ch7009b Chrontel, ch7009b Datasheet - Page 15

• Manufacturer Part Number: ch7009b
• Description: Ch7009 Dvi / Tv Output Device
• Manufacturer: Chrontel

CHRONTEL
When IDF = 4 (YCrCb mode), the data inputs can also be used to transmit sync information to the device. In this mode,
the embedded sync will follow the VIP2 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 shown below:
I n this mode, the S[7..0] byte contains the following data:
S[6]
S[5]
S[4]
Bits S[7] and S[3..0] are ignored.
201-0000-035 Rev 3.31, 11/4/2004
Table 7. Embedded Sync
IDF =
Format =
Pixel #
Bus Data
=
=
=
Dx[7]
Dx[6]
Dx[5]
Dx[4]
Dx[3]
Dx[2]
Dx[1]
Dx[0]
F
V
H
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 (synchronization reference at the end of active video)
0 during SAV (synchronization reference at the start of active video)
P0b
00
00
00
00
00
00
00
00
P1a
00
00
00
00
00
00
00
00
P1b
S[7]
S[6]
S[5]
S[4]
S[3]
S[2]
S[1]
S[0]
YCrCb 8-bit
4
Cb2[7]
P2a
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]
CH7009B
P3b
Y3[7]
Y3[6]
Y3[5]
Y3[4]
Y3[3]
Y3[2]
Y3[1]
Y3[0]
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