ch7028b Chrontel, ch7028b Datasheet - Page 13

• Manufacturer Part Number: ch7028b
• Description: Chrontel Ch7028b Sdtv Encoder
• Manufacturer: Chrontel

CHRONTEL
(PA,PB,PC represent the parts of one pixel data)
IDF[3:0] describes the major input data format that CH7028B accepts. They are: (Table 10)
Table 2 above describes the 18-bit input data format under unitary mode. For multiplexed input, input data need to be
de-multiplexed to unitary input first then this table can be applied. The Pixel Data bus represents a 12-bit or 8-bit
multiplexed data stream, which contains either RGB or YCrCb formatted data. The input data rate is 2X the pixel rate,
and each pair of Pn values (e.g. PA and PB) will contain a complete pixel. (3X input has the similar feature)
209-1000-001
IDF = 0: Multiplexed 888 RGB input
IDF = 1: Multiplexed 666 RGB input
IDF = 2: Multiplexed 565 RGB input
IDF = 3: Multiplexed 555 RGB input
IDF = 4: DVO input
IDF = 5: 8-bit YCbCr4:2:2 input
IDF = 6: 10-bit YCbCr4:2:2 input
IDF = 7: 8-bit YCbCr4:4:4 input
IDF = 8: Reserved
IDF = 9: 666 RGB input
IDF = 10: 565 RGB input
IDF = 11: 555 RGB input
Table 3: Input Data Format
MULTI
1
2
0
Rev. 1.1,
PA
PB
PA
PB
PA
PB
PA
PB
PA
PB
PA
PB
PA
PB
PA
PB
PA
PB
PC
PA
PB
PC
IDF
10
11
5
9
0
1
2
3
4
5
6
7
0
7
08/21/2008
6'h00, R[5:4]
D[17:16]
8'h00
8'h00
8'h00
1'b0, R[4:0],G[4:3]
4’h0, G[4:2], [7]
R[3:0],G[5:2]
R[4:0],G[5:3]
6’h00, Y[9:8]
6’h00, C[9:8]
4’h0, Cb[3:0]
4’h0, R[7:4]
4’h0, G[3:0]
4’h0, R[7:4]
4’h0, Y[7:4]
7’h00, G[2]
7’h00, R[5]
D[15:8]
Y[7:0]
R[3],G[7:5],R[2:0],G[1]
1’b0,R[4:0],G[4,3]
B[6:3],G[0],B[2:0]
Y[3:0],Cb[7:4]
G[1:0],B[5:0]
G[2:0],B[4:0]
G[2:0],B[4:0]
R[3:0],G[7:4]
R[4:0],G[5,3]
G[1:0],B[5:0]
R[4:0],G[5,3]
G[2:0],B[4:0]
G[2:0],B[4:0]
Cb[7:0]
Cr[7:0]
Cr[7:0]
D[7:0]
C[7:0]
B[7:0]
Y[7:0]
C[7:0]
Y[7:0]
C[7:0]
R[7:0]
G[7:0]
B[7:0]
Y[7:0]
CH7028B
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