W83877TF Datasheet, PDF (79/154 Pages) Winbond – I/O chip disk drive adapter

W83877TF
9.3.4 EPP Data or Address Read Cycle Timing Parameters
PARAMETER
SYM.
Ax Valid to IOR Asserted
t1
IOCHRDY Deasserted to IOR Deasserted
t2
IOR Deasserted to Ax Valid
t3
IOR Deasserted to IOW or IOR Asserted
t4
IOR Asserted to IOCHRDY Asserted
t5
PD Valid to SD Valid
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
UNIT
nS
nS
nS
24
nS
75
nS
40
µS
85
nS
160
nS
nS
nS
185
nS
190
nS
50
nS
180
nS
nS
nS
190
nS
nS
20
nS
30
nS
195
nS
180
nS
12
nS
nS
µS
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Publication Release Date: March 1998
Version 0.61