COM20020 Datasheet, PDF (24/72 Pages) SMSC Corporation – COM20020 3.3V ULANC Universal Local Area Network Controller with 2K x 8 On-Board RAM

Table 2 - Read Register Summary
REGISTER
STATUS
DIAG.
STATUS
ADDRESS
PTR HIGH
ADDRESS
PTR LOW
DATA
SUB ADR
CONFIG-
URATION
TENTID
NODE ID
SETUP1
NEXT ID
SETUP2
MSB
RI/TRI
MY-RECON
RD-DATA
A7
D7
(R/W)*
RESET
TID7
NID7
P1 MODE
NXT ID7
RBUS-TMG
READ
X/RI X/TA POR TEST
DUPID RCV- TOKEN EXC-
ACT
NAK
AUTO- X
X
X
INC
A6
A5
A4
A3
D6
D5
D4
D3
0
0
0
(R/W)*
CCHE
N
TID6
NID6
FOUR
NAKS
NXT
ID6
X
TXEN ET1
TID5
NID5
X
NXT
ID5
CKU
P1
TID4
NID4
RCV-
ALL
NXT
ID4
CKUP0
ET2
TID3
NID3
CKP3
NXT
ID3
EF
RECON
TENTID
A10
A2
D2
SUB-
AD2
BACK-
PLANE
TID2
NID2
CKP2
NXT
ID2
NO-
SYNC
LSB ADDR
TMA TA/
00
TTA
NEW
X
01
NEXT
ID
A9
A8
02
A1
A0
03
D1
SUB-
AD1
SUB-
AD1
TID1
NID1
CKP1
NXT
ID1
RCN-
TM1
D0
SUB-
AD0
SUB-
AD0
TID0
NID0
SLOW-
ARB
NXT
ID0
RCM-
TM2
04
05
06
07-0
07-1
07-2
07-3
07-4
Note*: (R/W) This bit can be Written or Read. For more information see Appendix C.
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