參數(shù)資料
型號(hào)： LICAL-TRC-MT
廠商： Linx Technologies Inc
文件頁(yè)數(shù)： 11/44頁(yè)
文件大?。?/td> 0K
描述： IC TRANSCODER MT BI-DIR 20-SSOP
特色產(chǎn)品： MT Series Transcoder
標(biāo)準(zhǔn)包裝： 1
系列： MT
類型： 數(shù)據(jù)代碼轉(zhuǎn)換器
應(yīng)用： 警報(bào)系統(tǒng)，通信系統(tǒng)
電壓 - 電源，模擬： 2.0 V ~ 5.5 V
安裝類型： 表面貼裝
封裝/外殼： 20-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 20-SSOP
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： LICAL-TRC-MTDKR
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15
The MT Series transcoder can store up to sixty unique addresses in its
memory. If a transcoder is re-learned, its permissions are overwritten. The
transcoder does not create a second instance of the same address. If a
new transcoder is learned while the memory is full, then the transcoder
writes the new address over the first address in memory. It flashes the
MODE_IND line five times to indicate that the memory is full and the next
address learned will overwrite the first. All of the learned addresses are
retained if power is removed from the transcoder.
If the CRT/LRN line is held high for ten seconds while the ENC_SEL line is
low, then the transcoder erases all of the stored addresses from memory.
The MODE_IND line goes high for as long as the CRT/LRN line is high,
but after the ten seconds it goes low. Once the CRT/LRN line is pulled low
again, the MODE_IND line goes high for two seconds to indicate that the
memory has been cleared.
Transmit Mode
When any of the status lines that are set as inputs go high, the transcoder
enters Transmit Mode. It pulls the TR_PDN line high to activate the
transceiver, pulls the TR_SEL line high to place the transceiver into transmit
mode, records the states of the status lines, assembles the packet,
and sends it through the TR_DATA line. The transcoder then pulls the
TR_SEL line low to place the transceiver into receive mode and looks for a
confirmation from the remote transcoder. If a valid confirmation is received,
then the transcoder pulls the CONFIRM line high, otherwise it checks to
see if any status line inputs are high.
The transcoder continues this for as long as any of the status line inputs
are high, updating the states of the status lines with each transmission.
Once all of the input lines are pulled low, the transcoder finishes the
current transmission, pulls CONFIRM and TR_PDN low to deactivate the
transceiver, and goes to sleep.
The MT has the ability to control the status line byte through the SIE. An
external microcontroller or PC can be used to write the desired input states
and a packet counter into the transcoder. The transcoder uses this byte
instead of looking at the status line inputs, sends the specified number of
packets, then goes to sleep. This is subject to the I/O settings, so lines set
as outputs cannot be set high.
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