FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 162

• Manufacturer Part Number: FDC37C672QFP
• Description: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
• Manufacturer: SMSC Corporation

Note 21.17 nWRITE is controlled by clearing the PDIR bit to "0" in the control register before performing an EPP
Note 21.18 The number is only valid if nWAIT is active when IOW goes active.
SMSC FDC37C672
NAME
t10
t11
t12
t13
t16
t17
t18
t19
t20
t21
t1
t2
t3
t4
t5
t6
t8
t9
nIOW Asserted to PDATA Valid
Command Deasserted to nWRITE Change
nWRITE to Command
nIOW Deasserted to Command Deasserted (Note 21.18)
Command Deasserted to PDATA Invalid
Time Out
SDATA Valid to nIOW Asserted
nIOW Deasserted to DATA Invalid
nIOW Asserted to IOCHRDY Asserted
nWAIT Deasserted to IOCHRDY Deasserted
IOCHRDY Deasserted to nIOW Deasserted
nIOW Asserted to nWRITE Asserted
PDATA Valid to Command Asserted
Ax Valid to nIOW Asserted
nIOW Deasserted to Ax Invalid
nIOW Deasserted to nIOW or nIOR Asserted
nWAIT Asserted to IOCHRDY Deasserted
Command Deasserted to nWAIT Deasserted
Write.
Table 21.4 - EPP 1.7 Data or Address Write Cycle Parameters
DESCRIPTION
DATASHEET
Page 162
MIN
100
50
10
10
10
10
40
10
0
0
5
0
0
0
0
Enhanced Super I/O Controller with Fast IR
TYP
MAX
50
40
35
50
12
24
40
50
35
45
Rev. 10-29-03
UNITS
Datasheet
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns