ADV7180
GLOBAL STATUS REGISTER
Four registers provide summary information about the video
decoder. The IDENT register allows the user to identify the
revision code of the ADV7180. The other three registers contain
status bits from the ADV7180.
Table 17. Status_1 Function
STATUS_1
[7:0]
Bit Name
IN_LOCK
Description
0
1
In lock (now)
Lost lock (since last read of this
register)
LOST_LOCK
IDENTIFICATION
IDENT[7:0], Address 0x11 [7:0]
2
3
FSC_LOCK
FOLLOW_PW
FSC locked (now)
AGC follows peak white
algorithm
Result of autodetection
Result of autodetection
Result of autodetection
Color kill active
The register identification of the revision of the ADV7180. An
identification value of 0x18 indicates the ADV7180.
4
5
6
7
AD_RESULT[0]
AD_RESULT[1]
AD_RESULT[2]
COL_KILL
STATUS 1
STATUS_1[7:0], Address 0x10 [7:0]
This read-only register provides information about the internal
status of the ADV7180.
STATUS 2
See the CIL[2:0], Count Into Lock, Address 0x51 [2:0] section
and the COL[2:0], Count Out of Lock, Address 0x51 [5:3]
section for details on timing.
STATUS_2[7:0], Address 0x12 [7:0]
Table 18. STATUS_2 Function
STATUS_2
[7:0]
Depending on the setting of the FSCLE bit, the Status Register 0
and Status Register 1 are based solely on horizontal timing infor-
mation or on the horizontal timing and lock status of the color
subcarrier. See the FSCLE, FSC Lock Enable, Address 0x51 [7]
section.
Bit Name
MVCS DET
MVCS T3
Description
0
1
Detected Macrovision color striping
Macrovision color striping
protection; conforms to Type 3 if
high, Type 2 if low
2
MV PS DET
Detected Macrovision pseudo
sync pulses
AUTODETECTION RESULT
AD_RESULT[2:0], Address 0x10 [6:4]
3
4
5
6
7
MV AGC DET
LL NSTD
FSC NSTD
Reserved
Reserved
Detected Macrovision AGC pulses
Line length is nonstandard
FSC frequency is nonstandard
The AD_RESULT[2:0] bits report back on the findings from the
ADV7180 autodetection block. Consult the General Setup
section for more information on enabling the autodetection
block and the Autodetection of SD Modes section for more
information on how to configure it.
STATUS 3
STATUS_3[7:0], Address 0x13 [7:0]
Table 16. AD_RESULT Function
AD_RESULT[2:0]
Description
NTSM M/J
NTSC 4.43
PAL M
PAL 60
PAL B/G/H/I/D
SECAM
Table 19. STATUS_3 Function
STATUS_3
[7:0]
000
001
010
011
100
101
110
111
Bit Name
Description
0
INST_HLOCK
Horizontal lock indicator
(instantaneous)
Gemstar detect
Flags whether 50 Hz or 60 Hz is
present at output
Reserved for future use
ADV7180 outputs a blue screen
(see the DEF_VAL_EN, Default
Value Enable, Address 0x0C [0]
section)
1
2
GEMD
SD_OP_50Hz
PAL Combination N
SECAM 525
3
4
FREE_RUN_ACT
5
6
7
STD FLD LEN
INTERLACED
PAL_SW_LOCK
Field length is correct for
currently selected video standard
Interlaced video detected (field
sequence found)
Reliable sequence of swinging
bursts detected
Rev. A | Page 21 of 112
ADI [ ADI ]
