參數(shù)資料
型號: TLC34076-170
廠商: Texas Instruments, Inc.
英文描述: Color-Palette(170MHz,與TLC34075兼容,另具24位和16位真彩色模式)
中文描述: 顏色調(diào)色板(170MHz的,與TLC34075兼容,另具24位和16位真彩色模式)
文件頁數(shù): 40/60頁
文件大小: 408K
代理商: TLC34076-170
2–23
Table 2–12. Test Register Bit Definitions for Analog Test
BIT DEFINITION
D7: Red select
D6: Green select
D5: Blue select
D4: 145-mV reference select
D3: Result
READ/WRITE
R/W
R/W
R/W
R/W
R
Table 2–13. D<7:4> Bit Coding for Analog Comparisons
OPERATION
Normal operation
Red DAC compared to blue DAC
Red DAC compared to 145-mV reference
Green DAC compared to blue DAC
Green DAC compared to 145-mV reference
NOTE: All outputs have to be terminated to compare the voltage.
D<7:4>
0000
1010
1001
0110
0101
IF D3 = 1
Don’t care
Red > blue
Red > 145 mV
Green > blue
Green > 145 mV
IF D3 = 0
Don’t care
Red < blue
Red < 145 mV
Green < blue
Green < 145 mV
+
IOR or IOG
IOB or 145 mV
BLANK
(internal signal)
D
C
D3
Q
Figure 2–12. Internal Comparator Circuitry for Analog Test
The result of the analog comparison is strobed into D3 at the falling edge of an internal signal derived from
the input BLANK signal. In order to have stable inputs to the comparator, the DAC should be set to a constant
level between syncs. For normal operation, data flow check, and screen integrity test, D<7:4> must be set
to zero.
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