XRT72L56 Datasheet, PDF (54/486 Pages) Exar Corporation – SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER

XRT72L56
SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER
REV. P1.1.2
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PRELIMINARY
AC ELECTRICAL CHARACTERISTICS (CONT.)
Test Conditions: TA = 25(C, VCC = 3.3V + 5% unless otherwise specified
SYMBOL
PARAMETER
MIN. TYP.
MAX.
t₇₉ Rising edge of RD_DS to rising edge of RDY_DTCK 0
delay
t₈₀ Rising edge of RDY_DTCK to tri-state of D[7:0]
0
Microprocessor Interface - Motorola Read & Write Operations (See Figure 22)
t₇₈ A11 - A0 Setup Time to falling edge of ALE_AS
5
t₈₁ D[7:0] Set-up time to falling edge of RD_DS
10
t₈₂ Rising edge of RD_DS to rising edge of RDY_DTCK 0
delay
Reset Pulse Width - Both Motorola and Intel Operations (See Figure 23)
t₉₀ Reset pulse width
200
UNITS
ns
ns
ns
ns
ns
ns
CONDITIONS
35