SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 368

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

Rev 0.2 (09-28-04)
29.4
NAME
t1
t2
t3
t4
t5
t6
t7
t8
t9
*X specifies one MCLK period and Y specifies one WCLK period.
nWDATA
nRDATA
nINDEX
nDS0
nSTEP
nDIR
DESCRIPTION
nDIR Set Up to STEP Low
nSTEP Active Time Low
nDIR Hold Time after nSTEP
nSTEP Cycle Time
nDS0 Hold Time from nSTEP Low
nINDEX Pulse Width
nRDATA Active Time Low
nWDATA Write Data Width Low
nDS0 Setup Time nDIR Low
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 29.2 The DS0 setup and hold times must be met by software.
Floppy Disk Controller Timing
t9
Figure 29.12 Floppy Disk Drive Timing (AT Mode Only)
t1
(Note
(Note
29.2)
DATASHEET
t6
t7
t8
LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
t2
29.2)
352
t4
MIN
0
t3
t5
TYP
4
24
96
132
20
2
40
.5
MAX
SMSC SCH311X
Datasheet
UNITS
X*
X*
X*
X*
X*
X*
ns
Y*
ns