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Intel 8255x 10/100 Mbps Ethernet Controller Family Open Source Software Developer Manual 65
Host Software Interface
6.4.2.3.1 Configuration Parameters
The interpretation of the fields from the configuration byte maps are:
• BYTE 0.
Table 40. 82559 Configuration Byte Map
Byte D7 D6 D5 D4 D3 D2 D1 D0
0 0 0 Byte Count
1 0 Transmit FIFO Limit Receive FIFO Limit
2 Adaptive Interframe Spacing
30000
Term
Write on
CL
Read Al
Enable
Type
Enable
MWI
Enable
4 0 Receive DMA Minimum Byte Count
5
DMBC
Enable
Transmit DMA Maximum Byte Count
6
Save Bad
Frames
Discard
Overruns
Ext. Stat.
Count
Extended
TxCB
CI
Interrupt
TCO
Statistics
10
7
Dynamic
TBD
2 Frames
in FIFO
000Underrun Retry
Discard
Short
Receive
8
CSMA
Disable
0000001
9
0 0
Link
Wake-up
Enable
VLAN
TCO
000
TCP/UDP
Check-
sum
10 Loopback Pre-amble Length NSAI 1 1 0
1100000000
12Interframe Spacing 0001
13
(00000000)
14 (11110010)
15
CRS and
CDT
1
CRC16
(0)
Ignore
U/L
1
Wait After
Win
Broadcast
Disable
Promis-
cuous
16 FC Delay Least Significant Byte
17 FC Delay Most Significant Byte
18 1 Priority FC Threshold
Long
Receive
OK
Receive
CRC
Transfer
Padding Stripping
19
Automatic
FDX
Force
FDX
Reject FC
Receive
FC
Restart
Receive
FC
Restop
Transmit
FC
Magic
Packet
Wake-up
Reserved
20 0
Multiple
IA
Priority
FC
Location
11111
210000
Multicast
All
101