FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 142

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

(DO-D7)
FD RQ,
P DRQ
FDA CKX
PDA CKX
DATA
nIOW
nIOR
AEN
TC
or
t10
t11
t12
t13
t14
t15
t16
t1
t2
t3
t4
t5
t6
t7
t8
t9
NOTE: FDRQ refers to the DRQ assigned to the Floppy Disk
n DACK Delay Time from FDRQ High
DR Q Rese t Del ay fro m nIOR or nIOW
FDRQ Reset Delay from nDACK Low
nDACK Wid th
nIOR Delay from FDRQ High
n IOW De lay from FDRQ High
Da ta Access Time from n IOR Low
Data Set Up Time to nIOW High
D ata to Float Delay from nIOR High
Data Hold Time from nIOW High
n DACK Set Up to nIOW/n IOR Low
n DACK Hold Afte r nIOW/nIOR High
TC Pulse Width
AEN Set Up to nIOR/nIOW
AEN Ho ld from n DACK
TC Active to PDRQ Inactive
PDRQ refers to the DRQ assigned to the Parall el Port
FDACKX r ef ers to t he DRQ as si gned to the to the Floppy Disk
PDACKX refers to the DRQ assigned to the Parallel Por t
Parameter
t14
FIGURE 5 - DMA TIMING
t1
t6
t5
t11
t3
142
t16
t2
t7
t13
min
150
40
10
10
10
60
40
10
t4
0
0
0
5
t8
DATA VA LID
typ
t12
max
100
100
100
100
60
t10
t9
t15
units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns