W83877TF Datasheet, PDF (81/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
9.3.6 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.
600
600
450
80
680
MAX.
500
UNIT
nS
nS
nS
nS
nS
nS
9.3.7 ECP Parallel Port Forward Timing Parameters
PARAMETER
nAUTOFD Valid to nSTROBE Asserted
PD Valid to nSTROBE Asserted
BUSY Deasserted to nAUTOFD Changed
BUSY Deasserted to PD Changed
nSTROBE Deasserted to BUSY Deasserted
SYMBOL
t1
t2
t3
t4
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
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
9.3.8 ECP Parallel Port Reverse Timing Parameters
PARAMETER
PD Valid to nACK Asserted
SYMBOL
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
nS
nS
nS
nS
nS
nS
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Publication Release Date: March 1998
Version 0.61