AK8811 Datasheet, PDF (32/36 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Encoder

ASAHI KASEI
[AK8811/12]
Followings are read only register
STATUS REGISTER (R only)
Sub Add _bit7
bit6
bit5
24H ^{Reserved Reserved} EN284
bit4
EN21
bit3
SYNC
bit2
STS2
bit1
STS1
bit0
STS 0
Symbol
EN284
EN21
SYNC
STS2 - STS 0
Value
0
1
0
1
0
1
***
Description
Wait for the appointed video line to encode.
Ready for the C.C. data input to the register.
Wait for the appointed video line to encode.
Ready for the C.C. data input to the register.
Missing synchronization in slave mode.
Synchronization was achieved.
Shows the processing field No.
• Status Register becomes effective when SYNC bit turns to “1”. When in master mode
operation, this bit is ”1”.
• STS2-STS2 holds the field number of processing. Some time lag is inevitable for the I²C
acquisition.
• Closed caption data should be renewed after firm that the EN* flag is “1”. EN* flag bit is
cleared after the second byte( Sub address 17H,19H) was accessed.
• Reserved-bit is always value 0.
Device ID (R only default 21H)
Sub Add _bit7
bit6
bit5
bit4
Bit3
bit2
bit1
bit0
25H
0
0
0
1
0
0
0
1
• Represents device ID. AK8811 is assigned 11H.
Sub Add _bit7
bit6
bit5
bit4
Bit3
bit2
bit1
bit0
25H
0
0
0
1
0
0
1
0
• Represents device ID. AK8811/12 is assigned 12H.
Device REV (R only default 01H)
Sub Add _bit7
bit6
bit5
bit4
Bit3
bit2
bit1
bit0
26H
0
0
0
0
0
0
0
1
• Represents device revision. Initial is 01H.
Rev.1.1
32
2000/01