AK8856 Datasheet, PDF (59/105 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Decoder

ASAHI KASEI
[ AK8856 ]
The relationship of HD/VD/DVALID is illustrated here. (The polarity of HD/VD/DVALID can be changed by setting
the register)
NTSC Register Set : VLF = 1’b0, OIF[1:0] = 2’b10
Line # 3 4 5 6 7 … 21 22 23 24 25 26 27 28 29 30 31 … 258 259 260 261 262 263 264 265
HD/HV
(Excep CIF)
HD(CIF)
VD
VDALID
(QVGA)
VAF
(QVGA)
VDALID
(VGA)
VAF
(VGA)
VDALID
(CIF)
VAF
(CIF)
VDALID
(QCIF)
VAF
(CIF)
VDALID
(QVGAL)
VAF
(QVGAL)
VDALID
(CIFL)
VAF
(CIFL)
VDALID
(601)
VAF
(601)
Note: For output modes other than VGA or 601, the DVALID signal becomes active (low) for either ODD or
EVEN timing. QVGAL: Rotated QVGA, CIFL: Rotated CIF
Rev-01
59
2007/03