參數(shù)資料
型號： 21440
廠商： Intel Corp.
英文描述： Multiport 10/100Mb/s Ethernet Controller(多端口10/100Mb/s 以太網(wǎng)控制器)
中文描述： 多端口10/100Mb/s以太網(wǎng)控制器（多端口支持10/100Mbps以太網(wǎng)控制器）
文件頁數(shù)： 42/92頁
文件大?。?/td> 1352K
代理商： 21440
Register Descriptions
3-22
21440 Multiport 10/100Mb/s Ethernet Controller
3.3
Network Statistic Counter Mapping
This section describes the 21440 statistic counter mapping.
3.3.1
Register Mapping
Table 3-2
lists each network statistic 21440 register name, mnemonic, and offset.
I/O Base address: 100H or 200H.
Table 3-2. Network Statistic Register Mapping (Sheet 1 of 2)
Register Description
Mnemonic
I/O Address
Offset
Transmit Statistic Counters
The number of unicast packets transmitted without any errors.
TX_UNI_OK_CNT
00H
–
03H
The number of multicast packets that are not broadcast,
transmitted without any errors.
TX_MLT_OK_CNT
04H
–
07H
The number of broadcast packets transmitted without any errors.
TX_BRD_OK_CNT
08H
–
0BH
The number of packets deferred upon the first transmit attempt due
to a busy line.
TX_DEFER_CNT
0CH
–
0FH
The total number of regular collision events occurring during
transmission.
TX_COL_CNT
10H
–
13H
The number of packets transmitted without any error following a
single collision.
TX_SCOL_CNT
14H
–
17H
The number of packets transmitted without any error following
multiple collisions.
TX_MCOL_CNT
18H
–
1BH
The number of packets that have experienced 16 consecutive
collisions or more.
TX_XCOL_CNT
1CH
–
1FH
The number of transmission abortions due to a collision occurring
after transmission of packets that are 64 bytes in length.
TX_LCOL_CNT
20H
–
23H
The number of transmitted packets, 64 bytes in length, including
bad packets.
TX_PKT_64_CNT
24H
–
27H
The number of transmitted packets, 65 to 127 bytes in length,
including bad packets.
TX_PKT_65_CNT
28H
–
2BH
The number of transmitted packets, 128 to 255 bytes in length,
including bad packets.
TX_PKT_128_CNT
2CH
–
2FH
The number of transmitted packets, 256 to 511 bytes in length,
including bad packets.
TX_PKT_256_CNT
30H
–
33H
The number of transmitted packets, 512 to 1023 bytes in length,
including bad packets.
TX_PKT_512_CNT
34H
–
37H
The number of transmitted packets, 1024 to 1518 bytes in length,
including bad packets.
TX_PKT_1024_CNT
38H
–
3BH
The number of transmitted packets with length larger than 1519
bytes, including bad packets.
TX_PKT_1519_CNT
3CH
–
3FH
The number of correct transmitted flow-control packets.
TX_PAUSE_CNT
40H
–
43H
The number of packets transmitted with an error due to transmit
FIFO underflow or txerr signal assertion.
TX_ERR_CNT
44H
–
47H
Transmit Byte Counters
The number of bytes transmitted in good packets.
TX_OCT_OK_CNT
60H
–
64H
The number of bytes transmitted in packets with errors.
TX_OCT_BAD_CNT
68H
–
6CH
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