AK8859VQ Datasheet, PDF (23/73 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8859VQ]
[7.7.] VBI blanking interval data output
In the AK8859VQ, the settings for the output code and vertical blanking intervals for the output signal are as
follows.
Setting vertical blanking intervals (VBLANK)
Name
Setting
value
525/625
Vertical blanking interval
Sub Address: 0x04 [2:0]
Notes
525
[001]
625
Line1~Line20 及び Line263.5~Line283.5
Line623.5~Line24.5 及び Line311~Line336
+1Line
525
[010]
625
Line1~Line21 及び Line263.5~Line284.5
Line623.5~Line25.5 及び Line311~Line337
+2Lines
525
[011]
625
Line1~Line22 及び Line263.5~Line285.5
Line623.5~Line26.5 及び Line311~Line338
+3Lines
VBIL0 _[000]
525
~
625
VBIL2
525
[101]
625
Line1~Line19 及び Line263.5~Line282.5
Line623.5~Line23.5 及び Line311~Line335
Line1~Line16 及び Line263.5~Line279.5
Line623.5~Line20.5 及び Line311~Line332
default
-3Lines
525
[110]
625
Line1~Line17 及び Line263.5~Line280.5
Line623.5~Line21.5 及び Line311~Line333
-2Lines
525
[111]
625
Line1~Line18 及び Line263.5~Line281.5
Line623.5~Line22.5 及び Line311~Line334
-1Line
[100] Reserved
Reserved
As indicated in this table, the default values are:
(525i) Line1~Line19 and Line263.5~Line282.5
(625i) Line623.5~Line23.5 and Line311~Line335
The other specific values are set by entering the difference from these default values.
[7.8.] Output data code Min/Max
The AK8859VQ data code output format (Y:Cb:Cr=4:2:2) is compliant with ITU-R BT.601.
All internal calculating operations are made with Min = 1, Max = 254.
With LIMIT601-bit set to [1], codes 1~15 and 236~254 are respectively clipped to 16, 235.
Setting for output data code Min/Max
Name
Setting value Output data code Min.~Max.
[0]
LIMIT601
[1]
Y: 1~254
Cb, Cr: 1~254
Y: 16~235
Cb, Cr: 16~240
Sub Address: 0x04 [3]
Notes
Default
In case of LIMIT601=[0] and EAVSAVN-bit=[1]*, the output code Min/Max is 0～255.
*Sub Address: 0x08 [2]
MS1178-E-00
AKM Confidential
- 23 -
2010/04