FDC37C672 View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
Manufacturer
FDC37C672 Datasheet PDF : 173 Pages
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Enhanced Super I/O Controller with Fast IR
Datasheet
nDIR
nSTEP
nDS0-3
nINDEX
nRDATA
nWDATA
nIOW
nDS0-1,
MTR0-1
t3
t4
t1
t2
t5
t6
t7
t8
t9
t9
Figure 21.10 - Disk Drive Timing (At Mode Only)
NAME
DESCRIPTION
MIN
t1
nDIR Set Up to STEP Low
t2 nSTEP Active Time Low
t3 nDIR Hold Time after nSTEP
t4 nSTEP Cycle Time
t5 nDS0-1 Hold Time from nSTEP Low
t6 nINDEX Pulse Width
t7 nRDATA Active Time Low
t8 nWDATA Write Data Width Low
t9 nDS0-1, MTRO-1 from End of nIOW
Notes:
*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)
TYP
MAX
UNITS
4
X*
24
X*
96
X*
132
X*
20
X*
2
X*
40
ns
.5
Y*
25
ns
SMSC FDC37C672
Page 154
DATASHEET
Rev. 10-29-03
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