參數(shù)資料
型號： ADV7180BSTZ-REEL
廠商： Analog Devices Inc
文件頁數(shù)： 70/116頁
文件大?。?/td> 0K
描述： IC VIDEO DECODER SDTV 64-LQFP
產(chǎn)品變化通告： ADV7180 Metal Mask Edit 22/Oct/2009
設計資源： Low Cost Differential Video Receiver Using ADA4851 Amplifier and ADV7180 Video Decoder (CN0060)
Low Cost Video Multiplexer for Video Switching Using ADA4853-2 Op Amp with Disable Function (CN0076)
標準包裝： 1
類型： 視頻解碼器
應用： 數(shù)碼相機，手機，便攜式視頻
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應商設備封裝： 64-LQFP（10x10）
包裝： 標準包裝
其它名稱： ADV7180BSTZ-REELDKR
Data Sheet
ADV7180
Rev. I | Page 57 of 116
VDP_TTXT_TYPE_MAN_ENABLE, Enable Manual
Selection of Teletext Type, Address 0x60[2], User Sub Map
Setting VDP_TTXT_TYPE_MAN_ENABLE to 0 (default), the
manual programming of the teletext type is disabled.
Setting VDP_TTXT_TYPE_MAN_ENABLE to 1, the manual
programming of the teletext type is enabled.
VDP_TTXT_TYPE_MAN[1:0], Specify the Teletext Type,
Address 0x60[1:0], User Sub Map
These bits specify the teletext type to be decoded. These bits are
functional only if VDP_TTXT_TYPE_MAN_ENABLE is set to 1.
Table 72. VDP_TTXT_TYPE_MAN Function
VDP_TTXT_
TYPE_MAN[1:0]
625/50 (PAL)
525/60 (NTSC)
00 (default)
Teletext-ITU-BT.653-
625/50-A
Reserved
01
Teletext-ITU-BT.653-
625/50-B (WST)
Teletext-ITU-BT.653-
525/60-B
10
Teletext-ITU-BT.653-
625/50-C
Teletext-ITU-BT.653-
525/60-C or EIA516
(NABTS)
11
Teletext-ITU-BT.653-
625/50-D
Teletext-ITU-BT.653-
525/60-D
VDP Ancillary Data Output
Reading the data back via I2C may not be feasible for VBI data
standards with high data rates (for example, teletext). An alternative
is to place the sliced data in a packet in the line blanking of the
digital output CCIR656 stream. This is available for all standards
sliced by the VDP module.
When data is sliced on a given line, the corresponding ancillary
data packet is placed immediately after the next EAV code that
occurs at the output (that is, data sliced from multiple lines are
not buffered up and then emitted in a burst). Note that, due to
the vertical delay through the comb filters, the line number on
which the packet is placed differs from the line number on
which the data was sliced.
The user can enable or disable the insertion of VDP results that
have been decoded into the 656 ancillary streams by using the
ADF_ENABLE bit.
ADF_ENABLE, Enable Ancillary Data Output Through
656 Stream, Address 0x62[7], User Sub Map
Setting ADF_ENABLE to 0 (default) disables the insertion of
VBI decoded data into the ancillary 656 stream.
Setting ADF_ENABLE to 1 enables the insertion of VBI
decoded data into the ancillary 656 stream.
The user may select the data identification word (DID) and the
secondary data identification word (SDID) through programming
the ADF_DID[4:0] and ADF_SDID[5:0] bits, respectively.
ADF_DID[4:0], User-Specified Data ID Word in Ancillary
Data, Address 0x62[4:0], User Sub Map
This bit selects the data ID word to be inserted into the ancillary
data stream with the data decoded by the VDP.
The default value of ADF_DID[4:0] is 10101.
ADF_SDID[5:0], User-Specified Secondary Data ID Word
in Ancillary Data, Address 0x63[5:0], User Sub Map
These bits select the secondary data ID word to be inserted in
the ancillary data stream with the data decoded by the VDP.
The default value of ADF_SDID[5:0] is 101010.
DUPLICATE_ADF, Enable Duplication/Spreading of
Ancillary Data over Y and C Buses, Address 0x63[7], User
Sub Map
This bit determines whether the ancillary data is duplicated over
both Y and C buses or if the data packets are spread between
the two channels.
When DUPLICATE_ADF to 0 (default) is set, the ancillary data
packet is spread across the Y and C data streams.
When DUPLICATE_ADF to 1 is set, the ancillary data packet is
duplicated on the Y and C data streams.
ADF_MODE[1:0], Determine the Ancillary Data Output
Mode, Address 0x62[6:5], User Sub Map
These bits determine whether the ancillary data output mode is
in byte mode or nibble mode.
Table 73. ADF_MODE
ADF_MODE[1:0]
Description
00 (default)
Nibble mode
01
Byte mode, no code restrictions
10
Byte mode, but 0x00 and 0xFF prevented
(0x00 replaced by 0x01, 0xFF replaced by 0xFE)
11
Reserved
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