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参数资料
| 型号： | Alert on LAN ASIC |
| 厂商： | Intel Corp. |
| 英文描述： | System Monitoring Instrumentation Device(系统监控指示设备) |
| 中文描述： | 系统监测仪器设备（系统监控指示设备） |
| 文件页数： | 25/36页 |
| 文件大小： | 231K |
| 代理商： | ALERT ON LAN ASIC |
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Datasheet
21
Networking Silicon — Alert on LAN* ASIC
The timer begins counting down from the value received during a write to the register. When the
timer reaches zero, a heartbeat event is caused and the timer begins counting down again. Any
write to this register while it is enabled reloads the time-out value. A read from the register results
in the current value of the timer.
Note:
It is not recommended to set the time-out value to 00h. Although an event will not be caused
immediately, one will be caused at the first incident if the timer is loaded with a nonzero value and
enabled with one SMB write.
4.10
Register 8h; Retransmission Timer
The Retransmission Timer register is used to configure the time-out value of the Retransmission
Timer. The Retransmission Timer is always enabled and is reloaded when a new event occurs.
Unlike the Watchdog Timer and Heartbeat Timer, the Retransmission Timer only reloads the time-
out value when it expires or a new event occurs, not every time a write is done.
Note:
A read from the Retransmission Timer register results in the current time-out value, not the current
timer value.
Bits
Name
Type
Name and Description
Default
7:1
HBT_VAL
R/W
Heartbeat Timer Value.
This value loads in 43-second
resolution with a range from 43 seconds to 92 minutes.
It can only be written to while the timer is disabled.
This timer has an accuracy of its value minus one tick,
where one tick is equal to 43 seconds.
EE(0000001b)
0
HBT_ENA
R/W
Timer Enable.
1 = Enable/Reset counter
0 = Disable counter
EE(0)
Bits
Name
Type
Name and Description
Default
7:1
RTM_VAL
R/W
Retransmit Timer Value.
This value loads in 2.7-
second resolution with a range from 2.7 seconds to 5.7
minutes. It can only be written to while the timer is
disabled.
This timer has an accuracy of its value minus one tick,
where one tick is equal to 2.7 seconds.
EE(0000001b)
0
RTM_RSVD
RO
This bit is reserved and should be set to 0b.
0b
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