W83977EG Datasheet, PDF (123/142 Pages) Winbond – WINBOND ISA I/O

W83977EF-AW/W83977EG-AW
13.3.6 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
13.3.7 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
SYMBOL
t1
t2
t3
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
13.3.8 ECP Parallel Port Reverse Timing Parameters
PARAMETER
PD Valid to nACK Asserted
SYMBOL
t1
MIN.
0
nAUTOFD Deasserted to PD Changed
t2
0
nAUTOFD Asserted to nACK Asserted
nAUTOFD Deasserted to nACK Deasserted
nACK Deasserted to nAUTOFD Asserted
PD Changed to nAUTOFD Deasserted
t3
0
t4
0
t5
80
t6
80
MAX.
500
MAX.
60
60
180
180
200
180
MAX.
200
200
UNIT
nS
nS
nS
nS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
UNIT
nS
nS
nS
nS
nS
nS
-121-
Publication Release Date: Apr. 2006
Revision 1.2