FDC37C665GT_07 SMSC [SMSC Corporation], FDC37C665GT_07 Datasheet - Page 148

• Manufacturer Part Number: FDC37C665GT_07
• Description: High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
• Manufacturer: SMSC [SMSC Corporation]

open-collector), the drivers are dynamically
changed from open-collector to totem-pole. The
timing for the dynamic driver change is specified
in the IEEE 1284 Extended Capabilities Port
Protocol
nSTROBE
1. The data is held until BUSY goes inactive or for time t3, whichever is longer. This only
PDATA
BUSY
t1
t2
t3
t4
t5
t6
applies if another data transfer is pending. If no other data transfer is pending, the data
is held indefinitely.
DATA Valid to nSTROBE Active
nSTROBE Active Pulse Width
DATA Hold from nSTROBE Inactive
nSTROBE Active to BUSY Active
BUSY Inactive to nSTROBE Active
BUSY Inactive to PDATE Invalid
and
FIGURE 17 - PARALLEL PORT FIFO TIMING
Parameter
ISA
t1
Interface
148
t4
Standard, Rev. 1.09, Jan. 7, 1993, available
from Microsoft. The dynamic driver change
must be implemented properly to prevent
glitching the outputs.
t2
min
600
600
450
680
80
max
500
t3
units
ns
ns
ns
ns
ns
ns
t6
t5
Notes
1
1