參數(shù)資料
型號(hào)： AM79C983AKC
廠商： ADVANCED MICRO DEVICES INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： Integrated Multiport Repeater 2 (IMR2⑩)
中文描述： DATACOM, ETHERNET TRANSCEIVER, PQFP132
封裝： PLASTIC, QFP-132
文件頁(yè)數(shù)： 33/60頁(yè)
文件大?。?/td> 348K
代理商： AM79C983AKC
Am79C983A
33
P R E L I M I N A R Y
TPn/SPn
0
1
Link Test state unchanged
Link Test state changed
Loopback Error Change Interrupt
Address:
1110 0011
If a port is connected to a MAU which does not loop-
back data from DO to DI during transmission that port
has a loopback error. For the error to be detected, the
network needs to be active and a packet transmitted
from the port. The corresponding bit is set to 1 when
the loopback error condition changes.
Pn/AUI/RAUI
0
1
No loopback error change
Loopback error change
Polarity Change Interrupt
Address:
1110 0100
The corresponding bit is set to 1 if the polarity of the
connected port is switched.
TPn/SPn
0
1
Polarity unchanged
Polarity changed
SQE Test Error Change Interrupt
Address:
1110 0101
If a port is connected to a MAU with SQE Test enabled
that port has an SQE Test Error. For the error to be de-
tected, the network needs to be active and a packet
must be transmitted from the port. The corresponding
bit on the register is set when the port changes from an
error state to a non-error state or from a non-error state
to an error state.
Pn/AUI/RAUI
0
1
No SQE Test Error change
SQE Test Error change
Source Address Changed Interrupt
Address:
1110 0110
The corresponding bit in the register is set when the
source address of the incoming data packet matches
neither the Last Source Address Register nor the Pre-
ferred Source Address Register associated with the
port. The incoming packet must be an error-free packet.
Pn/AUI/RAUI/EP
0
1
No change
Source address changed on
the incoming port
Intruder Interrupt
Address:
A bit on the Intruder Interrupt Register is set when the
source address of an error-free incoming packet does not
match the corresponding Preferred Source Address Reg-
ister. The incoming packet must be an error-free packet.
1110 0111
Note:
The Preferred Address attribute is programma-
ble and can be used to store the expected Node ID for
a port. If the appropriate interrupt is also enabled, then
a Source Address Changed can be used to alert the
network manager of an unauthorized access. This is
particularly useful for segments that are supposed to
be connected to a single station.
Pn/AUI/RAUI/EP
0
Intruder
port unchanged
Intruder
port changed
status
of
1
status
of
Source Address Match Interrupt
Address:
1110 1000
When the source address of an incoming packet from
any port matches the Source Address Match Register,
the appropriate bit is set. The received packet must be
an error-free packet.
P7
0
MSB
P6
0
P5
RAUI
AUI
P4
P3
P11 P10 P9
P2
P1
P0
P8
LSB
D Port Read
Byte 0
Byte 1
TP7 TP6 TP5 TP4 TP3 TP2 TP1 TP0
SP3 SP2 SP1 SP0
TP11 TP
10
TP9 TP8
MSB
Byte 0
Byte 1
D Port Read
LSB
P7
0
P6
0
P5
RAUI
AUI
P4
P3
P11 P10 P9
P2
P1
P0
P8
LSB
D Port Read
Byte 0
Byte 1
MSB
P7
0
P6
EP
P5
RAUI
AUI
P4
P3
P11 P10 P9
P2
P1
P0
P8
LSB
D Port Read
Byte 0
Byte 1
MSB
P7
0
MSB
P6
EP
P5
RAUI
AUI
P4
P3
P11 P10 P9
P2
P1
P0
P8
LSB
D Port Read
Byte 0
Byte 1
P7
0
P6
EP
P5
RAUI
AUI
P4
P3
P11 P10 P9
P2
P1
P0
P8
D Port Read
Byte 0
Byte 1
LSB
MSB
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