ak8823 AKM Semiconductor, Inc., ak8823 Datasheet - Page 37

• Manufacturer Part Number: ak8823
• Description: Hdtv & Ntsc/pal Multi-format Encoder Sdtv/hdtv X2 Oversampling 5ch Dacs
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
15-2. Signal Relations in EAV Decoding
( 1 ) EAV Synchronization ( HD )
EAV code which is encoded on input signal is decoded, and the device makes synchronization with its timing.
In 2 channel input case, synchronization is made with EAV of the Y7 ~ Y0 signal, and it is not referenced to the EAV / SAV
which are contained in CBCR7 ~ 0 signal.
EAV / SAV Codes
Those codes succeeding 0xFF ~ 0x00 ~ 0x00 which are fed as input data become EAV / SAV codes.
EAV /SAV codes have following meanings, starting with MSB.
Here,
But, in Progressive Output Modes 525p ( 480p ) / 720p, F-bit is always set to “ zero “.
V = 0 : other than Field Blanking ( V - Blanking )
V = 1 : Field Blanking ( V - Blanking )
H = 0 : SAV
H = 1 : EAV
P3, P2, P1, P0 : Protection bits. Those bits are ignored in the AK8823.
In 525i ( 480i ) / 625i ( 576i ) input cases
In 525p ( 480p ) / 625p ( 576p ) input cases
In 1080i input case
In 720pi input case
MS0549-E-02
Y port data
Y port data
No.(60Hz)
No.(50Hz)
No.(60Hz)
No.(50Hz)
Y port data
Y port data
No.(60Hz)
No.(50Hz)
No.(60Hz)
No.(50Hz)
WORD
Pixel
Pixel
Pixel
Pixel
Pixel
Pixel
Pixel
Pixel
TRS
TRS
0
1
2
3
Bit Number
F = 0 : Field 1
F = 1 : Field 2
VALUE
0xFF
0x00
0x00
0xxx
Cr359
Y718
1438
1438
1918
1918
1278
1278
718
718
Y
Y
Y719
Y719
1919
1919
1279
1279
1439
1439
719
719
Y
Y
MSB
7
1
0
0
1
0xFF
0xFF
0xFF
1280
1280
1920
1920
0xFF
1440
1440
720
720
F
6
1
0
0
0x00
1281
1281
1921
1921
0x00
0x00
0x00
1441
1441
721
721
EAV
EAV
EAV
EAV
0x00
1282
1282
1922
1922
0x00
0x00
1442
1442
722
722
0x00
V
5
1
0
0
0xXX
0xXX
0xXX
1923
1923
1283
1283
0xXX
723
723
1443
1443
37
H
4
1
0
0
……
……
……
……
P3
3
1
0
0
0xFF
2196
2636
0xFF
0xFF
0xFF
1646
1976
854
860
272
284
P2
0x00
2197
2637
0x00
2
1
0
0
0x00
0x00
1647
1977
855
861
273
285
SAV
SAV
SAV
SAV
0x00
2198
2638
1714
1716
0x00
0x00
856
862
0x00
1648
1978
P1
1
1
0
0
0xXX
0xXX
2199
2639
0xXX
1715
1727
0xXX
857
863
1649
1979
LSB
P0
0
1
0
0
Cb0
Y0
Y0
Y0
0
0
0
0
0
0
0
0
Y1
Y１
Y0
Y1
1
1
1
1
1
1
1
1
2006/10
[AK8823]
Cr0
Y2
Y２
2
2
Y2
2
2
2
2
2
2
Y3
Y1
Y３
3
3
3
3
Y3
3
3
3
3