pc87307 National Semiconductor Corporation, pc87307 Datasheet - Page 194
pc87307
Manufacturer Part Number
pc87307
Description
Plug And Play Compatible And Pc97 Compliant Superi/o
Manufacturer
National Semiconductor Corporation
Datasheet
1.PC87307.pdf
(218 pages)
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AEN
A15-0,
DACK
RD
WR
D7-0
PD7-0, ERR,
PE, SLCT, ACK,
BUSY,
GPIO17-10, GPIO27-20
FDC IRQ
AEN
A15-0,
DACK
WR
RD
D7-0
SLIN, INIT, STB,
PD7-0, AFD
FDC IRQ
FIGURE 13-4. Microprocessor Write Timing
FIGURE 13-3. Microprocessor Read Timing
t
t
AR
AW
t
PS
t
RVD
Device Description
t
Valid
Valid
RD
t
WR
194
t
DS
Valid Data
Valid Data
Previous State
t
RA
t
t
WA
RDH
t
HZ
t
t
DH
RI
t
WI
RC
WC
t
t
RCU
WCU
t
WO
Valid
Valid
OR
OR
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