W89C926 Datasheet, PDF (9/48 Pages) Winbond – PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER

W89C926 PENTIC+
SYSTEM DIAGRAM
SRAM
16 KB X 1
or 32KB X 1
(EECS/FCS
15
pull low)
OSC/XTAL
EEPROM
93C56/66
3
(EECS/FCS
pull low)
MSD0-7
MSA0-16
W89C926
TP/IF
W89C92
optional
LEDs
FLASH
128KB X 1
(EECS/FCS
pull high)
HA0-16
HD0-15
PCMCIA slot
Two combinations may be used for the hardware structure:
Combination 1: EECS/FCS pull high/128 KB X 1 flash memory/16 KB X 1 SRAM
Combination 2: EECS/FCS pull low/256 or 512B EEPROM/32 KB X 1 SRAM
FUNCTIONAL DESCRIPTION
ADDRESS MAPPING
EEPROM MAPPING
EEPROM ADDRESS
00H
01H
02H
03H
04H
05H
06H-08H
09H
0AH-nH
(n+1) H-FFH
HIGH BYTE
-
CFB
ID-1
ID-3
ID-5
Check Sum
-
57H
CIS
-
LOW BYTE
Word Count
CFA
ID-0
ID-2
ID-4
Board Type (05H)
-
57H
CIS
-
Notes:
1. The fifth (05H) word is used for shared memory mode and the ninth (09H) word is used for NE2000 mode.
2. Word Count = nH (n should be set as a non zero value, a zero value will cause an unpredicted error).
Publication Release Date: January 1996
-9-
Revision A1