ADV7181B
Rev. B | Page 75 of 100
Bits
Subaddress
Register
Bit Description
7
6 5
4
3 2
1
0 Comments Notes
0x0F Power
Management
Reserved.
0
0
Set to default
0 Chip
power-down
controlled by pin
PDBP. Power-down bit priority
selects between PWRDN bit and PIN.
1
Bit has priority (pin
disregarded)
Reserved.
0
0
Set to default
0 System
functional
PWRDN. Power-down places the
decoder in a full power-down mode.
1 Powered
down
See PDBP, 0x0F Bit 2.
Reserved.
0 Set
to
default
0
Normal
operation
RES. Chip reset loads all I
2
C bits with
default values.
1
Start
reset
sequence
Executing
reset
takes approximately
2 ms. This bit is self-
clearing.
0x10
IN_LOCK.
x
In lock (right now) = 1
LOST_LOCK.
x
Lost lock (since last read) = 1
Status
Register 1.
(Read
Only)
FSC_LOCK.
x
F
SC
lock (right now) = 1
FOLLOW_PW.
x
Peak white AGC mode
active = 1
Provides
information about
the internal status
of the decoder.
0
0
0
NTSM-MJ
0
0
1
NTSC-443
0
1
0
PAL-M
0
1
1
PAL-60
1
0
0
PAL-B/G/H/I/D
1
0
1
SECAM
1
1
0
PAL-combination
N
AD_RESULT[2:0]. Autodetection
result reports the standard of the
input video.
1 1 1
SECAM
525
Detected standard.
COL_KILL.
x
Color
kill is active = 1
Color kill.
0x11 IDENT
(Read Only)
IDENT[7:0] Provides identification
on the revision of the part.
x
x
x
x
x
x
x
x
ADV7181B = 0x13.
0x12
MVCS DET.
x
MV color striping detected
1 = detected.
MVCS T3.
x
MV color striping type
0 = Type 2,
1 = Type 3.
MV PS DET.
x
MV pseudo sync detected
1 = detected.
MV AGC DET.
x
MV AGC pulses detected
1 = detected.
LL NSTD.
x
Nonstandard line length
1 = detected.
FSC
NSTD.
x
F
SC
frequency
nonstandard
1 = detected.
Status
Register 2
(Read Only)
Reserved. x
x
0x13
INST_HLOCK.
x
1 = horizontal lock
achieved
Unfiltered.
GEMD.
x
1 = Gemstar data detected
SD_OP_50HZ.
x
SD 60 Hz detected
Reserved.
x
SD 50 Hz detected
SD field rate detect.
FREE_RUN_ACT.
x
1 = Free-run mode active
Blue screen output.
STD FLD_LEN.
x
1 = Field length standard
Correct field length
found.
INTERLACED.
x
1 = Interlaced video
detected
Field sequence
found.
Status
Register 3
(Read Only)
PAL_SW_LOCK.
x
1 = Swinging burst
detected
Reliable swinging
burst sequence.
