參數資料
型號： ADV7188BSTZ
廠商： Analog Devices Inc
文件頁數： 29/112頁
文件大?。?/td> 0K
描述： IC DECODER VID MULTIFORM 80LQFP
標準包裝： 1
類型： 視頻解碼器
應用： 機頂盒，視頻播放器，錄音機
電壓 - 電源，模擬： 3.15 V ~ 3.45 V
電壓 - 電源，數字： 1.65 V ~ 2 V
安裝類型： 表面貼裝
封裝/外殼： 80-LQFP
供應商設備封裝： 80-LQFP（14x14）
包裝： 托盤
ADV7188
Rev. A | Page 23 of 112
GLOBAL STATUS REGISTERS
Three registers provide summary information about the video
decoder: Status Register 1, Status Register 2, and Status Register 3.
These registers contain status bits that report operational information
to the user.
Status Register 1 [7:0], Address 0x10 [7:0]
This read-only register provides information about the internal
status of the ADV7188. See the CIL [2:0], Count-Into-Lock,
Address 0x51 [5:3] sections for information on the timing.
Depending on the setting of the FSCLE bit, the IN_LOCK [0] and
LOST_LOCK [1] bits of Status Register 1 are based solely on the
horizontal timing information or on the horizontal timing and
lock status of the color subcarrier. See the FSCLE, F Lock
section.
AD_RESULT [2:0], Autodetection Result, Address 0x10 [6:4]
These bits report the findings from the autodetection block. For
more information on enabling the autodetection block, see the
General Setup section. For information on configuring this
block, see the Autodetection of SD Modes section.
Table 20. AD_RESULT Function
AD_RESULT [2:0]
Description
000
NTSC M/J
001
NTSC 443
010
PAL M
011
PAL 60
100
PAL B/G/H/I/D
101
SECAM
110
PAL Combination N
111
SECAM 525
Status Register 2 [7:0], Address 0x12 [7:0]
Status Register 3 [7:0], Address 0x13 [7:0]
Table 21. Status Register 1 Function
Status Register 1 [7:0]
Bit Name
Description
0
IN_LOCK
In lock (now)
1
LOST_LOCK
Lost lock (since last read of this register)
2
FSC_LOCK
FSC locked (now)
3
FOLLOW_PW
AGC follows peak white algorithm.
4
AD_RESULT.0
Result of autodetection.
5
AD_RESULT.1
Result of autodetection.
6
AD_RESULT.2
Result of autodetection.
7
COL_KILL
Color kill is active
Table 22. Status Register 2 Function
Status Register 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, Type 2 if low.
2
MV_PS DET
Detected Macrovision pseudosync 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
Table 23. Status Register 3 Function
Status Register 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 is present at output.
3
CVBS
Indicates if a CVBS signal is detected in composite/S-video autodetection configuration
4
FREE_RUN_ACT
Indicates if the ADV7188 is in free-run mode. Outputs a blue screen by default. See the
about disabling this function.
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.
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