W83877 Winbond Electronics Corp America, W83877 Datasheet - Page 108

• Manufacturer Part Number: W83877
• Description: Winbond I/O
• Manufacturer: Winbond Electronics Corp America

9.3.5 Parallel Port Mode Parameters
9.3.6 EPP Data or Address Read Cycle Timing Parameters
PD0-7, INDEX , STROBE, AUTOFD Delay from
IRQ Delay from ACK , nFAULT
IRQ Delay from IOW
IRQ Active Low in ECP and EPP Modes
IOW
ERROR Active to IRQ Active
Ax Valid to IOR Asserted
IOR Deasserted to Ax Valid
IOR Deasserted to IOW or IOR Asserted
IOR Asserted to IOCHRDY Asserted
PD Valid to SD Valid
IOR Deasserted to SD Hi-Z (Hold Time)
SD Valid to IOCHRDY Deasserted
PD Hi-Z to PDBIR Set
IOR Asserted to PD Hi-Z
Command Asserted to PD Valid
Command Deasserted to PD Hi-Z
WAIT Deasserted to IOCHRDY Deasserted
WRITE Deasserted to IOR Asserted
WAIT Asserted to WRITE Deasserted
WAIT Deasserted to WRITE Modified
WAIT Asserted to PD Hi-Z
WAIT Deasserted to PD Drive
WRITE Deasserted to Command
PARAMETER
PARAMETER
IOR Deasserted
- 108 -
SYM.
t1
t2
t3
t4
t5
SYM.
t10
t13
t14
t15
t16
t17
t18
t19
t20
t21
t2
t3
t4
t5
t6
t7
t8
t9
MIN.
200
MIN.
40
10
40
60
60
60
60
0
0
0
0
0
0
0
0
0
0
1
TYP.
MAX.
MAX.
160
185
190
180
190
100
105
300
105
10
24
75
40
85
50
60
W83877F
UNIT
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
S