XRT72L13 datasheet(55/370 Pages) EXAR

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XRT72L13

M13 MULTIPLEXER/CLEAR CHANNEL DS3 FRAMER IC

PRELIMINARY

REV. P1.0.6

t78

A8 - A0 Setup Time to falling edge of ALE_AS

t79

A8 - A0 risinfg edge of RD_DS to rising edge of

RDY_DTCK delay

0ns

t80

Rising edge of RDY_DTCK to tri-state of D[7:0]

Microprocessor Interface - Motorola Write Operations (See Figure 21)

t78

A8 -A0 Set-up time to falling edge of ALE_AS

t81

D[7:0] Set-up time to falling edge of RD_DS

t82

Rising edge of RD_DS to rising edge of RDY_DTCK

Reset Pulse Width - Both Motorola and Intel Operations (See Figure 24)

t90

Reset pulse width

200

AC ELECTRICAL CHARACTERISTICS (CONT.)

Test Conditions: TA = 25(C, VCC = 3.3V + 5% unless otherwise specified

SYMBOL

PARAMETER

MIN.TYP.MAX.UNITS

CONDITIONS

FIGURE 2. TIMING DIAGRAM FOR TRANSMIT PAYLOAD INPUT INTERFACE, WHEN THE XRT72L13 IS OPERATING IN

BOTH THE

DS3 AND LOOP-TIMING MODES

XRT72L13 Transmit Payload Data I/F Signals

RxOutClk

TxSer

TxFrame

TxOH_Ind

Payload[4702]

Payload[4703]

X-Bit

Payload[0]

DS3 Frame Number N

DS3 Frame Number N + 1

XRT72L13 Datasheet(PDF) 55 Page - Exar Corporation

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