FDC37C932APM View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
FDC37C932APM
SMSC -> Microchip
FDC37C932APM Datasheet PDF : 280 Pages
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open-collector), the drivers are dynamically
changed from open-collector to totem-pole. The
timing for the dynamic driver change is
specified in then IEEE 1284 Extended
Capabilities Port Protocol and ISA Interface
Standard, Rev. 1.14, July 14, 1993, available
from Microsoft. The dynamic driver change
must be implemented properly to prevent
glitching the outputs.
PDATA
nSTROBE
t6
t3
t1
t2
t5
t4
BUSY
FIGURE 34 - PARALLEL PORT FIFO TIMING
NAME
DESCRIPTION
MIN TYP MAX UNITS
t1 DATA Valid to nSTROBE Active
600
ns
t2 nSTROBE Active Pulse Width
600
ns
t3 DATA Hold from nSTROBE Inactive (Note 1)
450
ns
t4 nSTROBE Active to BUSY Active
500
ns
t5 BUSY Inactive to nSTROBE Active
680
ns
t6 BUSY Inactive to PDATA Invalid (Note 1)
80
ns
Note 1: The data is held until BUSY goes inactive or for time t3, whichever is longer. This only
applies if another data transfer is pending. If no other data transfer is pending, the data is
held indefinitely.
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