w89c926 Winbond Electronics Corp America, w89c926 Datasheet - Page 36

• Manufacturer Part Number: w89c926
• Description: Pcmcia Ethernet Network Twisted Pair Interface Controller
• Manufacturer: Winbond Electronics Corp America

Attribute Memory Access, continued
Note: These timings are specified when the PENTIC+ does not assert WAIT .
Common Memory Access
SYMBOL
T18a
T18b
T19a
T19b
T13
T14
T15
T16
T17
HD0-15
HD0-15
HA0-16
(Write)
(Read)
CE1,2
WAIT
REG
WE
OE
HA0-16, REG valid to read data valid (see note)
Read cycle time
Write cycle time
CE1 ,2 asserted to WE deasserted
CE1 ,2 asserted to read data valid (see note)
OE deasserted to next WE asserted
WE pulse width
WAIT pulse width
WE deasserted to next OE asserted
T1
T3
T3
DESCRIPTION
T12
T13
REG high
T11
T16
T14
- 36 -
T7
T4
Valid
Valid
T8
T5
T6
W89C926 PENTIC+
T9
T10
MIN.
180
150
300
250
10
10
T15
-
-
-
MAX.
300
300
12
-
-
-
-
-
-
UNIT
nS
nS
nS
nS
nS
nS
nS
nS
S