FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 154

• Manufacturer Part Number: FDC37C669_07
• Description: PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
• Manufacturer: SMSC [SMSC Corporation]

FIGURE 16B - EPP 1.9 DATA OR ADDRESS READ CYCLE TIMING PARAMETERS
1 . n WAIT is consi dere d to ha ve settled a fter it does no t transition for a min imum of 50 ns.
2. When not executing a write cycle, EPP nWRITE is in acti ve h igh .
3. 8 5 is tru e o nly if t7 = 0 .
t10
t11
t12
t13
t14
t15
t16
t17
t18
t19
t20
t21
t22
t25
t28
t1
t2
t3
t4
t5
t6
t7
t8
t9
PDATA Hi-Z to Comman d Asserted
nIOR Asserted to PD ATA Hi -Z
nWAIT Deasser ted to Comma nd
Dea sserted
Comma nd Dea sserted to PDATA Hi-Z
C ommand Asser ted to PDATA Val id
PDAT A Hi-Z to n WAIT Deasserted
PDATA Val id to n WAIT Deasserted
n IOR Assertd to IOCHRDY Asserted
nWR ITE Deasser te d to n IOR Asserted
nWAIT Deasserted to IOCHRD Y
Dea sserted
IOCHRDY Dea sse rted to n IOR
Dea sserted
nIOR De asserted to SDATA Hi-Z (Ho ld
Time)
PD ATA Valid to SDATA Val id
nWAIT Asserted to Comman d Asserted
Time Ou t
nWAIT De asserted to PDATA D riven
nWAIT Deasser ted to nWRITE Modi fied
SDATA Val id to IOCHR D Y Dea sserted
Ax Vali d to nIOR Asserted
nIOR Deasserted to Ax Invalid
nWAIT Asserted to nWRITE Deasserted
nIOR D easser te d to nIOW or nIOR
Asserted
n WAIT Asserted to PDATA Hi-Z
WRITE Deasserted to Co mma nd
Parameter
154
min
60
60
10
60
60
40
10
40
60
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
max
1 80
1 60
1 95
1 90
1 90
1 85
1 80
30
50
24
40
75
12
85
10
units
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1,2
1
2
1
1
3
1