w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 176

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

15.3.3 Parallel Port Mode Parameters
15.3.4 EPP Data or Address Read Cycle Timing Parameters
PD0-7,
IRQ Delay from
IRQ Delay from
IRQ Active Low in ECP and EPP Modes
IOW
ERROR
Ax Valid to
IOCHRDY Deasserted to
IOR
IOR
IOR
PD Valid to SD Valid
IOR
SD Valid to IOCHRDY Deasserted
PD Hi-Z to PDBIR Set
IOR
Command Asserted to PD Valid
Command Deasserted to PD Hi-Z
PBDIR Set to Command
PD Hi-Z to Command Asserted
Time out
PD Valid to
PD Hi-Z to
WAIT
WRITE
WAIT
WAIT
WAIT
WRITE
WAIT
Deasserted to
Asserted to Command Asserted
Deasserted to Ax Valid
Deasserted to
Asserted to IOCHRDY Asserted
Deasserted to SD Hi-Z (Hold Time)
Asserted to PD Hi-Z
INDEX
Deasserted to IOCHRDY Deasserted
Asserted to
Asserted to PD Hi-Z
Deasserted to PD Drive
Deasserted to Command Deasserted
Deasserted to
Deasserted to Command
Active to IRQ Active
IOR
WAIT
WAIT
,
WRITE
ACK
IOW
STROBE
Asserted
Deasserted
Deasserted
WRITE
IOW
PARAMETER
, nFAULT
PARAMETER
IOR
Modified
IOR
or
,
IOR
Deasserted
AUTOFD
Asserted
Deasserted
Asserted
Delay from
- 168 -
W83977ATF/W83977ATG
SYM.
t1
t2
t3
t4
t5
SYM.
t10
t13
t14
t15
t16
t17
t18
t19
t20
t21
t22
t23
t24
t25
t26
t27
t28
t1
t2
t3
t4
t5
t6
t7
t8
t9
MIN.
200
MIN.
40
10
40
60
60
60
60
60
10
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
TYP.
MAX.
MAX.
160
185
190
180
190
195
180
10
24
75
40
85
50
20
30
12
100
105
300
105
60
UNIT
UNIT
μS
μS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS