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LPC47M14X Datasheet(PDF) 186 Page - SMSC Corporation

Part # LPC47M14X
Description  128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
PDF  205 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LPC47M14X Datasheet(HTML) 186 Page - SMSC Corporation

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SMSC DS – LPC47M14X
Page 186
Rev. 03/19/2001
t3
t1
t2
t4
t5
t6
t7
t8
nDIR
nSTEP
nDS0-1
nINDEX
nRDATA
nWDATA
t9
FIGURE 27 – FLOPPY DISK DRIVE TIMING (AT MODE ONLY)
NAME
DESCRIPTION
MIN
TYP
MAX
UNITS
t1
nDIR Set Up to STEP Low
4
X*
t2
nSTEP Active Time Low
24
X*
t3
nDIR Hold Time after STEP#
96
X*
t4
nSTEP Cycle Time
132
X*
t5
nDS0 & nDS1 Hold Time from nSTEP Low (Note)
20
X*
t6
nINDEX Pulse Width
2
X*
t7
nRDATA Active Time Low
40
ns
t8
nWDATA Write Data Width Low
.5
Y*
t9
nDS0 & nDS1, Setup Time nDIR Low (Note)
0
ns
*X specifies one MCLK period and Y specifies one WCLK period.
MCLK = 16 x Data Rate (at 500 kb/s MCLK = 8 MHz)
WCLK = 2 x Data Rate (at 500 kb/s WCLK = 1 MHz)
Note: The DS0 &DS1 setup and hold times must be met by software.



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