AK8859VQ Datasheet, PDF (21/73 Pages) Asahi Kasei Microsystems – NTSC/PAL/SECAM Digital Video Decoder

[AK8859VQ]
Setup processing setting
Sub Address: 0x02 [6]
Name
Definition
Notes
SETUP
[0]: Setup absent setting
[1]: Setup present setting
With the Setup present setting, the luminance and color signals are processed as follows:
Yout = (Yin-7.5)/0.925
Uout = Uin/0.925, Vout = Vin/0.925
[7.5.] Auto detection mode of input signal
The video input signal of the AK8859VQ can be automatically detected (auto detection mode) via register.
Settings for auto detection mode of input signal
Name
Definition
AUTODET
[0]: OFF (manual setting)
[1]: ON
Sub Address: 0x02 [7]
Notes
In auto detection mode, the AK8859VQ can detect the following parameters.
Number of lines per frame:
525 (Line)
625 (Line)
Subcarrier frequency:
3.57954545 (MHz)
3.57561149 (MHz)
3.58205625 (MHz)
4.43361875 (MHz)
Color encoding formats:
NTSC
PAL
SECAM
Monochrome signal*:
Not monochrome
Monochrome
(*Note: Automatic monochrome detection is active if the color kill setting is ON.)
The detected result of auto detection mode is reflected to Input Video Status Register.
This enables the host to distinguish among the formats NTSC-M,J / NTSC-4.43 / PAL-B,D,G,H,I,N / PAL-M
/ PAL-Nc / PAL-60 / SECAM and monochrome.
It should be noted that it does not detect NTSC-M, NTSC-J or PAL-B,D,G,H,I,N formats.
bit 7
FIXED
bit 6
UNDEF
bit 5
ST_B/W
bit 4
ST_VLF
Sub Address: 0x18 “Input Video Status Register”
bit 3
bit 2
bit 1
bit 0
ST_VCEN1 ST_VCEN0 ST_VSCF1 ST_VSCF0
MS1178-E-00
AKM Confidential
- 21 -
2010/04