adv7189b Analog Devices, Inc., adv7189b Datasheet - Page 19

• Manufacturer Part Number: adv7189b
• Description: Multiformat Sdtv Video Decoder
• Manufacturer: Analog Devices, Inc.

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 ADV7189B. The other three registers
contain status bits from the ADV7189B.
IDENTIFICATION
IDENT[7:0] Address 0x11[7:0]
This register provides identification of the revision of
the ADV7189B.
An identification value of 0x11 indicates the ADV7189,
released silicon.
An identification value of 0x13 indicates the ADV7189B silicon.
STATUS 1
STATUS_1[7:0] Address 0x10[7:0]
This read-only register provides information about the internal
status of the ADV7189B. These bits are used to set VS free run
(coast) frequency. See the
0xF9[3:2]section and
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 information or
on the horizontal timing and lock status of the color subcarrier.
See the
SD AUTODETECTION RESULT
AD_RESULT[2:0] Address 0x10[6:4]
The AD_RESULT[2:0] bits report back on the findings from
the autodetection block. For more information on enabling
the autodetection block, see the
information on configuring it, see the
Modes section.
Table 14. AD_RESULT Function
AD_RESULT[2:0]
000
001
010
011
100
101
110
111
F SCLE FSC Lock Enable, Address 0x51[7] section.
1 6 3 H
C OL[2:0] Count Out-of-Lock, Address
1 6 2 H
V S_Coast[1:0], Address
1 6 1 H
Description
NTSM-MJ
NTSC-443
PAL-M
PAL-60
PAL-BGHID
SECAM
PAL-Combination N
SECAM 525
G eneral Setup section. For
1 6 4 H
A utodetection of SD
1 6 5 H
Rev. B | Page 19 of 104
Table 15. 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 16. STATUS 2 Function
STATUS 2[7:0]
0
1
2
3
4
5
6
7
STATUS 3
STATUS_3[7:0], Address 0x13[7:0]
Table 17. STATUS 3 Function
STATUS 3[7:0]
0
1
2
3
4
5
6
7
Bit Name
INST_HLOCK
GEMD
SD_OP_50HZ
FREE_RUN_ACT
STD_FLD_LEN
INTERLACED
PAL_SW_LOCK
Bit Name
MVCS DET
MVCS T3
MV_PS DET
MV_AGC DET
LL_NSTD
FSC_NSTD
Reserved
Reserved
Bit Name
IN_LOCK
LOST_LOCK
FSC_LOCK
FOLLOW_PW
AD_RESULT.0
AD_RESULT.1
AD_RESULT.2
COL_KILL
Description
In lock (right now).
Lost lock (since last read of
this register).
F
AGC follows peak white
algorithm.
Result of autodetection.
Result of autodetection.
Result of autodetection.
Color kill active.
Description
Detected Macrovision color
striping.
Macrovision color striping
protection. Conforms to
Type 3 if high, to Type 2 if
low.
Detected Macrovision
pseudo sync pulses.
Detected Macrovision AGC
pulses.
Line length is nonstandard.
F
nonstandard.
Description
Horizontal lock indicator
(instantaneous).
Gemstar Detect.
Flags whether 50 Hz or
60 Hz is present at output.
Reserved for future use.
ADV7189B outputs a blue
screen (see the
Default Value Enable,
Address 0x0C[0] section).
Field length is correct for
currently selected video
standard.
Interlaced video detected
(field sequence found).
Reliable sequence of
swinging bursts detected.
SC
SC
locked (right now).
frequency is
ADV7189B
D EF_VAL_EN
1 6 6 H