參數資料
型號: XRT79L72
廠商: Exar Corporation
英文描述: 2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
中文描述: 2 -通道DS3/E3自動柜員機用戶到網絡接口/ Combo IC對購買力平價
文件頁數: 24/72頁
文件大小: 441K
代理商: XRT79L72
XRT79L72
REV. P1.0.2
PRELIMINARY
2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
xr
21
B10
TxUClk/
TxPClk
I
Transmit UTOPIA Interface Clock/Transmit POS-PHY Interface Clock Input:
The function of this input pin depends upon whether the XRT79L72 has been
configured to operate in the ATM UNI or in the PPP Mode.
ATM UNI Mode - TxUClk:
The Transmit UTOPIA Interface clock is used to latch the data on the Transmit
UTOPIA Data bus, into the Transmit UTOPIA Interface block. This clock signal
is also used as the timing source for circuitry used to process the ATM cell data
into and through the TxFIFO.
During Multi-PHY operation, the data on the Transmit UTOPIA Address bus pins
is sampled on the rising edge of TxUClk.
PPP Mode - TxPClk:
The Transmit POS-PHY Interface clock is used to latch the data on the Transmit
POS-PHY Data bus, into the Transmit POS-PHY Interface block. This clock sig-
nal is also used as the timing source for circuitry used to process the Packet data
into and through the TxFIFO.
N
OTE
:
The XRT79L72 device can support TxUClk or TxPClk clock frequencies
of up to 50MHz.
P
IN
#
N
AME
TYPE
D
ESCRIPTION
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相關代理商/技術參數
參數描述
XRT79L72IB 制造商:EXAR 制造商全稱:EXAR 功能描述:2 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
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XRT79L74 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
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