W83787IF Datasheet, PDF (92/123 Pages) Winbond – WINBOND I/O WITH SERIAL-INFRARED SUPPORT

W83787IF
8.3.7 EPP Data or Address Write Cycle Timing Parameters, continued
PARAMETER
Time out
Command Deasserted to WAIT Asserted
IOW Deasserted to WRITE Deasserted and PD
invalid
SYM.
t20
t21
t22
8.3.8 Parallel Port FIFO Timing Parameters
PARAMETER
DATA Valid to nSTROBE Active
nSTROBE Active Pulse Width
DATA Hold from nSTROBE Inactive
BUSY Inactive to PD Inactive
BUSY Inactive to nSTROBE Active
nSTROBE Active to BUSY Active
SYMBOL
t1
t2
t3
t4
t5
t6
MIN.
10
0
0
MIN.
600
600
450
80
680
MAX.
12
MAX.
500
8.3.9 ECP Parallel Port Forward Timing Parameters
PARAMETER
SYMBOL
nAUTOFD Valid to nSTROBE Asserted
t1
PD Valid to nSTROBE Asserted
t2
BUSY Deasserted to nAUTOFD Changed
t3
BUSY Deasserted to PD Changed
t4
nSTROBE Deasserted to BUSY Deasserted
t5
BUSY Deasserted to nSTROBE Asserted
t6
nSTROBE Asserted to BUSY Asserted
t7
BUSY Asserted to nSTROBE Deasserted
t8
MIN.
0
0
80
80
0
80
0
80
MAX.
60
60
180
180
200
180
8.9.10 ECP Parallel Port Reverse Timing Parameters
PARAMETER
SYMBOL
PD Valid to nACK Asserted
t1
nAUTOFD Deasserted to PD Changed
t2
nAUTOFD Asserted to nACK Asserted
t3
nAUTOFD Deasserted to nACK Deasserted
t4
nACK Deasserted to nAUTOFD Asserted
t5
PD Changed to nAUTOFD Deasserted
t6
MIN.
0
0
0
0
80
80
MAX.
200
200
UNIT
µS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
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Publication ReleaseDate:Sep 1995
Revision A1