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參數(shù)資料
| 型號(hào)： | XRT79L74 |
| 廠商： | Exar Corporation |
| 英文描述： | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| 中文描述： | 4 -通道DS3/E3自動(dòng)柜員機(jī)用戶到網(wǎng)絡(luò)接口/ Combo IC對(duì)購(gòu)買力平價(jià) |
| 文件頁(yè)數(shù)： | 32/70頁(yè) |
| 文件大?。?/td> | 547K |
| 代理商： | XRT79L74 |
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XRT79L74
REV. P1.0.0
PRELIMINARY
4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
30
N1
J24
P1
L25
RxPOH1/
RxSer1
RxPOH2/
RxSer2
RxPOH3/
RxSer3
RxPOH4/
RxSer4
O
O
O
O
Receive PLCP Path Overhead Output pin/Receive Serial Output pin:
The function of these outputs depend upon whether the XRT79L74 has been
configured to operate in the ATM/PLCP Mode or in the Clear-Channel Framer
Mode.
ATM/PLCP Mode - RxPOH:
These output pins along with the RxPOHClk, RxPOHFrame and RxPOHIns
pins comprise the Receive PLCP Frame POH Byte serial output port. For each
PLCP frame, that is received by the Receive PLCP Processor, this serial output
port will output the contents of all 12 POH (Path Overhead) bytes. The data that
is output via these pins are updated on the rising edge of the RxPOHClk output
clock signals. The RxPOHFrame pin will pulse "High" whenever the first bit of
the Z6 byte is being output via these output pins.
Clear-Channel Framer Mode - RxSer:
If the XRT79L74 is configured to operate in the Clear-Channel Framer/Serial
Mode, then the chip will output all received data, via these output pins. These
output signals will be updated upon the rising edge of RxClk.
N
OTE
:
The user should either configure the XRT79L74 to operate in the
Gapped-Clock Mode, or validate the sampling of each bit from the
RxSer output with the state of RxOHInd’ output pin, in order to prevent
the local terminal equipment from sampling overhead bits.
These output pins are only active if the XRT79L74 has been configured to oper-
ate in the ATM/PLCP or the Clear-Channel Framer/Serial Mode. These pins
are inactive for all remaining modes of operation.
P
IN
#
N
AME
TYPE
D
ESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT79L74IB | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000ID | Clock Synchronizer/Adapter for Communications |
| XRT8000 | Clock Synchronizer/Adapter for Communications(用于通訊的時(shí)鐘同步設(shè)備/調(diào)整器) |
| XRT8001 | WAN Clock for T1 and E1 Systems |
| XRT8001ID | WAN Clock for T1 and E1 Systems |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT79L74IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
| XRT8000_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
| XRT8000D | 制造商:EXAR 制造商全稱:EXAR 功能描述:CLOCK SYNCHRONIZER/ADAPTER FOR COMMUNICATIONS |
| XRT8000ES | 功能描述:鎖相環(huán) - PLL WAN CLOCK RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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