AK8857VQ Datasheet, PDF (87/105 Pages) Asahi Kasei Microsystems – Dual Channel Digital Video Decoder

[AK8857VQ]
Input Video Standard A Register (R/W) [Sub Address 0x0E] (A Block Register)
Input Video Standard A Register (R/W) [Sub Address 0x26] (B Block Register)
This register is applied to set the analog input signal.
Sub Address 0x0E, 0x26
bit 7
bit 6
AUTODETA SETUPA
AUTODETB SETUPB
Default Value
0
0
bit 5
BWA
BWB
bit 4
VLFA
VLFB
bit 3
VCENA1
VCENB1
0
0
0
bit 2
VCENA0
VCENB0
0
Default Value: 0x00
bit 1
bit 0
VSCFA1 VSCFA0
VSCFB1 VSCFB0
0
0
Input Video Standard A/B Register Definition
Bit Register Name
R/W
bit 0 VSCFA/B 0
~
~
bit 1 VSCFA/B 1
Video Sub-Carrier
R/W
Frequency_A/B
bit 2 VCENA/B 0
Video Color
~
~
R/W
Encode_A/B
bit 3 VCENA/B 1
bit 4 VLFA/B
bit 5 BWA/B
Video Line
R/W
Frequency_A/B
Black
White_A/B
&
R/W
bit 6 SETUPA/B
Setup_A/B
R/W
Video Standard
bit 7 AUTODETA/B
R/W
Auto Detect_A/B
Definition
Input video signal subcarrier frequency setting
[VSCFA/B 1 : VSCFA/B 0 ] ( 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)*¹
Input signal color encode format setting
[VCENA/B 1 : VCENA/B 0]
[00] : NTSC
[01] : PAL
[10] : SECAM
[11] : Reserved
Input signal line frequency setting
[0] : 525 line (NTSC-M,J , NTSC-4.43 , PAL-M,60)
[1] : 625 line (PAL-B,D,G,H,I,N , PAL-Nc , SECAM)
Monochrome mode (ON/OFF) setting *²
[0] : Monochrome mode OFF
[1] : Monochrome mode ON
Setup process setting
[0] : Process as input signal with no setup
[1] : Process as input signal with setup
Input signal auto detection setting *³
[0]: OFF (auto detection disabled; set manually)
[1]: ON (auto detection enabled)
*¹ For SECAM input signal, change VSCF[1:0] setting to [11].
*² DOA register of Sub-address “0x10” and DOB register of Sub-address “0x28” setting takes priority
regardless to above BW register setting.
*³ “Auto detection function” must not use when it is being operated on Direct SYNC VLOCK
(Sub-Address0x03[7]=1).
MS1189-E-01
-87-
2010/12