AK8851 Datasheet, PDF (38/80 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

ASAHI KASEI
[AK8851]
Read Operation of WSS Data :
When the WSSRQ-bit = “1”, the AK8851 is put into a wait state for the WSS data decoding. Data is decoded as data is
received, and after the decoding is completed, ”1” is sent back to WSS-bit of [Status 2 Register]. WSS-bit is at “1” right
after the reset (it becomes “0” by writing “1” at WSSRQ-bit).
The decoded data is written into [WSS 1 Register](R)[Sub Address0x1C] and [WSS 2 Register](R)[Sub Address 0x1D].
Data in [WSS 1 Register] and [WSS 2 Register] are maintained until they are over-written.
[WSS1 Register] (R) [Sub Address 0x1C]
bit 7
bit 6
bit 5
G2-7
G2-6
G2-5
[WSS 2 Register] (R) [Sub Address 0x1D]
bit 7
bit 6
bit 5
Reserved Reserved
G4-13
bit 4
G2-4
bit 4
G4-12
bit 3
G1-3
bit 3
G4-11
bit 2
G1-2
bit 2
G3-10
bit 1
G1-1
bit 1
G3-9
bit 0
G1-0
bit 0
G3-8
MS0244-E-03
38
Confidential
2005 / 07