
Figure 2–12. Internal Comparator Circuitry for Analog Test
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