參數(shù)資料
型號(hào): 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(jí)I / O軟盤控制器與紅外線支持
文件頁數(shù): 47/164頁
文件大?。?/td> 621K
代理商: 37C669
140
TIMING DIAGRAMS
FIGURE 3 - MICROPROCESSOR READ TIMING
Pa ram eter
m in
typ
max
units
t1
t2
t3
t4
t5
A0-A9, AEN, nIOCS16 Set Up to
nIOR Low
nIOR Width
A0-A9, AEN, nIOCS16 Hol d from
nIOR H igh
Da ta Access Time from nIOR Low
D ata to Floa t De lay fro m nIOR High
40
150
10
100
60
ns
t6
Parall el Port Setup
t7
Re ad Stro be to Clear FINTR
ns
55
ns
20
40
t8
n IOR or nIOW In active for Transfers to
an d fro m ECP FIFO
150
ns
t 3
t 1
t 6
t 2
t 4
t 5
t 7
t 8
t 9
DATA VALID
A X,
AEN,
nIOCS16
nIOR
DATA
(D0-D7)
P D0-PD7, nERR,
P E, SLCT, nACK,
BUSY
FINTR
nIOR/nIOW
PINTR
t9
n IOR Active to PINTR Inacti ve
260
ns
NOTE: P INTR is the interrupt assigned to the Parallel Port
FINTR is the interrupt assigned to the Floppy Disk
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