W89C926 Datasheet, PDF (41/48 Pages) Winbond – PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER

W89C926 PENTIC+
H/W Reset and Auto-Initialization Timing
T1
RESET
T3
CEn
T2
T4
IREQ
EECS/FCS sampling
EECS/FCS
MSRD
MSWR
MSD0-7
MSAn
EECS/FCS floating
Auto-Loading
T5
Flash Memory Loading
Flash Auto-Loading (if EECS/FCS pulled high)
T7
Serial EEPROM loading
EEPROM Auto-Loading (if EECS/FCS pulled low)
T5
Flash Memory Loading
SRAM Write
even byte
T6
T6
SRAM Write
odd byte
SYMBOL
DESCRIPTION
T1
Reset pulse width
T2
Reset deasserted to EECS/FCS sampling
T3
Reset deasserted to CE1,2 asserted
T4
Nonvolatile memory auto-load time
T5
Flash memory auto-reading recovery time
T6
SRAM image auto-writing recovery time
T7
EEPROM auto-reading recovery time
MIN.
500
400
20
-
60
20
50
MAX.
-
-
-
10
-
-
-
UNIT
nS
nS
mS
mS
nS
nS
nS
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Publication Release Date: January 1996
Revision A1