W83977EG Datasheet, PDF (121/142 Pages) Winbond – WINBOND ISA I/O

W83977EF-AW/W83977EG-AW
13.3.4 EPP Data or Address Read Cycle Timing Parameters
PARAMETER
Ax Valid to IOR# Asserted
IOCHRDY Deasserted to IOR# Deasserted
IOR# Deasserted to Ax Valid
IOR# Deasserted to IOW# or IOR# Asserted
IOR# Asserted to IOCHRDY Asserted
PD Valid to SD Valid
SYM.
t1
t2
t3
t4
t5
t6
IOR# Deasserted to SD Hi-Z (Hold Time)
t7
SD Valid to IOCHRDY Deasserted
t8
WAIT# Deasserted to IOCHRDY Deasserted
t9
PD Hi-Z to PDBIR Set
t10
WRITE# Deasserted to IOR# Asserted
t13
WAIT# Asserted to WRITE# Deasserted
t14
Deasserted to WRITE# Modified
t15
IOR# Asserted to PD Hi-Z
t16
WAIT# Asserted to PD Hi-Z
t17
Command Asserted to PD Valid
t18
Command Deasserted to PD Hi-Z
t19
WAIT# Deasserted to PD Drive
t20
WRITE# Deasserted to Command
t21
PBDIR Set to Command
t22
PD Hi-Z to Command Asserted
t23
Asserted to Command Asserted
t24
WAIT# Deasserted to Command Deasserted
t25
Time out
t26
PD Valid to WAIT# Deasserted
t27
PD Hi-Z to WAIT# Deasserted
t28
MIN.
40
0
10
40
0
0
0
0
60
0
0
0
60
0
60
0
0
60
1
0
0
0
60
10
0
0
MAX.
10
24
75
40
85
160
185
190
50
180
190
20
30
195
180
12
UNIT
nS
nS
nS
nS
nS
μS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
μS
-119-
Publication Release Date: Apr. 2006
Revision 1.2