AK8858 Datasheet, PDF (90/96 Pages) Asahi Kasei Microsystems – PS/SD Multi Format Video Decoder

[9.1.32] Input Video Status Register (R) [Sub Address 0x25]
Input video status register for auto detection mode.
[AK8858]
bit 7
bit 6
bit 5
bit 4
bit 3
FIXED UNDEF ST_BW ST_VLF ST_VCEN1
bit 2
ST_VCEN0
Sub Address: 0x25
bit 1
bit 0
ST_VSCF1 ST_VCSF0
Input Video Status Register
BIT Register Name
R/W Definition
Input video signal subcarrier frequency indicator
bit 0 ST_VSCF0
~~
bit 1 ST_VSCF1
bit 2 ST_VCEN0
~~
bit 3 ST_VCEN1
bit 4 ST_VLF
bit 5 ST_BW
bit 6 UNDEF
bit 7 FIXED
Status of
Video Sub-Carrier R
Frequency
Status of Video
Color Encode
R
Status of Video
Line Frequency
R
Status of B/W
R
Un-Define
R
Input Video
Standard Fixed
R
For CVBS and S (Y/C) signal decode results
shows as follows:
ST_VSCF[1:0]
00: 3.57954545 MHz
01: 3.57561149 MHz
10: 3.58205625 MHz
11: 4.43361475 MHz (SECAM detected result)
For D1/D2 signal decode results shows as follows
(this result also apply if auto detection mode is OFF)
00: D1
01: D2
10/11: Reserved
Input signal color encode format indicator
ST_VCEN[1:0]
00: NTSC
01: PAL
10: SECAM
11: Reserved
Input signal line number indicator
0: 525 line
1: 625 line
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
MS1230-E-00
- 90 -
2010/9