English
Language : 

XRT79L74 Datasheet, PDF (49/70 Pages) Exar Corporation – 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
◁
PRELIMINARY
4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
XRT79L74
REV. P1.0.0
MICROPROCESSOR INTERFACE TIMING - ASYNCHRONOUS MOTOROLA (68K)
MODE
FIGURE 4. ASYNCHRONUS MODE 2 - MOTOROLA 68K PROGRAMMED I/O TIMING (WRITE CYCLE)
CS
ALE_AS
A[14:0]
D[7:0]
RD_DS
WR_R/W
RDY_DTACK
t0
t1
Address
t2
Data
t3
t4
NOTE: The values for "t0" through "t7" can be found in Table 3.
FIGURE 5. ASYNCHRONUS MODE 2 - MOTOROLA 68 PROGRAMMED I/O TIMING (READ CYCLE)
CS
ALE_AS
A[14:0]
D[7:0]
RD_DS
WR_R/W
RDY_DTACK
t0
t1
Address
t5
t7
Data
t6
NOTE: The values for "t0" through "t7" can be found in Table 3.
47
 ▷