AK8859VN Datasheet, PDF (23/72 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8859VN]
[7.9.] V-bit
In the AK8859VN, the settings for V-bit handling in ITU-R BT.656 format are as follows.
Setting for V-bit handling in ITU-R BT.656 format
Sub Address: 0x04 [4]
Name
Setting value
525-line
V-bit=0
V-bit=1
625-line
V-bit=0
V-bit=1
TRSVSEL
[0]
BT. 656-3
[1]
BT. 656-4 and
SMPTE125M
Line10~Line263
Line273~Line525
Line20~Line263
Line283~Line525
Line1~Line9
Line264~Line272
Line1~Line19
Line264~Line282
Line23~Line310
Line336~Line623
Line1~Line22
Line311~Line335
Line624~Line625
These values are unaffected by the VBIL[2:0]-bit setting.
[7.10.] Slice function
The results of VBI slicing by the AK8859VN slicing function are output as ITU-R BT.601 digital data. The
VBI interval is set via VBIL[2:0]-bits. VBI slicing is performed in the luminance in the luminance signal
processing path, so that the Cb/Cr value of the effective line 601 output code is output at the same level as
the corresponding luminance signal.
Setting for slice level
Name
Definition
SLLVL
[0]: 25IRE
[1]: 50IRE
Sub Address: 0x04 [5]
Hi/Low Slice Data Set Register of output data, as follows.
Setting for higher of two values resulting from slicing
Sub Address: 0x11
Name
Definition
H0
Default: 0xEB(235)
~
H7
Note that a setting of 0x00 or 0xFF corresponds to a special 601 code.
Setting for lower of two values resulting from slicing
Sub Address: 0x12
Name
Definition
L0
Default: 0x10(16)
~
L7
Note that a setting of 0x00 or 0xFF corresponds to a special 601 code.
MS1179-E-00
AKM Confidential
- 23 -
2010/04