FDC37N769_07 SMSC [SMSC Corporation], FDC37N769_07 Datasheet - Page 120

• Manufacturer Part Number: FDC37N769_07
• Description: 3.3V Super I/O Controller with Infrared Support for Portable Applications
• Manufacturer: SMSC [SMSC Corporation]

FDD Timing
SMSC DS – FDC37N769
(AT Mode timing only)
*X specifies one MCLK period and Y specifies one W CLK period.
MCLK = 16x Data Rate (at 500 Kbp/s M CLK = 8 MHz)
W CLK = 2x Data Rate (at 500 Kbp/s W CLK = 1 MHz)
nM TR0-1
t1
t2
t3
t4
t5
t6
t7
t8
t9
nW DATA
nDS0-1,
nRDATA
nDS0-3
nINDEX
nSTEP
nIOW
nDIR
nDIR Set Up to nSTEP Low
nSTEP Active Time Low
nDIR Hold Tim e After nSTEP
nSTEP Cycle Time
nDS0-1 Hold Time from nSTEP Low
nINDEX Pulse Width
nRDATA Active Time Low
nW DATA W rite Data W idth Low
nDS0-1, MTR0-1 from End of nIOW
P a ra me ter
t9
t1
DATASHEET
FIGURE 8 - DISK DRIVE TIMING
Page 120 of 137
t6
t7
t8
t2
min
t4
typ
132
t3
24
96
20
40
25
t5
.5
4
2
ma x
t9
units
ns
X*
X*
X*
X*
X*
X*
ns
Y*
Rev. 02-16-07