SAA6721E Datasheet, PDF (16/72 Pages) NXP Semiconductors – SXGA RGB to TFT graphics engine

Philips Semiconductors
SXGA RGB to TFT graphics engine
Preliminary specification
SAA6721E
Table 2 YUV input formats
SIGNAL
4 : 1 : 1 FORMAT
4 : 2 : 2 FORMAT
CCIR 656
Y7
Y07
Y17
Y27
Y37
Y07
Y17
U07
Y07
V07
Y17
Y6
Y06
Y16
Y26
Y36
Y06
Y16
U06
Y06
V06
Y16
Y5
Y05
Y15
Y25
Y35
Y05
Y15
U05
Y05
V05
Y15
Y4
Y04
Y14
Y24
Y34
Y04
Y14
U04
Y04
V04
Y14
Y3
Y03
Y13
Y23
Y33
Y03
Y13
U03
Y03
V03
Y13
Y2
Y02
Y12
Y22
Y32
Y02
Y12
U02
Y02
V02
Y12
Y1
Y01
Y11
Y21
Y31
Y01
Y11
U01
Y01
V01
Y11
Y0
Y00
Y10
Y20
Y30
Y00
Y10
U00
Y00
V00
Y10
UV7
U07
U05
U03
U01
U07
V07
X
X
X
X
UV6
U06
U04
U02
U00
U06
V06
X
X
X
X
UV5
V07
V05
V03
V01
U05
V05
X
X
X
X
UV4
V06
V04
V02
V00
U04
V04
X
X
X
X
UV3
X
X
X
X
U03
V03
X
X
X
X
UV2
X
X
X
X
U02
V02
X
X
X
X
UV1
X
X
X
X
U01
V01
X
X
X
X
UV0
X
X
X
X
U00
V00
X
X
X
X
Data frequency
1_⁄2VCLK
1_⁄2VCLK
VCLK
For YUV 4 : 4 : 4 the Y, U, and V components are available
in parallel.
If non-interlaced video data is applied, it is treated as odd
fields. Interlaced video data is sampled odd field,
even field, odd field, even field, etc. If there are equal
subsequent frames, only the first of these frames will be
sampled. The decoding of odd and even fields is done with
HREF. In CCIR 656 data streams the included codes are
used for identifying even and odd frames, blanking and
active video data. The codes start with the byte sequence
FF 00 00, followed by the reference code byte;
see Figs 6 and 7.
handbook, full pagewidth
VCLK
Y7 to Y0 XX FF
00
00
SAV
U0
Y0
V0
Y1
...
MHB246
Fig.6 CCIR 656 SAV code.
handbook, full pagewidth
VCLK
Y7 to Y0 ... U718 Y718 V718 Y719 FF
00
00
EAV
XX
MHB247
Fig.7 CCIR 656 EAV code.
1999 May 11
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