AK8853XQ Datasheet, PDF (44/70 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8853XQ/ VN]
Output Format Register (R/W) [Sub Address 0x02], for output data format setting
Sub Address 0x02
bit 7
bit 6
VBIDEC1
VBIDEC0
Default Value
0
0
bit 5
SLLVL
0
bit 4
bit 3
TRSVSEL 601LIMIT
0
0
bit 2
VBIL2
0
Default Value : 0x00
bit 1
bit 0
VBIL1
VBIL0
0
0
Output Format Register Definition
Bit
Register
Name
R/W Definition
Vertical blanking interval length setting, entered as
difference from the default settings
The default settings are:
525-line: Lines1~ 19 and 263.5~282.5
625-line: Lines 623.5~22 and 311~335.5
bit 0 VBIL0
~
~
bit 2 VBIL2
Vertical Blanking Length R/W
Examples of lengthening and shortening:
If lengthened 1 line, the interval becomes
525-line: Lines1~20 and 263.5~283.5
625-line: Lines 623.5~23 and 311~336.5
If shortened 1 line, the interval becomes
525-line: Lines1~18 and 263.5~281.5
625-line: Lines 623.5~21 and 311~334.5
[VBIL2: VBIL0]
[001]: VBI lengthened 1 line
[010]: VBI lengthened 2 lines
[011]: VBI lengthened 3 lines
[000]: Default
[101]: VBI shortened 3 lines
[110]: VBI shortened 2 lines
[111]: VBI shortened 1 line
[100]: Reserved
Output data code limit (Min-Max) setting
bit 3 601LIMIT 601 Output Limit
R/W _{[0]: 1-254 (Y/Cb/Cr)}
[1]: 16-235 (Y) /16-240 (Cb/Cr)
Setting of lines for “Time reference signal” V-bit
value change in ITU-R BT.656 format
With 525-line input
Setting [0]: V=1 (lines 1~9 and 264~272)
bit 4
TRSVSEL
Time Reference Signal
V Select Bit
R/W
V=0 (lines 10~263 and 273~525)
Setting [1]: V=1 (lines 1~19 and 264~282)
V=0 (lines 20~263 and 283~525)
With 625-line input
Always (regardless of setting in this register):
V=1 (lines 1~22 and 311~335)
V=0 (lines 23~310 and 336~623)
Slice level setting
bit 5 SLLVL
Slice Level
R/W [0]: Slice level approx. 25 IRE
[1]: Slice level approx. 50 IRE
Setting for type of data output during interval set in
Vertical Blanking Interval register
bit 6 VBIDEC0
[ VBIDEC1: VBIDEC0 ]
~
~
VBI Decode
R/W [00]: Black level data output
bit 7 VBIDEC1
[01]: Monochrome data output
[10]: Slice result data output
[11]: Reserved
Rev-E-00
44
2008/01