AK8854VQ Datasheet, PDF (89/95 Pages) Asahi Kasei Microsystems – Multi-Format Digital Video Decoder

[AK8854VQ]
Input Video Status Register (R) [Sub Address 0x25] for auto detection mode
Sub Address 0x25
bit 7
bit 6
FIXED
UNDEF
bit 5
ST_B/W
bit 4
ST_VLF
bit 3
bit 2
bit 1
bit 0
ST_VCEN1 ST_VCEN0 ST_VSCF1 ST_VSCF0
Input Video Status Register Definition
BIT
Register
Name
bit 0
~
bit 1
ST_VSCF0
~
ST_VSCF1
Status of Video Sub-Carrier
Frequency
bit 2 ST_VCEN0
~
~
Status of Video Color Encode
bit 3 ST_VCEN1
bit 4 ST_VLF
bit 5 ST_BW
Status of
Video Line Frequency
Status of B/W Signal
bit 6 UNDEF
Un_define bit
bit 7 FIXED
Input Video Standard fixed bit
R/W
R
R
R
R
R
R
Definition
Input video signal subcarrier frequency indicator
[ST_VSCF1: ST_VSCF0] ( MHz )
[00]: 3.57954545 (NTSC-M,J)
[01]: 3.57561149 (PAL-M)
[10]: 3.58205625 (PAL-Nc)
[11]: 4.43361875
(PAL-B,D,G,H,I,N,60 , NTSC-4.43 , SECAM*)
Input signal color encode format indicator
[ST_VCEN1: ST_VCEN0]
[00]: NTSC
[01]: PAL
[10]: SECAM
[11]: Reserved
Input signal line number indicator
[0]: 525-line(NTSC-M,J , NTSC-4.43 , PAL-M,60)
[1]: 625-line (PAL-B,D,G,H,I,N,Nc , SECAM)
Input signal monochrome indicator
[0]: Not monochrome
[1]: Monochrome
Input signal detection indicator
[0]: Input signal detected
[1]: Input signal not detected
Input signal detection process status
[0]: Detection process in progress
[1]: Detection process completed
*If SECAM input signal is detected, ST_VSCF[1:0] goes to [11].
MS0973-E-01
89
2008/07