THC7984_15 Datasheet, PDF (22/46 Pages) THine Electronics, Inc. – 10-bit 3-channel Video Signal Digitizer

THC7984_Rev.2.0_E
R12[4] Reserved * Must be set to 0 (Default Value: 0)
R12[3] Input Port Select
0: Port-0 is selected.
Port-0: HSYNC0, VSYNC0, RAIN0, GAIN0, SOGIN0, BAIN0
1: Port-1 is selected.
Port-1: HSYNC1, VSYNC1, RAIN1, GAIN1, SOGIN1, BAIN1
R12[2] Input Sync Type Automatic Select Enable
1: Input Sync Type Select (R12[1:0]) is automatically set.
When Automatic Select is enabled, Input Sync Type Select is determined by sync processor based on the result of Input
Sync Type Detection(R2C[6:5]/R2C[4:3]/R2C[0]) .
R12[1:0] Input Sync Type Select
Select the input sync type.
The combination of Input Port Select (R12[3]) and Input Sync Type Select (R12[1:0]) determines the input pin for
HSYNC and VSYNC.
R12[3]
0
0
0
0
1
1
1
1
Input Port
Port-0
Port-0
< Input Port / Sync Type >
R 1 2 [1 :0 ]
Sync Type
HSYNC
Input Pin
00b
Separate Sync HSYNC0
01b
Composite Sync HSYNC0
Port-0
10b
Sync on Video
(2 - le v e l)
S O G IN 0
Port-0
Port-1
Port-1
Port-1
11b
Sync on Video
(3 - le v e l)
S O G IN 0 *
00b
Separate Sync HSYNC1
01b
Composite Sync HSYNC1
10b
Sync on Video
(2 - le v e l)
S O G IN 1
Port-1
11b
Sync on Video
(3 - le v e l)
S O G IN 1 *
VSYNC
Input Pin
VSYNC0
HSYNC0
S O G IN 0
S O G IN 0 *
VSYNC1
HSYNC1
S O G IN 1
S O G IN 1 *
*3-level sliced (pedestal slice) .
R13[6] HSYNC Input, VSYNC Input Polarity Automatic Select Enable
1: HSYNC Input Polarity (R13[5]) and VSYNC Input Polarity (R13[4]) are automatically set.
When Automatic Select is enabled, the sync input polarity is determined by sync processor based on the result of
HSYNC Input Polarity Detection (R2C[1]) and VSYNC Input Polarity Detection (R2C[2]) .
R13[5] HSYNC Input Polarity
HSYNC Input Polarity must be correctly set for normal operation.
Set to 0 when the input polarity is Active-Low.
Set to 1 when the input polarity is Active-High.
* Set to 0 when Input Sync Type Select is set to “Sync on Video (3-level) ” (R12[1:0]=11b) .
R13[4] VSYNC Input Polarity
VSYNC Input Polarity must be correctly set for normal operation.
Set to 0 when the input polarity is Active-Low.
Set to 1 when the input polarity is Active-High.
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