XRT83SH38 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT83SH38' PDF : 78 Pages View PDF
REV. 1.0.7
XRT83SH38
8-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
TABLE 17: MOTOROLA MODE: MICROPROCESSOR INTERFACE SIGNALS
XRT83SH38 MOTOROLA
TYPE
PIN NAME EQUIVALENT PIN
DESCRIPTION
ALE
AS
I Address Strobe: This active high signal is used to latch the contents on the
address bus ADDR[7:0]. The contents of the address bus are latched into the
ADDR[7:0] inputs on the falling edge of TS.
WR_R/W
R/W
I Read/Write: This input pin from the local µP is used to inform the LIU
whether a Read or Write operation has been requested. When this pin is
pulled “High”, DS will initiate a read operation. When this pin is pulled
“Low”, DS will initiate a write operation.
RD_DS
DS
I Data Strobe: This active low input functions as the read or write signal from the
local µP dependent on the state of R/W. When DS is pulled “Low” (If CS
is “Low”) the LIU begins the read or write operation.
RDY
DTACK
O Data Transfer Acknowledge: This active low signal is provided by the LIU
device. It indicates that the current read or write cycle is complete, and the LIU is
waiting for the next command.
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