ADV7181B_15 Datasheet, PDF (18/100 Pages) Analog Devices – Multiformat SDTV Video Decoder

ADV7181B
GLOBAL STATUS REGISTERS
Four registers provide summary information about the video
Table 14. STATUS 1 Function
decoder. The IDENT register allows the user to identify the
STATUS 1[7:0] Bit Name
Description
revision code of the ADV7181B. The other three registers
0
IN_LOCK
In lock (right now).
contain status bits from the ADV7181B.
1
IDENTIFICATION
2
IDENT[7:0] Address 0x11[7:0]
3
The register identification of the revision of the ADV7181B.
LOST_LOCK
FSC_LOCK
FOLLOW_PW
Lost lock (since last read
of this register).
FSC locked (right now).
AGC follows peak white
algorithm.
4
AD_RESULT.0 Result of autodetection.
An identification value of 0x11 indicates the ADV7181 released
5
AD_RESULT.1 Result of autodetection.
silicon.
An identification value of 0x13 indicates the ADV7181B silicon.
STATUS 1
E ^{STATUS_1[7:0] Address 0x10[7:0]}
This read-only register provides information about the internal
status of the ADV7181B.
T _{See the CIL[2:0] Count Into Lock, Address 0x51[2:0] and the}
COL[2:0] Count Out-of-Lock, Address 0x51[5:3] sections for
information on the timing.
E _{Depending on the setting of the FSCLE bit, the Status 0 and}
Status 1 are based solely on horizontal timing information or on
the horizontal timing and lock status of the color subcarrier. See
L _{the FSCLE FSC Lock Enable, Address 0x51[7] section.}
AUTODETECTION RESULT
AD_RESULT[2:0] Address 0x10[6:4]
O _{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
S ^{block, and the Autodetection of SD Modes section to determine}
how to configure it.
Table 13. AD_RESULT Function
AD_RESULT[2:0]
Description
B ₀₀₀
NTSM-MJ
001
NTSC-443
010
PAL-M
O ⁰¹¹
PAL-60
6
AD_RESULT.2 Result of autodetection.
7
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
0
MVCS DET
Detected Macrovision color
striping.
1
MVCS T3
Macrovision color striping
protection. Conforms to
Type 3 (if high), and Type 2
(if low).
2
MV_PS DET Detected Macrovision
pseudo sync pulses.
3
MV_AGC DET Detected Macrovision AGC
pulses.
4
LL_NSTD
Line length is nonstandard.
5
FSC_NSTD
FSC frequency is
nonstandard.
6
Reserved
7
Reserved
STATUS 3
STATUS_3[7:0], Address 0x13[7:0]
Table 16. STATUS 3 Function
STATUS 3[7:0] Bit Name
Description
0
INST_HLOCK Horizontal lock indicator
(instantaneous).
1
GEMD
Gemstar Detect.
2
SD_OP_50HZ Flags whether 50 Hz or
60 Hz are present at output.
3
Reserved for future use.
100
PAL-B/G/H/I/D
4
FREE_RUN_ACT ADV7181B outputs a blue
101
SECAM
screen (see the
110
PAL-Combination N
111
SECAM 525
DEF_VAL_EN Default Value
Enable, Address 0x0C[0]
section).
5
STD_FLD_LEN Field length is correct for
currently selected video
standard.
6
INTERLACED Interlaced video detected
(field sequence found).
7
PAL_SW_LOCK Reliable sequence of
swinging bursts detected.
Rev. B | Page 18 of 100