COM90C66 Datasheet, PDF (18/76 Pages) SMSC Corporation – ARCNET Controller/Transceiver with AT Interface and On-Chip RAM

Table 1 – User Configuration of Memory Map
MS4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
MS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
MS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
MS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
0
1
1
1
0
1
1
1
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
DECODED BITS FOUND IN DATA REGISTER
D7 D6 D5 D4 D3 D2 D1 D0
11
0
0
0 0 00
11
0
0
0 0 01
11
0
0
0 0 10
11
0
0
0 0 11
11
0
0
0 1 00
11
0
0
0 1 01
11
0
0
0 1 10
11
0
0
0 1 11
11
0
0
11
00
11
0
0
11
01
11
0
0
11
10
11
0
0
11
11
1
1
0
1
0 0 00
1
1
0
1
0 0 01
1
1
0
1
0 0 10
1
1
0
1
0 0 11
1
1
0
1
0 1 00
1
1
0
1
0 1 01
1
1
0
1
0 1 10
1
1
0
1
0 1 11
1
1
0
1
1
0 00
1
1
0
1
1
0 01
1
1
0
1
1
0 10
1
1
0
1
1
0 11
1
1
0
1
11
00
1
1
0
1
11
01
1
1
0
1
11
10
1
1
0
1
11
11
1
1
1
0
0 0 00
1
1
1
0
0 0 01
1
1
1
0
0 0 10
1
1
1
0
0 0 11
RAM ADDRESS
RANGE
C:0000-C:07FF
C:0800-C:0FFF
C:1000-C:17FF
C:1800-C:1FFF
C:4000-C:47FF
C:4800-C:4FFF
C:5000-C:57FF
C:5800-C:5FFF
C:C000-C:C7FF
C:C800-C:CFFF
C:D000-C:D7FF
C:D800-C:DFFF
D:0000-D:07FF
D:0800-D:0FFF
D:1000-D:17FF
D:1800-D:1FFF
D:4000-D:47FF
D:4800-D:4FFF
D:5000-D:57FF
D:5800-D:5FFF
D:8000-D:87FF
D:8800-D:8FFF
D:9000-D:97FF
D:9800-D:9FFF
D:C000-D:C7FF
D:C800-D:CFFF
D:D000-D:D7FF
D:D800-D:DFFF
E:0000-E:07FF
E:0800-E:0FFF
E:1000-E:17FF
E:1800-E:1FFF
PROM ADDRESS
RANGE
C:2000-C:3FFF
C:2000-C:3FFF
C:2000-C:3FFF
C:2000-C:3FFF
C:6000-C:7FFF
C:6000-C:7FFF
C:6000-C:7FFF
C:6000-C:7FFF
C:E000-C:FFFF
C:E000-C:FFFF
C:E000-C:FFFF
C:E000-C:FFFF
D:2000-D:3FFF
D:2000-D:3FFF
D:2000-D:3FFF
D:2000-D:3FFF
D:6000-D:7FFF
D:6000-D:7FFF
D:6000-D:7FFF
D:6000-D:7FFF
D:A000-D:BFFF
D:A000-D:BFFF
D:A000-D:BFFF
D:A000-D:BFFF
D:E000-D:FFFF
D:E000-D:FFFF
D:E000-D:FFFF
D:E000-D:FFFF
E:2000-E:3FFF
E:2000-E:3FFF
E:2000-E:3FFF
E:2000-E:3FFF
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