參數(shù)資料
型號(hào): SP37E760-MD
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 外設(shè)及接口
英文描述: 3.3 V I/O CONTROLLER FOR EMBEDDED APPLICATIONS
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: TQFP-100
文件頁數(shù): 67/78頁
文件大?。?/td> 510K
代理商: SP37E760-MD
SMSC DS – SP37E760
Page 67
Rev. 04/13/2001
9.3.1
PARALLEL PORT EPP TIMING
t18
t9
t8
t17
t12
t19
t10
t11
t13
t20
t2
t1
t5
t3
t14
t16
t4
t6
t15
t7
AX
SD<7:0>
nIOW
IOCHRDY
nWRITE
PD<7:0>
nDATAST
nADDRSTB
nWAIT
t1
t2
t3
t4
t5
t6
t7
t8
t9
t10
t11
t12
t13
t14
t15
t16
t17
t18
t19
t20
nIOW Asserted to PDATA Valid
nWAIT Asserted to nWRITE Change
nWRITE to Command Asserted
nWAIT Deasserted to Command Deasserted
nWAIT Asserted to PDATA Invalid
Time Out
Command Deasserted to nWAIT Asserted
SDATA Valid to IOW Asserted
nIOW Deasserted to DATA Invalid
nIOW Asserted to IOCHRDY Asserted
WAIT Deasserted to nIOCHRDY Deasserted
IOCHRDY Deasserted to nIOW Deasserted
nIOW Asserted to nWRITE Asserted
nWAIT Asserted to Command Asserted
Command Asserted to nWAIT Deasserted
PDATA Valid to Command Asserted
Ax Valid to nIOW Asserted
nIOW Deasserted to Ax Invalid
nIOW Deasserted to nIOW or nIOR Asserted
nWAIT Asserted to nWRITE Asserted
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
ns
ns
ns
ns
μs
ns
ns
ns
ns
ns
50
185
35
190
12
24
160
70
210
10
185
Parameter
min
max
units
0
60
5
60
0
10
0
10
0
0
60
10
0
60
0
10
40
10
40
60
Notes
1
1
1
1
1
1
NOTE:
WAIT must be filtered to compensate for ringing on the parallel bus cable. WAIT is considered to have settled
after it does not transition for a minimum of 50 nsec.
FIGURE 9 - EPP 1.9 DATA OR ADDRESS WRITE CYCLE
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