AK8855 Datasheet, PDF (74/81 Pages) Asahi Kasei Microsystems – NTSC/PAL Digital Video Decoder

[ASAHI KASEI]
Status Register (R/W) [Sub Address 0x10]
Register to indicate internal conditions of the AK8855.
AK8855
Sub Address 0x10
bit 7
bit 6
VBWSSDET EXTDET
bit 5
CCDET
bit 4
AGCSTS
bit 3
CPLLLCK
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 CPLLLCK Color PLL Locked Flag
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
to judge existence / non-existence of input
R
signal.
0 : signal is being input
1 : no signal input condition
to judge if Color Killer is active or not.
R 0 : Color Killer is in-active
1 : Color Killer process is active
to detect if AD-converted input signal is
R
over-flowing or not.
0 : normal
1 : input level is over-flowing
to show Lock condition of Color PLL
R 0 : PLL is locked
1 : PLL is not locked
R
0 : Sync AGC operation
1 : Peak AGC operation
to show that decoded data exist at Closed
R
Caption Data 1 / 2 registers.
0 : no Closed Caption Data exists
1 : decoded Closed Caption Data exists
to show that decoded data exist at Extended
R
Data 1 / 2 Registers
0 : no Extended Data exists
1 : decoded Extended Data exists
to show that decoded data exist at VBID / WSS
R
Data 1 / 2 Registers.
0 : no VBID / WSS data exists
1 : decoded VBID / WSS data exists
MS0319-E-03
74
2004 / 11