COM90C66 Datasheet, PDF (20/76 Pages) SMSC Corporation – ARCNET Controller/Transceiver with AT Interface and On-Chip RAM

Table 3 – Read Register Summary
REGISTER MSB
READ
LSB ADDRESS
STATUS
RI
X
X
POR TEST RECON TMA TA
00
DIAG.
STATUS
MYRECON
X
RCVACT TOKEN
X
X
X
X
01
CONFIG- _{16EN CCHEN DECODE ET1 ET2 WAIT}
IO- _TXOFF
02
URATION
ACCESS
I/O SELECT
0
0
I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
03
MEMORY _{MEM7 MEM6 MEM5 MEM4 MEM3 MEM2 MEM1 MEM0}
04
SELECT
NODE
ID ^NID7
NID6 NID5 NID4 NID3 ^{NID2 NID1 NID0}
05
RESERVED
X
X
X
X
X
X
X
X
06
RESERVED
X
X
X
X
X
X
X
X
07
RESET
X
X
X
X
X
X
X
X
08
RESET
X
X
X
X
X
X
X
X
09
RESET
X
X
X
X
X
X
X
X
0A
RESET
X
X
X
X
X
X
X
X
0B
DATA
D7
D6
D5
D4
D3
D2
D1
D0
0C
LOW
DATA
HIGH
D15 D14
D13
D12
D11 D10
D9
D8
0D
ADDRESS
0E
PTR LOW
A7
A6
A5
A4
A3
A2
A1 A0
ADDRESS
PTR HIGH
X
AUTO-
X
INC
X
X
A10
A9
A8
0F
20