- 您现在的位置：买卖IC网 > PDF目录378310 > Alert on LAN ASIC (Intel Corp.) System Monitoring Instrumentation Device(系统监控指示设备) PDF资料下载
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： | 14/36页 |
| 文件大小： | 231K |
| 代理商： | ALERT ON LAN ASIC |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页
Alert on LAN* ASIC — Networking Silicon
10
Datasheet
— High byte of Software register
— Low byte of Software register
— Watchdog data
6. The UDP checksum word will be incrementally calculated based on the data above and written
at the appropriate UDP checksum location.
7. Assuming that a packet can be sent (CTL_TXEN is set, the EEPROM has completed loading,
82558_RST is not active, TREADY# is not active or the CTL_TRDY is clear, and link is valid
or POL_LNKEV4 is clear), the complete packet, internally latched, will be transmitted to the
82558 via the TCO bus.
8. Once the packet has been successfully transmitted to the 82558B, the CTL_RTCNT counter
will be decremented one. The sequence is 11b, 10b, 01b, 00b.
9. When the Retransmission timer is expired, execution will begin at step 7 if the CTL_RTCNT
counter value does not equal 00b. If CTL_RTCNT equals 00b after the previous packet has
been transmitted (3 identical packets have been transmitted), then packet transmissions stop
until the next new event or a heartbeat occurs.
Since this process is always restarted when a new event occurs, it is possible to skip Quantum
numbers on the network transmissions. For example:
Event A occurs and causes 3 packets with Quantum
n
to transmit.
Event B occurs and starts transmitting 1 packet with Quantum
n+1
.
Event C occurs in the middle of the packet from Event B.
This causes this packet transmission to halt, and a new packet is started with Quantum
n+2
.
Therefore, the packet with Quantum
n+1
is never actually fully transmitted.
Note:
SOS alerts will always take priority over heartbeat packets. If an event occurs, three SOS packets
will be sent along with the re-transmission delays before another heartbeat packet is transmitted.
2.5
Event Timers
The Event Timers consist of a clock divider circuit and three timers within the Alert on LAN ASIC:
1.
Heartbeat Timer
. This timer controls the heartbeat status packet frequency. The Alert on
LAN ASIC transmits one packet per heartbeat timer expiration.
2.
Watchdog Timer
. This is a configurable timer used to time-out on critical events (for
example, failed OS boot, POST failure, OS hang, etc.).
3.
Retransmission Timer
. This timer controls the frequency of the retransmission of SOS
packets. The Alert on LAN ASIC transmits an alert packet three times.
The Watchdog Timer Event is automatically masked by hardware while the Main Power Good
signal equals 0b. This prevents the Watchdog Timer from failing when system power is lost. The
Watchdog Timer is used only to detect an OS hang.
相关PDF资料 |
PDF描述 |
|---|---|
| AM26LS30 | DUAL DIFFERENTIAL/ QUAD SINGLE.ENDED LINE DRIVERS |
| AM26LS31PC | Quad Line Driver with NAND Enabled Three-State Outputs |
| AM26LS31 | Quad Line Driver with NAND Enabled Three-State Outputs |
| AM26LS32 | QUAD EIA-422/3 LINE RECEIVER WITH THREE.STATE OUTPUTS |
| AM3341 | 64 x 4 BITS FIRST-IN FIRST-OUT MEMORIES |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ALF 105SS 20 | 制造商:Farnell / Duratool 功能描述:FOOT LOAD 105MM DIA |
| ALF 30MS 8 | 制造商:Farnell / Duratool 功能描述:FOOT LOAD 32MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, LOAD, 32MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, LOAD, 32MM DIA; Fastener Plating:Bright Zinc; Thread Size - Metric:M8; Spacer Material:Santoprene; Base Height:27mm; Body Plating:BZP; External Diameter:32mm; External Diameter:32mm; Fastener Material:Steel; Material:Steel; ;RoHS Compliant: NA |
| ALF 40MS 8 | 制造商:Farnell / Duratool 功能描述:FOOT 40MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, 40MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, 40MM DIA, Bumper / Feet Style:Square, Bumper / Feet Mounting:Bolt, Bumper / Feet Material:Polypropylene, Bumper / Feet Color:Black, Height:46mm, Base Height:27mm, Body Plating:BZP, External Diameter:40mm, External Width:40mm, , RoHS Compliant: NA 制造商:PRIVATE LABEL 功能描述:FOOT, 40MM DIA, Bumper / Feet Style:Square, Bumper / Feet Mounting:Bolt, Bumper |
| ALF 50MS 10 | 制造商:Farnell / Duratool 功能描述:FOOT LOAD 47MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, LOAD, 47MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, LOAD, 47MM DIA; Fastener Plating:Bright Zinc; Thread Size - Metric:M10; Spacer Material:Santoprene; Base Height:27mm; Body Plating:BZP; External Diameter:47mm; External Diameter:47mm; Fastener Material:Steel; Material:Steel; ;RoHS Compliant: NA |
| ALF 50SS 10X100 | 制造商:Farnell / Duratool 功能描述:FOOT LOAD 50MM DIA 制造商:Farnell / Duratool 功能描述:FOOT, LOAD, 50MM DIA 制造商:PRIVATE LABEL 功能描述:FOOT, LOAD, 50MM DIA, Bumper / Feet Style:Square, Bumper / Feet Mounting:Bolt, B |
发布紧急采购，3分钟左右您将得到回复。