PEB 20320
Introduction
Pin Definitions and Functions (cont’d)
Pin No.
Symbol
P-MQFP-160-1
90
W/R
Input (I) Function
Output (O)
O
Write/Read (Intel bus mode)
This signal distinguishes write from read
operations.
R/W
O
Read/Write (Motorola bus mode)
This signal distinguishes between read
and write operations.
In both cases this signal is tristate when
unused.
75
READY
I
Ready (Intel bus mode)
This signal indicates that the current bus
cycle is complete. When READY is
asserted during a read cycle the
MUNICH32 latches the input data and
terminates the cycle. When READY is
asserted during a write cycle the
MUNICH32 terminates the cycle.
DSACK
I
Data Transfer Acknowledge (Motorola
bus mode)
This active low input indicates that a data
transfer may be performed. During a read
cycle data becomes valid at the falling
edge of DSACK. The data is latched
internally and the bus cycle is terminated.
During a write cycle the falling edge of
DSACK marks the latching of data and the
bus cycle is terminated.
User’s Manual
15
01.2000