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參數(shù)資料
| 型號： | TW2802 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | TW2802/4 Multiple Video Decoder For Security Applications |
| 中文描述： | TW2802 / 4多路視頻解碼器的安全應(yīng)用 |
| 文件頁數(shù)： | 28/80頁 |
| 文件大?。?/td> | 946K |
| 代理商： | TW2802 |
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www.techwellinc.com
Preliminary
TW2804/TW2802 Multiple Video Decoder
Techwell, Inc.
Datasheet Rev. 2.4
09/09/2003
28
Interrupt Interface
The TW280X provides the interrupt request function via an IRQ pin. Any video loss detection or
motion detection will make the IRQ pin high until cleared via register IRQCLR (0x39) by the
host. The host processor will read the interrupt status register DET_NVMD
(0x38) to find out
which channel has sensed motion or video loss. Writing high to the corresponding bit of the
interrupt clear register IRQCLR (0x39) will clear the interrupt request. Each interrupt status bit
also has its mask bit (0x3A) to disable the interrupt for that function. This sequence is described
in Fig 20.
The TW280X also provides the video loss detection or motion detection flag of individual
channel via NVMD pins. Four NVMD pins have respective channel information of motion or
video loss so that host takes status information directly by reading these pins. Its mode is
controlled by NVMDB (0x3B) that is set “1” for video loss flag and “0” for motion detection flag.
IRQ Pin output
N
o
0x80
0x00
0x00
0x04
0x02
0x00
0x80
0x04
0x02
M
o
M
o
Status Register
Clear Register
C lear by H ost
C lear by H ost
C lear by H ost
Fig 20 Timing Diagram of Interrupt Interface
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相關(guān)代理商/技術(shù)參數(shù) |
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| TW2802-FA | 功能描述:IC DECODER VIDEO NTSC/PAL RoHS:是 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標準包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動電話，手機，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
| TW-28-02-F-D-309-SM | 制造商:Samtec Inc 功能描述:2MM TERMINAL STRIPS - Bulk |
| TW-28-02-FM-D-309-SM | 制造商:Samtec Inc 功能描述:2MM TERMINAL STRIPS - Bulk |
| TW-28-02-FM-S-309-SM | 制造商:Samtec Inc 功能描述:2MM TERMINAL STRIPS - Bulk |
| TW-28-02-F-S-309-SM | 制造商:Samtec Inc 功能描述:2MM TERMINAL STRIPS - Bulk |
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