XRT82L24A Datasheet, PDF (34/39 Pages) Exar Corporation – QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

XRT82L24A
QUAD E1 LINE TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.1.2
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Motorola Interface Timing
The signals used in the Motorola microprocessor in-
terface mode are: Address Strobe (AS), Data Strobe
(DS), Read/Write Enable (R/W), Chip Select (CS),
Address and Data bits. The interface is compatible
with the timing of a Motorola 68000 microprocessor
family with up to 16.67 MHz clock frequency. The in-
terface timing is shown in Figure 19, Figure 20 and
Figure 21. The I/O specifications are shown in
Table 16.
FIGURE 19. MICROPROCESSOR INTERFACE TIMING - MOTOROLA TYPE PROGRAMMED I/O READ OPERATION
t78
ALE_AS
A[8:0]
CS
D[7:0]
RD_DS
WR_RW
RDY_DTCK
Address of Target Register
Not Valid
Valid Data
t79
t80
FIGURE 20. MICROPROCESSOR INTERFACE TIMING - MOTOROLA TYPE PROGRAMMED I/O WRITE OPERATION
t78
ALE_AS
A[8:0]
CS
D[7:0]
RD_DS
WR_RW
RDY_DTCK
Address of Target Register
t81
Data to be Written
t82
32