ADV7181BBCPZ datasheet(17/96 Pages) AD

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ADV7181B

Rev. 0 | Page 17 of 96

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.

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]

Description

000

NTSM-MJ

001

NTSC-443

010

PAL-M

011

PAL-60

100

PAL-BGHID

101

SECAM

110

PAL-Combination N

111

SECAM 525

Table 14. STATUS 1 Function

STATUS 1 [7:0]

Bit Name

Description

IN_LOCK

In lock (right now).

LOST_LOCK

Lost lock (since last read of this register).

FSC_LOCK

Fsc locked (right now).

FOLLOW_PW

AGC follows peak white algorithm.

AD_RESULT.0

Result of autodetection.

AD_RESULT.1

Result of autodetection.

AD_RESULT.2

Result of autodetection.

COL_KILL

Color kill active.

STATUS 2

STATUS_2[7:0], Address 0x12 [7:0]

Table 15. STATUS 2 Function

STATUS 2 [7:0]

Bit Name

Description

MVCS DET

Detected Macrovision color striping.

MVCS T3

Macrovision color striping protection. Conforms to Type 3 (if high), and Type 2 (if low).

MV_PS DET

Detected Macrovision pseudo Sync pulses.

MV_AGC DET

Detected Macrovision AGC pulses.

LL_NSTD

Line length is nonstandard.

FSC_NSTD

Fsc frequency is nonstandard.

Reserved

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