- 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： | 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 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 143K |
| 代理商： | MT70003 |
MT70003
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
4
Arinc 429 Word Structure
An Arinc 429 word is 32 bits long. The first part of the word to be transmitted is the lable (tag) of which bit
1 is the most significant and bit 8 the least significant. Bits 9 and 10 are reserved for the source/destination
identifier in some formats otherwise they are used as data pad bits. When circuit input IDENTIFIER is
wired HI bits 9 & 10 are treated as extra tag bits and contribute to address recognition but when IDENTIFIER
is wired LO bits 9 & 10 are excluded from address recognition.
Bits 11 to 29 are the data field of which bit 11 is the least significant, Bits 30 and 31 are reserved for the
sign/status matrix and bit 32 is the parity bit.
μ
For high speed operation the bit rate must be 100 Kilobits per second + 1% and circuit input FAST/SLOW
SELECT must be wired LO. For low speed operation the bit rate must be in the range 12.0 to 14.5 Kilobits
per second and the selected rate should be maintained within 1%. FAST/SLOW SELECT must then be wired
HI.
Internal Timing
This is determined by a 1 Mhz clock applied to
IN. this clock is asynchronous with the bit rate and should
be maintained within + 10%.
Word Synchronisation
The digital word is synchronised by reference to a gap of 4 bit times (minimum) between words. The
beginning of the first transmitted bit following the gap signifies the beginning of the next word.
Spike Rejection (Timing asumes clock period = 1
μ
s)
The circuit incorporates pulse rejection filters on both inputs. This will reject pulses less than 2
μ
s duration
and accept pulses greater than 3
μ
s duration.
Internal Address Recognition
If MODE SELECT is wired LO internal address recognition is performed during the sequencer period.
during the sequencer period. If IDENTIFIER is LO the states input on T1 to T8 are internally compared with
bits 1 to 8 of the tag latch and only if they are equivalent within 4
μ
s of TAG VALID being set is the address
recognised. Although the states on T9 and T10 are ignored, these inputs should be held at good logic levels
otherwise the circuit supply current could increase.
If IDENTIFIER is HI then T9 and T10 are also compared against 9 & 10 of the tag latch.
With MODE SELECT held LO the conditions on input pins ADDRESS RECOGNISED and TAG ENABLE
are ignored. Since these pins have internal pull-up transistors they need not be connected if not required.
External Address Recognition (Timing assumes clock period = 1
μ
s )
If MODE SELECT is wired HI the internal address comparator is inhibited. T1 to T10 respond as tri-state
output ports enabled whenever NOTTAG ENABLE is LO. Then the contents of the tag latch are presented to
the tag output bus.
The normal sequence of operations in this mode is for TAG VALID to be set at the end of a good word. The
user takes this as a singla to interrogate the tag latch by enabling the tristates. Within 4
μ
s of TAG VALID
going HI a decision is taken whether or not to load the word latch via ADDRESS RECOGNISED.
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，3分鐘左右您將得到回復(fù)。