FDC37B770 SMSC [SMSC Corporation], FDC37B770 Datasheet - Page 128
FDC37B770
Manufacturer Part Number
FDC37B770
Description
ENHANCED SUPER I/O CONTROLLER WITH WAKE UP FEATURES
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.FDC37B770.pdf
(196 pages)
- Current page: 128 of 196
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When writing to the command and data port
with hardware speedup, the IOW timing shown
in the figure titled “IOW Timing for Port 92” in
the Timing Diagrams Section is used. This
nIOW+n60=B
60=I/O Addr
64=I/O Addr
nAfterD1+B
nIOW+n64
nAfterD1
AfterD1
nCNTL
nIOW'
nAEN
nIOW
nDD1
GA20
AEN
DD1
CLK
D[1]
n64
n60
nA
0ns
Gate A20 Turn-On Sequence Timing
250ns
128
setup time is only required to be met when using
hardware speedup; the data must be valid a
minimum of 0 nsec from the leading edge of the
write and held throughout the entire write cycle.
500ns
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