ch7005c Chrontel, ch7005c Datasheet - Page 9

• Manufacturer Part Number: ch7005c
• Description: Digital Pc To Tv Encoder With Macrovisiontm
• Manufacturer: Chrontel

CHRONTEL
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 9
shown below.
In this mode the S[7.0} contains the following data:
S[6]
S[5]
S[4]
Bits S[7] and S[3-0] are ignored.
201-0000-025 Rev. 2.9, 6/24/2004
Table 8. YCrCb Multiplexed Mode
Table 9. YCrCb Multiplexed Mode with Embedded Syncs
Pixel#
Bus Data
Pixel#
Bus Data
Format
Format
D[7:0]
IDF#
IDF#
HSYNC
POut/
XCLK
Pixel
Data
=
=
=
t
HD
F
V
H
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
Figure 6: Multiplexed Pixel Data Transfer Mode (IDF = 6)
t
=
=
=
HSW
P0a
Cb0[7]
Cb0[6]
Cb0[5]
Cb0[4]
Cb0[3]
Cb0[2]
Cb0[1]
Cb0[0]
P0a
FF
FF
FF
FF
FF
FF
FF
FF
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)
P0b
Y0[7]
Y0[6]
Y0[5]
Y0[4]
Y0[3]
Y0[2]
Y0[1]
Y0[0]
P0b
0
0
0
0
0
0
0
0
P1a
Cr0[7]
Cr0[6]
Cr0[5]
Cr0[4]
Cr0[3]
Cr0[2]
Cr0[1]
Cr0[0]
P1a
0
0
0
0
0
0
0
0
P0a
t
SP3
t
P3
P1b
Y1[7]
Y1[6]
Y1[5]
Y1[4]
Y1[3]
Y1[2]
Y1[1]
Y1[0]
P1b
S[7]
S[6]
S[5]
S[4]
S[3]
S[2]
S[1]
S[0]
P0b
YCrCb 8-bit
YCrCb 8-bit
9
9
P2a
P2a
Cb2[7]
Cb2[6]
Cb2[5]
Cb2[4]
Cb2[3]
Cb2[2]
Cb2[1]
Cb2[0]
Cb2[7]
Cb2[6]
Cb2[5]
Cb2[4]
Cb2[3]
Cb2[2]
Cb2[1]
Cb2[0]
P0c
t
t
PH3
HP3
P1a
P2b
Y2[7]
Y2[6]
Y2[5]
Y2[4]
Y2[3]
Y2[2]
Y2[1]
Y2[0]
P2b
Y2[7]
Y2[6]
Y2[5]
Y2[4]
Y2[3]
Y2[2]
Y2[1]
Y2[0]
P1b
P3a
Cr2[7]
Cr2[6]
Cr2[5]
Cr2[4]
Cr2[3]
Cr2[2]
Cr2[1]
Cr2[0]
P3a
Cr2[7]
Cr2[6]
Cr2[5]
Cr2[4]
Cr2[3]
Cr2[2]
Cr2[1]
Cr2[0]
CH7005C
P1c
P3b
Y3[7]
Y3[6]
Y3[5]
Y3[4]
Y3[3]
Y3[2]
Y3[1]
Y3[0]
P3b
Y3[7]
Y3[6]
Y3[5]
Y3[4]
Y3[3]
Y3[2]
Y3[1]
Y3[0]
9