FDC37C665IR SMSC Corporation, FDC37C665IR Datasheet - Page 141

• Manufacturer Part Number: FDC37C665IR
• Description: 3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
• Manufacturer: SMSC Corporation

(AT Mode timing only)
*X specifies one MCLK period and Y specifies one WCLK period.
MCLK = Controller Clock to FDC (See Table 6).
WCLK = 2 x Data Rate (See Table 6).
t1
t2
t3
t4
t5
t6
t7
t8
t9
nWDATA
nRDATA
nINDEX
nDS0-3,
MTR0-3
nDS0-3
nSTEP
nIOW
nDIR
nDIR Set Up to nSTEP Low
nSTEP Active Time Low
nDIR Hold Time After nSTEP
nSTEP Cycle Time
nDS0-3 Hold Time from nSTEP Low
nINDEX Pulse Width
nRDATA Active Time Low
nWDATA Write Data Width Low
nDS0-3, MTR0-3 from End of nIOW
Parameter
t9
FIGURE 9 - DISK DRIVE TIMING
t1
t6
t7
t8
141
t2
min
t4
typ
132
t3
24
96
20
40
25
t5
.5
4
2
max
t9
units
ns
X*
X*
X*
X*
X*
X*
ns
Y*