83C795 Datasheet, PDF (25/136 Pages) List of Unclassifed Manufacturers – Ethernet System Controller

83C795
ETHERNET SYSTEM CONTROLLER REGISTERS
5.0 ETHERNET SYSTEM CONTROLLER
REGISTERS
T he regis ter s tructure of the 83C795 is divided into
two regis ter groups : the Hos t Interface regis ters
and the LAN Controller regis ters . T he following
s ections des cribe the contents of each of these
regis ters, detail the way they are access ed, and
how they are us ed. Tables 5-1 through 5-3 provide
a brief overview of these registers .
R efer to the R egister S ummary tables at the endof
this s ection for a quick reference guide to all
relevant regis ter bit values.
OFFSET
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
SWH = 0
CR
EER
IOPL
IOPH
HWR
BPR
ICR
REV/IOPA
LAN0
LAN1
LAN2
LAN3
LAN4
LAN5
BDID
CKSM
SWH = 1
CR
EER
IOPL
IOPH
HWR
BPR
ICR
REV/IOPA
GCR2
—
IAR
RAR
BIO
GCR
ERFAL
ERFAH
TABLE 5-1. HOST INTERFACE REGISTERS
SUMMARY
12