ADV7181 AD [Analog Devices], ADV7181 Datasheet - Page 17

• Manufacturer Part Number: ADV7181
• Description: Multiformat SDTV Video Decoder
• Manufacturer: AD [Analog Devices]

GLOBAL STATUS REGISTERS
Four registers provide summary information about the video
decoder. The IDENT register allows the user to identify the
revision code of the ADV7181B. The other three registers
contain status bits from the ADV7181B.
IDENTIFICATION
IDENT[7:0] Address 0x11 [7:0]
The register identification of the revision of the ADV7181B.
An identification value of 0x11 indicates the ADV7181, released
silicon.
An identification value of 0x13 indicates the ADV7181B.
STATUS 1
STATUS_1[7:0] Address 0x10 [7:0]
This read-only register provides information about the internal
status of the ADV7181B.
See CIL[2:0] Count Into Lock, Address 0x51 [2:0] and COL[2:0
Count Out of Lock, Address 0x51 [5:3] for information on the
timing.
Table 14. STATUS 1 Function
STATUS 1 [7:0]
0
1
2
3
4
5
6
7
STATUS 2
STATUS_2[7:0], Address 0x12 [7:0]
Table 15. STATUS 2 Function
STATUS 2 [7:0]
0
1
2
3
4
5
6
7
MVCS DET
MVCS T3
MV_PS DET
MV_AGC DET
LL_NSTD
FSC_NSTD
Reserved
Reserved
Bit Name
Bit Name
IN_LOCK
LOST_LOCK
FSC_LOCK
FOLLOW_PW
AD_RESULT.0
AD_RESULT.1
AD_RESULT.2
COL_KILL
Description
Detected Macrovision color striping.
Macrovision color striping protection. Conforms to Type 3 (if high), and Type 2 (if low).
Detected Macrovision pseudo Sync pulses.
Detected Macrovision AGC pulses.
Line length is nonstandard.
Fsc frequency is nonstandard.
Description
In lock (right now).
Lost lock (since last read of this register).
Fsc locked (right now).
AGC follows peak white algorithm.
Result of autodetection.
Result of autodetection.
Result of autodetection.
Color kill active.
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Depending on the setting of the FSCLE bit, the Status 0 and
Status 1 are based solely on horizontal timing info or on the
horizontal timing and lock status of the color subcarrier. See the
FSCLE Fsc Lock Enable, Address 0x51 [7] section.
AUTODETECTION RESULT
AD_RESULT[2:0] Address 0x10 [6:4]
The AD_RESULT[2:0] bits report back on the findings from the
ADV7181B autodetection block. Consult the General Setup
section for more information on enabling the autodetection
block, and the Autodetection of SD Modes section to find out
how to configure it.
Table 13. AD_RESULT Function
AD_RESULT[2:0]
000
001
010
011
100
101
110
111
Description
NTSM-MJ
NTSC-443
PAL-M
PAL-60
PAL-BGHID
SECAM
PAL-Combination N
SECAM 525
ADV7181B