- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383640 > MT70003 (Aeroflex Inc.) SINGLE CHANNEL ARINC DECODER PDF資料下載
參數(shù)資料
| 型號(hào)： | MT70003 |
| 廠商： | Aeroflex Inc. |
| 英文描述： | SINGLE CHANNEL ARINC DECODER |
| 中文描述： | 單通道ARINC公司譯碼器 |
| 文件頁(yè)數(shù)： | 3/6頁(yè) |
| 文件大?。?/td> | 143K |
| 代理商： | MT70003 |
MT70003
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
3
tPLH
DATA READY
↑
from RESET DATA READY
↑
(16 bit bus option; data access incomplete; NOT DATA
ENABLE LO; LO pulse on NOT RESET DATA READY
>2 )
us
tPLH
tPLH
tPLH
tPLH
DATA READY
↑
from TAG VALID (NOT DATA
ENABLE LO; sequence operation)
DATA READY
↑
from NOT DATA ENABLE
↓
(TAG
VALID HI; NOT RESET DATA READY HI)
DATA READY
↓
from NOT DATA ENABLE
↑
TAG VALID
↓
from NOT RESET DATA READY
↑
(Data
access completed)
ADDRESS RECOGNITION times
us
us
us
us
ADDRESS RECOGNISED settling time from TAG VALID)
(external recognition MODE SELECT HI) )
TAG INPUTS settling time from TAG VALID (internal )
recognition MODE SELECT LO) )
ADDRESS RECOGNISED end of hold time from TAG )
VALID )
TAG INPUTS end of hold time from TAG VALID
6
4 -0.3
us
us
General
This circuit receives serial data from a buffered ARINC 429 bus into a 32 bit shift register. At the end of
transmission the received word is checked. It is only considered to be “good” if the overall parity is ODD and
the length is 32 bits. If the word fails these checks a TRANSMISSION FAULT flag is set. If the word is
‘good’ the tag bits are loaded into a tag latch and a TAG VALID flag is set. Either internal or external
address recognition can be selected according to the state of MODE SELECT.
If the address is recognised within 4 us time window a 32 bit word latch is updated from the shift register.
Thus the word latch only contains a “good” word whose address has been recognised. The contents of the
word latch can be accessed whenever DATA READY flag is HI. It is available on a parallel trio-state output
highway which is either 16 or 24 bits wide according to the state of 16/24 BUS SELECT. In the former, the
32 bit word is output in 2 halves and the state of output DATAMUX indicates which half is present. In the
latter case bits 1 to 8 (the tag bits) are not available but the remaining 24 bits are presented together.
The user signals his receipt of the ARINC word by pulsing NOT RESET DATA READY low indicating that
data access is complete which cancels TAG VALID and DATA READY.
The user has a whole word transmission time to access the word latch without entering an overrun condition.
When ‘end of word’ is detected an internal sequencer is initiated. Firstly, TAG VALID is examined. If this
is still HI an OVERRUN flag is set. Next the data access logic is initialized and both TAG VALID and
TRANSMISSION FAULT are cancelled.
Once set, the OVERRUN flag is only cancelled by a ‘data access complete’ signal. Thus the presence of an
OVERRUN flag signals that the rate of servicing the word latch is slower than the transmission rate. Note
that DATA READY and DATA MUX always refer to the status of the output data available from the word
latch which cannot be updated unless the user requests it, whereas TAG VALID and TRANSMISSION
FAULT always refer the the latest received word. The tag latch is always updated when TAG VALID is set
but unless this tag is recognised the contents of the trag latch will bear no relationship to the contents of the
word latch.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT70014 | TWO CHANNEL ARINC TRANSMITTER |
| MT72038 | FOUR CHANNEL ARINC 429 LINE RECEIVER |
| MT8804A | 8 x 4 Analog Switch Array(8 x 4模擬開關(guān)陣列) |
| MT8806 | ISO-CMOS 8 x 4 Analog Switch Array |
| MT8806AC | ISO-CMOS 8 x 4 Analog Switch Array |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT70014 | 制造商:AEROFLEX 制造商全稱:AEROFLEX 功能描述:TWO CHANNEL ARINC TRANSMITTER |
| MT700-CUG | 制造商:MARKTECH 制造商全稱:Marktech Corporate 功能描述:Ultra Bright T-1 3/4 LED Lamps |
| MT702 BP | 制造商:SAGAB Electronic 功能描述:MAGNET STICK 制造商:SAGAB 功能描述:MAGNET STICK 制造商:SAGAB 功能描述:CURRENT DETECTOR; Operating Temperature Min:-20C; Operating Temperature Max:50C; External Height:152mm; Weight:40g; Operating Temperature Range:-20C to +50C ;RoHS Compliant: NA 制造商:SAGAB 功能描述:CURRENT DETECTOR; No. of Digits / Alpha:(Not Available); Operating Temperature Min:-20C; Operating Temperature Max:50C; External Height:152mm; Weight:40g; Operating Temperature Range:-20C to +50C ;RoHS Compliant: NA |
| MT702 EX | 制造商:SAGAB Electronic 功能描述:MAGNET STICK ATEX 制造商:SAGAB 功能描述:MAGNET STICK, ATEX 制造商:SAGAB 功能描述:MAGNET STICK, ATEX, 300 GAUSS (0.3mT); Resolution - High Range Max:300G; Readings:Gauss; Operating Temperature Min:-20C; Operating Temperature Max:50C; External Height:20mm; External Width:18mm; External Depth:145mm; Weight:35g ;RoHS Compliant: NA |
| MT-7050N | 制造商:PROSKIT INDUSTRIES 功能描述:TESTER CONTINUITY FIBRE 制造商:PROSKIT INDUSTRIES 功能描述:TESTER, CONTINUITY, FIBRE 制造商:PROSKIT INDUSTRIES 功能描述:TESTER, CONTINUITY, FIBRE; Connector Type:-; Photodetector Type:-; External Length / Height:160mm; Weight:1.5kg ;RoHS Compliant: NA |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。