THS8200-EP Datasheet, PDF (22/104 Pages) Texas Instruments – All-Format Oversampled Component Video/PC Graphics D/A System With Three 11-Bit DACs, CGMS Data Insertion

THS8200-EP
SLES253 – DECEMBER 2009
www.ti.com
CLKIN
GY[9]
GY[8]
GY[7]
GY[6]
GY[5]
GY[4]
GY[3]
GY[2]
X
R7(0)
R6(0)
R5(0)
R4(0)
R3(0)
G7(0)
G6(0)
X
R7(1)
R6(1)
R5(1)
R4(1)
R3(1)
G7(1)
G6(1)
X
R7(2)
R6(2)
R5(2)
R4(2)
R3(2)
G7(2)
G6(2)
X
R7(3)
R6(3)
R5(3)
R4(3)
R3(3)
G7(3)
G6(3)
G7(0)
G6(0)
G5(0)
G4(0)
G3(0)
0
0
0
G7(1)
G6(1)
G5(1)
G4(1)
G3(1)
0
0
0
G7(2)
G6(2)
G5(2)
G4(2)
G3(2)
0
0
0
G7(3)
G6(3)
G5(3)
G4(3)
G3(3)
0
0
0
TO CH1
BCb[9]
BCb[8]
BCb[7]
BCb[6]
BCb[5]
BCb[4]
BCb[3]
BCb[2]
G5(0)
G4(0)
G3(0)
B7(0)
B6(0)
B5(0)
B4(0)
B3(0)
G5(1)
G4(1)
G3(1)
B7(1)
B6(1)
B5(1)
B4(1)
B3(1)
G5(2)
G4(2)
G3(2)
B7(2)
B6(2)
B5(2)
B4(2)
B3(2)
G5(3)
G4(3)
G3(3)
B7(3)
B6(3)
B5(3)
B4(3)
B3(3)
B7(0)
B6(0)
B5(0)
B4(0)
B3(0)
0
0
0
B7(1)
B6(1)
B5(1)
B4(1)
B3(1)
0
0
0
B7(2)
B6(2)
B5(2)
B4(2)
B3(2)
0
0
0
B7(3)
B6(3)
B5(3)
B4(3)
B3(3)
0
0
0
TO CH2
RCr[9]
X
X
X
X
RCr[8]
X
X
X
X
RCr[7]
X
X
X
X
RCr[6]
X
X
X
X
RCr[5]
X
X
X
X
RCr[4]
X
X
X
X
RCr[3]
X
X
X
X
RCr[2]
X
X
X
X
R7(0)
R6(0)
R5(0)
R4(0)
R3(0)
0
0
0
R7(1)
R6(1)
R5(1)
R4(1)
R3(1)
0
0
0
R7(2)
R6(2)
R5(2)
R4(2)
R3(2)
0
0
0
R7(3)
R6(3)
R5(3)
R4(3)
R3(3)
0
0
0
TO CH3
Figure 4-4. 15-Bit RGB 4:4:4 Data Format
CLKIN is equal to 1× the pixel clock. This format is only supported in VESA mode and can be used for
PC graphics applications that do not require full 8-bit resolution on each color component.
4.3 Clock Generator (CGEN)/Clock Driver (CDRV)
The clock generator/clock driver blocks generate all on-chip clocks for 4:2:2 to 4:4:4 and 2× video
oversampling. The DMAN setting controls whether the input data is 4:2:2 or 4:4:4 sampled, and whether a
30-, 20- or 10-bit interface is used. This selection affects the clock input frequency assumed to be present
on CLKIN.
• 30-bit 4:4:4: 1× pixel clock. 4:2:2 to 4:4:4 interpolation should be bypassed. Optional 2× oversampling
is available for formats with pixel clock up to 80 MHz.
22
Detailed Functional Description
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