FDC37B78X View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
FDC37B78X
SMSC -> Microchip
FDC37B78X Datasheet PDF : 258 Pages
| |||
TABLE 103 - EPP 1.9 DATA OR ADDRESS READ CYCLE TIMING
NAME
DESCRIPTION
MIN TYP MAX UNITS
t1 PDATA Hi-Z to Command Asserted
0
30
ns
t2 nIOR Asserted to PDATA Hi-Z
0
50
ns
t3 nWAIT Deasserted to Command Deasserted
60
180
ns
(Note 1)
t4 Command Deasserted to PDATA Hi-Z
0
ns
t5 Command Asserted to PDATA Valid
0
ns
t6 PDATA Hi-Z to nWAIT Deasserted
0
s
t7 PDATA Valid to nWAIT Deasserted
0
ns
t8 nIOR Asserted to IOCHRDY Asserted
0
24
ns
t9 nWRITE Deasserted to nIOR Asserted (Note 2)
0
ns
t10 nWAIT Deasserted to IOCHRDY Deasserted
60
160
ns
(Note 1)
t11 IOCHRDY Deasserted to nIOR Deasserted
0
ns
t12 nIOR Deasserted to SDATA Hi-Z (Hold Time)
0
40
ns
t13 PDATA Valid to SDATA Valid
0
75
ns
t14 nWAIT Asserted to Command Asserted
0
195
ns
t15 Time Out
10
12
s
t16 nWAIT Deasserted to PDATA Driven (Note 1)
60
190
ns
t17 nWAIT Deasserted to nWRITE Modified (Notes 1,2)
60
190
ns
t18 SDATA Valid to IOCHRDY Deasserted (Note 3)
0
85
ns
t19 Ax Valid to nIOR Asserted
40
ns
t20 nIOR Deasserted to Ax Invalid
10
10
ns
t21 nWAIT Asserted to nWRITE Deasserted
0
185
ns
t22 nIOR Deasserted to nIOW or nIOR Asserted
40
ns
t23 nWAIT Asserted to PDIR Set (Note 1)
60
185
ns
t24 PDATA Hi-Z to PDIR Set
0
ns
t25 nWAIT Asserted to PDATA Hi-Z (Note 1)
60
180
ns
t26 PDIR Set to Command
0
20
ns
t27 nWAIT Deasserted to PDIR Low (Note 1)
60
180
ns
t28 nWRITE Deasserted to Command
1
ns
Note 1 nWAIT is considered to have settled after it does not transition for a minimum of 50 ns.
Note 2 When not executing a write cycle, EPP nWRITE is inactive high.
Note 3 85 is true only if t7 = 0.
244
Share Link: 