AK8859VQ Datasheet, PDF (25/73 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

* (mV)
NTSC/PAL
601 Code
714/700 235
357/350 127
180/175 ⁶³
[AK8859VQ]
100% White
50IRE threshold with setting
SLLVL=[1]
25IRE threshold with setting
SLLVL=[0]
L L _{````</sub> L L H H <sub>````} H H
`````
Cb/Y <sub>``````</sub> Cr/Y
Cb/Y <sub>``````</sub> Cr/Y
*Threshold values (mV) are approximate
L:
Value set by
Set Register
Low
Slice
Data
H:
Value set by
Set Register
High
Slice
Data
L
```````
High/Low conversion is performed for either the Cb/Y or the Cr/Y combination. The above figure is an
example of the conversion points for Cb/Y.
[7.11.] VBI period decode data
The AK8859VQ decode data during VBI period can be selected via register.
Settings for decode data in the VBI period
Sub Address: 0x04 [7:6]
Name
Setting
Decode data
value
Notes
[00]
Black level output
Y = 0x10
Cb/Cr = 0x80
VBIDEC0 _[01]
~
VBIDEC1 _[10]
Monochrome mode
Sliced data output
Y = data converted to 601 level
Cb/Cr = 0x80
Y/Cb/Cr = value corresponding to slice level
(Value set at Hi/Low Slice Data Set Register)
[11]
Reserved
Reserved
Note: (525i) Lne1～Line9 and Line263.5～Line272.5
(625i) Line623.5～Line6.5 and Line311～Line388
During the above period, these values are unaffected by the VBIDEC[1:0]-bits setting.
The output code during this period is black level code (Y=0x10, Cb/Cr=0x80).
MS1178-E-00
AKM Confidential
- 25 -
2010/04