W83977EF Datasheet, PDF (132/150 Pages) Winbond – WINBOND I/O

W83977EF
11.3.6 Parallel Port FIFO Timing Parameters
PARAMETER
SYMBOL
DATA Valid to nSTROBE Active
t1
nSTROBE Active Pulse Width
t2
DATA Hold from nSTROBE Inactive
t3
BUSY Inactive to PD Inactive
t4
BUSY Inactive to nSTROBE Active
t5
nSTROBE Active to BUSY Active
t6
MIN.
600
600
450
80
680
MAX.
500
UNIT
nS
nS
nS
nS
nS
nS
11.3.7 ECP Parallel Port Forward Timing Parameters
PARAMETER
SYMBOL MIN.
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
BUSY Deasserted to nSTROBE Asserted
nSTROBE Asserted to BUSY Asserted
BUSY Asserted to nSTROBE Deasserted
t1
0
t2
0
t3
80
t4
80
t5
0
t6
80
t7
0
t8
80
MAX.
60
60
180
180
200
180
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
11.3.8 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
nS
nS
nS
nS
nS
nS
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Publication Release Date: April 2003
Revision 1.1