AK8857VQ Datasheet, PDF (98/105 Pages) Asahi Kasei Microsystems – Dual Channel Digital Video Decoder

Input Video Status A Register (R) [Sub Address 0x1C] (A block register)
Input Video Status B Register (R) [Sub Address 0x34] (B block register)
[AK8857VQ]
Sub Address 0x1C, 0x34
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
FIXEDA UNDEFA ST_B/WA ST_VLFA ST_VCENA1 ST_VCENA0 ST_VSFA1
FIXEDB UNDEFB ST_B/WB ST_VLFB ST_VCENB1 ST_VCENB0 ST_VSFB1
bit 0
ST_VSFA0
ST_VSFB0
Input Video Status A/B Register Definition
BIT Register Name
bit 0 ST_VSFA/B 0
~
~
bit 1 ST_VSFA/B 1
Status of Video
Sub-Carrier
Frequency_A/B
bit 2 ST_VCENA/B 0
Status of Video Color
~
~
Encode_A/B
bit 3 ST_VCENA/B 1
bit 4 ST_VLFA/B
Status of Video Line
Frequency_A/B
bit 5 ST_BWA/B
bit 6 UNDEFA/B
bit 7 FIXEDA/B
Status of B/W
Signal_A/B
Un_define_A/B
Input Video Standard
fixed_A/B
R/W Definition
Input video signal subcarrier
frequency indicator
[ ST_VSFA/B 1 : ST_VSFA/B 0 ] ( MHz )
[00] : 3.57954545 (NTSC-M,J)
R [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
R
[01] : PAL
[10] : SECAM
[11] : Reserved
Input signal line number indicator
[0] : 525 line (NTSC-M,J , NTSC-4.43 ,
R
PAL-M,60)
[1] : 625 line (PAL-B,D,G,H,I,N,Nc,
SECAM)
Input signal monochrome indicator
R [0]: Not monochrome
[1]: Monochrome
Input signal detection indicator
R [0]: Input signal detected
[1]: Input signal not detected
Input signal detection process status
R [0]: Detection process in progress
[1]: Detection process completed
*If SECAM input signal is detected, ST_VSCF[1:0] goes to [11].
MS1189-E-01
-98-
2010/12