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): 64/164頁
文件大?。?/td> 621K
代理商: 37C669
156
FIGURE 18 - EPP 1.7 DATA OR ADDRESS READ CYCLE
t20
t19
t11
t15
t22
t13
t12
t3
t8
t10
t5
t4
t23
t2
t21
AX
nIOR
S D<7:0>
IOCHRDY
nWRITE
P D<7:0>
nDATAS TB
nADD RS TB
nWAIT
t 2
t 3
t 4
t 5
t 8
t10
t11
t12
t13
t15
t19
t20
t21
t22
t23
nIOR De as se rt ed to Command Dea ss erted
nWAIT Asserted to IOC HRDY D ea ss erted
Co mmand Deasserted to PDATA Hi-Z
Comma nd Asserted to PDATA Valid
n IO R As serted to IOCHRDY Asserted
nWA IT Deasserted to nIOCHRDY Deasserted
n IOC HRDY D ea sserted to nIO R D ea ss erted
nI OR De as serted to SDATA Hi gh -Z (Hold Time)
PData Valid to SDATA Valid
Time Ou t
Ax Valid to nI OR Asserted
n IO R Dea sse rt ed to Ax Invalid
Command Deasserted to nWAIT Deasserted
nIOR Deass erted to nI OW or nI OR Asserted
nI OR Assertedt oC ommand Asserted
n s
s
n s
5 0
4 0
2 4
5 0
4 0
1 2
5 5
Parameter
mi n
max
unit s
0
1 0
4 0
1 0
0
4 0
Notes
1 . nWRITE is controll ed by setti ng the PDIR bit to "1 " i n th e control register before
performing an EPP R ead .
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