SP37E760 Datasheet, PDF (69/78 Pages) SMSC Corporation – 3.3 V I/O CONTROLLER FOR EMBEDDED APPLICATIONS

Parameter
min
max
units Notes
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
60
180
ns
1
Deasserted
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
µs
t7 PDATA Valid to nWAIT Deasserted
0
ns
t8 nIOR Assertd to IOCHRDY Asserted
0
24
ns
t9 nWRITE Deasserted to nIOR Asserted
0
ns
2
t10 nWAIT Deasserted to IOCHRDY
60
160
ns
1
Deasserted
t11 IOCHRDY Deasserted to nIOR
0
ns
Deasserted
t12 nIOR Deasserted to SDATA Hi-Z (Hold
0
40
ns
Time)
t13 PDATA Valid to SDATA Valid
0
75
ns
t14 nWAIT Asserted to Command Asserted
0
195
ns
t15 Time Out
10
12
µs
t16 nWAIT Deasserted to PDATA Driven
60
190
ns
1
t17 nWAIT Deasserted to nWRITE Modified
60
190
ns
1,2
t18 SDATA Valid to IOCHRDY Deasserted
0
85
ns
3
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
t25 ^Asserted
t28 ^{nWAIT Asserted to PDATA Hi-Z}
WRITE Deasserted to Command
40
ns
60
180
ns
1
1
ns
NOTES:
1. n WAIT is considered to have settled after it does not transition for a minimum of 50 ns.
2. When not executing a write cycle, EPP nWRITE is inactive high.
3. 85 is true only if t7 = 0.
FIGURE 11 - EPP 1.9 DATA OR ADDRESS READ CYCLE TIMING PARAMETERS
SMSC DS – SP37E760
Page 69
Rev. 04/13/2001