FDC37C672QFP SMSC Corporation, FDC37C672QFP Datasheet - Page 154

• Manufacturer Part Number: FDC37C672QFP
• Description: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
• Manufacturer: SMSC Corporation

Notes:
SMSC FDC37C672
NAME
*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)
t1
t2
t3
t4
t5
t6
t7
t8
t9
nWDATA
nRDATA
nINDEX
nDS0-1,
MTR0-1
nDS0-3
nSTEP
nIOW
nDIR
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
t9
Figure 21.10 - Disk Drive Timing (At Mode Only)
DESCRIPTION
t1
DATASHEET
t6
t7
t8
t2
Page 154
t4
MIN
t3
t5
Enhanced Super I/O Controller with Fast IR
TYP
132
24
96
20
40
25
.5
2
4
t9
MAX
Rev. 10-29-03
UNITS
Datasheet
X*
X*
X*
X*
X*
X*
ns
Y*
ns