参数资料
型号: 37C669
厂商: 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: 电脑98/99顺从超级I / O软盘控制器与红外线支持
文件页数: 51/164页
文件大小: 621K
代理商: 37C669
144
FIGURE 7 - DISK DRIVE TIMING
t 3
t 1
t 2
t 4
t 5
t 6
t 7
t 8
t 9
nDI R
nSTEP
nD S0-3
nI NDEX
nRDATA
nWDATA
nIOW
nDS0-1,
nM TR0-1
*X speci fi es one MCL K period and Y specifies on e WCLK pe riod .
MCLK = Con trol ler Cl ock to FDC (See Table 6 ).
WCLK = 2 x D ata Rate (See Table 6 ).
Parameter
m in
typ
max
units
t1
t2
t3
t4
t5
t6
t7
t8
t9
nDIR Set Up to nSTEP Low
nSTEP Active Time Low
nDIR Hol d Time After nSTEP
nSTEP Cycle Time
nDS0-1 Hold Time from nSTEP Low
nINDEX Pulse W idth
nRDATA Active Time Low
nWDATA Write Data Wi dth Low
nDS0-1 , MTR0-1 from En d of n IOW
X*
ns
Y*
ns
4
24
96
132
20
2
40
.5
25
(AT Mode timin g only)
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