FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 149

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

Enhanced Super I/O Controller with Fast IR
Datasheet
Note 21.4 FINTR refers to the IRQ used by the floppy disk.
Note 21.5 PINTR refers to the IRQ used by the parallel port.
Note 21.6 PCOBF is used for the Keyboard IRQ.
Note 21.7 AUXOBF1 is used for the Mouse IRQ.
Note 21.8 Applies only if deassertion is performed in hardware.
SMSC FDC37C672
NAME
t10
t11
t12
t13
t1
t2
t3
t4
t5
t6
t8
t8
t7
t9
PE, SLCT, ACK, BUSY
SA[x], nCS and AEN valid to nIOR asserted
nIOR asserted to nIOR deasserted
nIOR asserted to SA[x], nCS invalid
nIOR asserted to Data Valid
Data Hold/float from nIOR deasserted
nIOR deasserted
nIOR asserted after nIOW deasserted
nIOR/nIOR, nIOW/nIOW transfers from/to ECP FIFO
Parallel Port setup to nIOR asserted
nIOR asserted to PINTER deasserted
nIOR deasserted to FINTER deasserted
nIOR deasserted to PCOBF deasserted (Note 21.6, Note 21.8)
nIOR deasserted to AUXOBF1 deasserted (Note 21.7, Note 21.8)
nIOW deasserted to AEN invalid
PD[x], nERROR,
nIOR/nIOW
SA[x], nCS
AUXOBF1
PINTER
FINTER
PCOBF
SD[x]
nIOR
AEN
DESCRIPTION
Table 21.1 - ISA Read Timing Parameters
t1
DATASHEET
Figure 21.4 - ISA Read
t7
t4
Page 149
t3
t9
DATA VALID
t2
t8
MIN
150
10
50
10
10
25
80
10
t13
t5
t10
t11
t12
TYP
MAX
t6
260
50
25
20
55
80
80
Rev. 10-29-03
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns