FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 155

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

1 . WRITE is controlled by clearing the PDIR b it to "0" in the contro l register be fore
2. This number is only valid i f WAIT is active whe n nIOW g oes active.
t 10
t 11
t 12
t 13
t 16
t 17
t 18
t 19
t 20
t 21
t1
t2
t3
t4
t5
t6
t8
t9
performin g an EPP Write.
nAD DRSTB
IOCHRD Y
nDATAST
SD<7:0>
PD<7:0>
nWRITE
FIGURE 17 - EPP 1.7 DATA OR ADDRESS WRITE CYCLE
nWAIT
nIOW
nIOW Ass erted t o PDA T A V alid
Command D esssert ed to nWRI TE Change
n WRITE to Command
nI OW De ass erted to Co m mand De assert ed
Command Deasserted to PDATA Invalid
Time Out
SDATA Valid t o nIOW As sert ed
nIOW Deasserted to DATA Inv alid
n IOW Ass erted t o IOCHRDY As se rt ed
n WAIT Deassert ed to IOCHRDY Deas sert ed
I OCH RDY Deassert ed to nIOW De assert ed
nIOW As serted to nW RITE Asserted
PDA TA Valid to Comm and As se rt ed
Ax Valid to nIOW As sert ed
nIOW De as serted to Ax Inv alid
nIOW Deasserted to nIOW or nIOR Asserted
n WAIT As serted to IOCHRD Y Deasserted
Command Deasserted to nWAIT Deas sert ed
A X
Param eter
t17
t 8
t13
t 1
t20
t10
t 3
t16
155
t 6
min
100
50
10
10
10
10
40
10
0
0
5
0
0
0
0
t11
max
t12
50
40
35
50
12
24
40
50
35
45
t18
t 9
t 4
t19
units
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
t 2
t 5
t21
N ot es
2