CH7003B Datasheet, PDF (7/50 Pages) List of Unclassifed Manufacturers – Digital PC to TV Encoder

CHRONTEL
CH7003B
Digital Video Interface (continued)
Non-multiplexed Mode
In the 15/16-bit mode shown in Figure 4, the pixel data bus represents a 15/16-bit non-multiplexed data stream,
which contains either RGB or YCrCb formatted data. When operating in RGB mode, each 15/16-bit Pn value will
contain a complete pixel encoded in either 5-6-5 or 5-5-5 format. When operating in YCrCb mode, each 16-bit Pn
word will contain an 8-bit Y (luminance) value on the upper 8 bits, and an 8-bit C (color difference) value on the
lower 8 bits. The color difference will be transmitted at half the data rate of the luminance data, with the sequence
being set as Cb followed by Cr. The Cb and Cr data will be co-sited with the Y value transmitted with the Cb value,
with the data sequence described in Table 3. The first active pixel is SAV pixels after the leading edge of horizontal
sync, where SAV is a bus-controlled register.
HSYNC
t_HD
POut/
XCLK
Pixel
Data
t_HSW
SAAVVR
t^t_PP1
t_{PHH 1}
t_{tSSPP1tHtHP P1}
P_P0₀a P_P0₁b P_P1₂a P_P1₃b P_P2₄a PP25b
Figure 4: Non-multiplexed Data Transfers
Table 3. 15/16-bit Non-multiplexed Data Formats
IDF#
Format
0
RGB 5-6-5
3
RGB 5-5-5
Pixel#
Bus Data
D[15]
D[14]
D[13]
D[12]
D[11]
D[10]
D[9]
D[8]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
P0
R0[4]
R0[3]
R0[2]
R0[1]
R0[0]
G0[5]
G0[4]
G0[3]
G0[2]
G0[1]
G0[0]
B0[4]
B0[3]
B0[2]
B0[1]
B0[0]
P1
R1[4]
R1[3]
R1[2]
R1[1]
R1[0]
G1[5]
G1[4]
G1[3]
G1[2]
G1[1]
G1[0]
B1[4]
B1[3]
B1[2]
B1[1]
B1[0]
P0
x
R2[4]
R2[3]
R2[2]
R2[1]
R2[0]
G2[4]
G2[3]
G2[2]
G2[1]
G2[0]
B2[4]
B2[3]
B2[2]
B2[1]
B2[0]
P1
x
R3[4]
R3[3]
R3[2]
R3[1]
R3[0]
G3[4]
G3[3]
G3[2]
G3[1]
G3[0]
B3[4]
B3[3]
B3[2]
B3[1]
B3[0]
P0
Y0[7]
Y0[6]
Y0[5]
Y0[4]
Y0[3]
Y0[2]
Y0[1]
Y0[0]
Cb0[7]
Cb0[6]
Cb0[5]
Cb0[4]
Cb0[3]
Cb0[2]
Cb0[1]
Cb0[0]
1
YCrCb (16-bit)
P1
Y1[7]
Y1[6]
Y1[5]
Y1[4]
Y1[3]
Y1[2]
Y1[1]
Y1[0]
Cr0[7]
Cr0[6]
Cr0[5]
Cr0[4]
Cr0[3]
Cr0[2]
Cr0[1]
Cr0[0]
P2
Y2[7]
Y2[6]
Y2[5]
Y2[4]
Y2[3]
Y2[2]
Y2[1]
Y2[0]
Cb2[7]
Cb2[6]
Cb2[5]
Cb2[4]
Cb2[3]
Cb2[2]
Cb2[1]
Cb2[0]
P3
Y3[7]
Y3[6]
Y3[5]
Y3[4]
Y3[3]
Y3[2]
Y3[1]
Y3[0]
Cr2[7]
Cr2[6]
Cr2[5]
Cr2[4]
Cr2[3]
Cr2[2]
Cr2[1]
Cr2[0]
201-0000-023 Rev 4.1, 8/2/99
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