FDC37B787QF SMSC [SMSC Corporation], FDC37B787QF Datasheet - Page 229
FDC37B787QF
Manufacturer Part Number
FDC37B787QF
Description
Super I/O Controller with ACPI Support, Real Time Clock and Consumer IR
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37B787QF.pdf
(249 pages)
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DISK DRIVE TIMING
*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)
nWDATA
nRDATA
nINDEX
nDS0-1,
MTR0-1
nDS0-3
NAME
nSTEP
nIOW
nDIR
t1
t2
t3
t4
t5
t6
t7
t8
t9
nDIR Set Up to STEP Low
nSTEP Active Time Low
nDIR Hold Time after nSTEP
nSTEP Cycle Time
nDS0-1 Hold Time from nSTEP Low
nINDEX Pulse Width
nRDATA Active Time Low
nWDATA Write Data Width Low
nDS0-1, MTRO-1 from End of nIOW
FIGURE 20 - DISK DRIVE TIMING (AT MODE ONLY)
TABLE 99 - DISK DRIVE TIMING (AT MODE ONLY)
t9
DESCRIPTION
t1
t6
t7
t8
t2
237
t4
MIN
t3
t5
TYP
132
24
20
40
25
96
.5
2
4
MAX
t9
UNITS
X*
X*
X*
X*
X*
X*
ns
Y*
ns
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