XRT79L71IB datasheet(94/109 Pages) EXAR

tên linh kiện	XRT79L71IB

Giải thích chi tiết về linh kiện	1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE

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XRT79L71

1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - HARDWARE

REV. 1.0.0

TRANSMIT UTOPIA INTERFACE

The purpose of the Transmit UTOPIA Interface block is to function as either a Standard UTOPIA Level 1, 2 or 3

Interface as it accepts ATM cell data from either an ATM Layer or ATM Adaptation Layer Processor, and routes

this ATM cell data to the TxFIFO within the XRT79L71.

FIGURE 16. TIMING DIAGRAM FOR THE TRANSMIT UTOPIA INTERFACE BLOCK

TABLE 15: TIMING INFORMATION FOR THE TRANSMIT UTOPIA INTERFACE BLOCK

SYMBOL

PARAMETER

MIN.

TYP

MAX.

UNITS

TxUData[15:0] to rising edge of TxUClk Setup Time

TxUData[15:0] Hold Time from rising edge of TxUClk

TxUTOPIA Write Enable Setup Time to rising edge of TxUClk

TxUTOPIA Write Enable Hold Time from rising edge of TxUClk

TxUPrty Setup Time to rising edge of TxUClk

TxUPrty Hold Time from rising edge of TxUClk

TxUSoC Setup Time to rising edge of TxUClk

TxUSoC Hold Time from rising edge of TxUClk

TxUAddr[4:0] Setup Time to rising edge of TxUClk

t10

TxUAddr[4:0] Hold Time from rising edge of TxUClk

TxUData[15:0]

TxUEn*

TxUPrty

TxUSoC

TxUClk

TxUClav

t11

t12

VALID DATA

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