
201-0000-025 Rev 2.1, 8/2/99
11
CHRONTEL
CH7005C
When IDF = 9 (YCrCb 8-bit mode), H and V sync signals can be embedded into the data stream. In this mode, the
embedded sync will follow the CCIR656 convention, and the first byte of the “video timing reference code” will be
assumed to occur when a Cb sample would occur if the video stream was continuous. This is delineated in
Table 8
shown below.
In this mode the S[7.0} contains the following data:
S[6]
=
F
=
S[5]
=
V
=
S[4]
=
H
=
1 during field 2, 0 during field 1
1 during field blanking, 0 elsewhere
1 during EAV (the synchronization reference at the end of active video)
0 during SAV (the synchronization reference at the start of active video)
Bits S[7] and S[3-0] are ignored.
Figure 6: Multiplexed Pixel Data Transfer Mode (IDF = 6)
Table 8. YCrCb Multiplexed Mode with Embedded Syncs
IDF#
Format
Pixel#
Bus Data
9
YCrCb 8-bit
P1b
S[7]
S[6]
S[5]
S[4]
S[3]
S[2]
S[1]
S[0]
P0a
FF
FF
FF
FF
FF
FF
FF
FF
P0b
0
0
0
0
0
0
0
0
P1a
0
0
0
0
0
0
0
0
P2a
Cb2[7]
Cb2[6]
Cb2[5]
Cb2[4]
Cb2[3]
Cb2[2]
Cb2[1]
Cb2[0]
P2b
Y2[7]
Y2[6]
Y2[5]
Y2[4]
Y2[3]
Y2[2]
Y2[1]
Y2[0]
P3a
Cr2[7]
Cr2[6]
Cr2[5]
Cr2[4]
Cr2[3]
Cr2[2]
Cr2[1]
Cr2[0]
P3b
Y3[7]
Y3[6]
Y3[5]
Y3[4]
Y3[3]
Y3[2]
Y3[1]
Y3[0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
Table 9. RGB 8-bit Multiplexed Mode (24-bit Color)
IDF#
Format
6
RGB 8-bit
Pixel#
Bus Data
P0a
B0[7]
B0[6]
B0[5]
B0[4]
B0[3]
B0[2]
B0[1]
B0[0]
P0b
G0[7]
G0[6]
G0[5]
G0[4]
G0[3]
G0[2]
G0[1]
G0[0]
P0c
R0[7]
R0[6]
R0[5]
R0[4]
R0[3]
R0[2]
R0[1]
R0[0]
P1a
B1[7]
B1[6]
B1[5]
B1[4]
B1[3]
B1[2]
B1[1]
B1[0]
P1b
G1[7]
G1[6]
G1[5]
G1[4]
G1[3]
G1[2]
G1[1]
G1[0]
P1c
R1[7]
R1[6]
R1[5]
R1[4]
R1[3]
R1[2]
R1[1]
R1[0]
P2a
B2[7]
B2[6]
B2[5]
B2[4]
B2[3]
B2[2]
B2[1]
B2[0]
P2b
G2[7]
G2[6]
G2[5]
G2[4]
G2[3]
G2[2]
G2[1]
G2[0]
P2c
R2(7)
R2(6)
R2(5)
R2(4)
R2(3)
R2(2)
R2(1)
R2(0)
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
t
HSW
Pixel
D[7:0]
POut/
XCLK
HSYNC
t
HD
P0a
P0b
P0c
P1a
P1b
P1c
t
PH3
t
P3
t
HP3
t
SP3