FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 158

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

Note 21.13 nWAIT must be filtered to compensate for ringing on the parallel bus cable. WAIT is considered to have
SMSC FDC37C672
NAME
t10
t11
t12
t13
t14
t15
t16
t17
t18
t19
t20
t21
t22
t1
t2
t3
t4
t5
t6
t7
t8
t9
nIOW Asserted to PDATA Valid
nWAIT Asserted to nWRITE Change (Note 21.13)
nWRITE to Command Asserted
nWAIT Deasserted to Command Deasserted (Note 21.13)
nWAIT Asserted to PDATA Invalid (Note 21.13)
Time Out
Command Deasserted to nWAIT Asserted
SDATA Valid to nIOW Asserted
nIOW Deasserted to DATA Invalid
nIOW Asserted to IOCHRDY Asserted
nWAIT Deasserted to IOCHRDY Deasserted (Note 21.13)
IOCHRDY Deasserted to nIOW Deasserted
nIOW Asserted to nWRITE Asserted
nWAIT Asserted to Command Asserted (Note 21.13)
Command Asserted to nWAIT Deasserted
PDATA Valid to Command Asserted
Ax Valid to nIOW Asserted
nIOW Asserted to Ax Invalid
nIOW Deasserted to nIOW or nIOR Asserted
nWAIT Asserted to nWRITE Asserted (Note 21.13)
nWAIT Asserted to PDIR Low
PDIR Low to nWRITE Asserted
settled after it does not transition for a minimum of 50 nsec.
Table 21.2 - EPP 1.9 Data or Address Cycle Timing Parameters
DESCRIPTION
DATASHEET
Page 158
MIN
60
60
10
10
60
10
60
10
40
10
40
60
0
5
0
0
0
0
0
0
0
0
Enhanced Super I/O Controller with Fast IR
TYP
MAX
185
190
160
210
185
50
35
12
24
70
10
Rev. 10-29-03
UNITS
Datasheet
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns