AK8856VN Datasheet, PDF (91/98 Pages) Asahi Kasei Microsystems – NTSC/PAL Video Decoder

ASAHI KASEI
[AK8856 Preliminary Data Sheet]
Status Register (R/W) [Sub Address 0x10]
Register to indicate internal conditions of the AK8856.
Sub Address 0x10
bit 7
bit 6
VBWSSDET EXTDET
bit 5
CCDET
bit 4
AGCSTS
bit 3
VLOCKSTS
bit 2
PKWHITE
bit 1
COLKILST
bit 0
NSIG
Status Register Definition
BIT Register Name
bit 0
NOSIG
No Signal
bit 1
COLKILST
Color killer
bit 2
PKWHITE
Peak White Detection
bit 3
VLOCKSTS
VLOCK Status bit
bit 4
AGCSTS
AGC Status bit
bit 5
CCDET
Closed Caption Detect
bit 6
EXTDET
Extended Data Detect
bit 7
VBWSDET
VBID / WSS Data Detect
R/W
Definition
Detects presence of input signal.
R 0 : signal is being input
1 : no signal input condition
Status of Color Killer
R 0 : Color Killer is in-active
1 : Color Killer process is active
Detects input overflow by monitoring output of ADC
R 0 : normal
1 : input level overflow
VLOCK status
R ^{0 : VLOCK is properly operating}
1 : VLOCK is out-of-lock condition
R
0 : Sync AGC operation
1 : Peak AGC operation
Detects presence of decoded Closed Caption data in
the Closed Caption ½ registers
R _{0 : no Closed Caption Data exists}
1 : decoded Closed Caption Data exists
Detects decoded data in Extended Data 1/2 Registers
R
0 : no Extended Data exists
1 : decoded Extended Data exists
Detects decoded data in VBID/WSS Data 1/2
Registers.
R _{0 : no VBID / WSS data exists}
1 : decoded VBID / WSS data exists
MS0522-E-00
91
2006/Dec