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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 |
| 文件頁數(shù)： | 43/60頁 |
| 文件大小： | 348K |
| 代理商： | AM79C983AKC |
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Am79C983A
43
P R E L I M I N A R Y
Short Events
Address:
1110 0101
Short Events is a read-only attribute that counts the
number of instances where activity is detected with a
duration less than the ShortEventMaxTime (74-82 bit
times). This attribute is a 32-bit counter with a minimum
rollover time of 16 hours.
Runts
Address:
1110 0110
Runts is a read-only attribute that counts the number of
instances where activity is detected with a duration
greater than the ShortEventMaxTime (74-82 bit times,
but less than the minimum valid frame time (512-bit
times, or 64 bytes). This attribute is a 32-bit counter
with a minimum rollover time of 16 hours.
Note:
Runts usually indicate collision fragments, a
normal network event. In certain situations associated
with large diameter networks, a percentage of runts
may exceed ValidPacketMinTime.
Collisions
Address:
1110 0111
Collisions is a read-only attribute that counts the num-
ber of instances where a carrier is detected on the port,
and a collision is detected. This attribute is a 32-bit
counter with a minimum rollover time of 16 hours.
Late Events
Address:
1110 1000
Late Events is a read-only attribute that counts the
number of instances where a collision is detected after
the LateEventThreshold (480-565 bit times) in the
frame. This event will be counted both by the Late
Events attribute, as well as the Collisions attribute. This
attribute is a a 32-bit counter with a minimum rollover
time of 81 hours.
Very Long Events
Address:
1110 1001
Very Long Events is a read-only attribute that counts
the number of times the transmitter is active in ex-
cess of the MAU Jabber Lockup Protection (MJLP)
Timer (4 ms - 7.5 ms). This attribute is a 32-bit
counter with a minimum rollover time of 198 days.
Data Rate Mismatches
Address:
1110 1010
Data Rate Mismatches is a read-only attribute that
counts the number of occurrences where the frequency
or data rate of the incoming signal is detectably differ-
ent from the local transmit frequency. To be counted,
the incoming packet must be at least 512 bytes and not
in collision. The attribute is a 32-bit counter with a min-
imum rollover time of 80 hours.
Note:
The rate at which the Data Rate Mismatches
attribute will increment will depend on the magnitude of
the difference between the received signal clock and
the local transmit frequency.
bit 7
bit 0
bit 31
bit 24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
MSB
bit 0
bit 31
bit 24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
bit 7
MSB
bit 0
bit 31
bit 24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
bit 7
MSB
bit 0
bit 31
bit 24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
bit 7
MSB
bit 0
bit
31
bit
24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
bit 7
MSB
bit 0
bit 31
bit 24
D Port Read
LSB
Byte 0
Byte 1
Byte 2
Byte 3
bit 7
MSB
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C984 | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984A | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AJC | enhanced Integrated Multiport Repeater (eIMR⑩) |
| AM79C984AKCW | Circular Connector; No. of Contacts:6; Series:MS27474; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:8; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:8-35 RoHS Compliant: No |
| AM79C985JC | enhanced Integrated Multiport Repeater Plus (eIMR+⑩) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C983AKCW | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Integrated Multiport Repeater 2 (IMR2⑩) |
| AM79C983ASKC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
| AM79C983KC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
| AM79C983SKC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LAN Hub Controller |
| AM79C984 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:enhanced Integrated Multiport Repeater (eIMR⑩) |
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