參數(shù)資料
型號: 37C669
廠商: SMSC Corporation
英文描述: DIODE SCHOTTKY SINGLE 25V 200mW 0.5V-vf 200mA-IFM 30mA-IF 2uA-IR SOD-323 3K/REEL
中文描述: 電腦98/99順從超級I / O軟盤控制器與紅外線支持
文件頁數(shù): 63/164頁
文件大?。?/td> 621K
代理商: 37C669
155
FIGURE 17 - EPP 1.7 DATA OR ADDRESS WRITE CYCLE
t18
t 9
t 8
t17
t 6
t12
t19
t10
t20
t11
t13
t 2
t 1
t 5
t 3
t16
t 4
t21
AX
SD<7:0>
nIOW
IOCHRDY
nWRITE
PD<7:0>
nDATAST
nADDRSTB
nWAIT
nIOW Ass ertedt o PDATA Valid
Command D esssert ed to nWRI TE Change
n WRITE to Command
nI OW De ass erted to Co mmand De assert ed
Command Deasserted to PDATA Invalid
Time Out
SDATA Validt o nIOW As sert ed
nIOW Deasserted to DATA Inv alid
n IOW Ass ertedt 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
PDATA Valid to Command 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 IOCHRDY Deasserted
Command Deasserted to nWAIT Deas sert ed
ns
s
ns
s
ns
50
40
35
50
12
24
40
50
35
45
Parameter
min
max
units
0
5
50
10
0
10
0
10
40
10
100
0
N ot es
2
1 . WRITE is controlled by clearing the PDIR b it to "0" in the contro l register be fore
performin g an EPP Write.
2. This number is only valid i f WAIT is active whe n nIOW g oes active.
t1
t2
t3
t4
t5
t6
t8
t9
t 10
t 11
t 12
t 13
t 16
t 17
t 18
t 19
t 20
t 21
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