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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： | 17/36页 |
| 文件大小： | 231K |
| 代理商： | ALERT ON LAN ASIC |
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Datasheet
13
Networking Silicon — Alert on LAN* ASIC
3.0
Signal Description
3.1
Signal Type Definition
3.2
Clock Signals
3.3
SMB Interface Signals
Symbol
Name
Description
I
Input
Input is a standard input.
O
Totem Pole
Output
Totem pole output is a standard active driver.
I/O
Input/Output
This signal is used for input and output to the device.
OD
Open Drain
Open drain allows multiple devices to share as a wired OR gate.
CMOS
CMOS Input
Buffer
Voltage detail for the CMOS Input Buffer are described in
Section 6.3,
“DC Characteristics” on page 27
.
TTL
TTL Input Buffer
Voltage detail for the CMOS Input Buffer are described in
Section 6.3,
“DC Characteristics” on page 27
.
S
Schmitt-Trigger
Input
This is used as Schmitt-Trigger Input.
PU
Pull-up Resistor
Pull-up resistance in the silicon is present.
PD
Pull-down
Resistor
Pull-down resistance in the silicon is present.
nmA
Output buffer drive in milliamps, where nis an integer value.
Symbol
Pin
Type
Name and Function
PCI_CK
40
I, PD,
CMOS
PCI Clock.
This signal is the PCI clock from the PCI interface. The
frequency range is 0 to 33 MHz.
B25_CK
42
I, CMOS
82558 Generated Clock.
This is a 25 MHz clock input provided by the
82558B. This clock is expected to operate at all times at a constant 25
MHz frequency, unless power to the Alert on LAN ASIC is lost.
PCI_SEL
41
O, 6 mA
PCI_CK Select.
This pin is asserted high (active) when PCI_CK is
enabled to the 82558B.
B25_SEL
43
O, 4 mA
B25_CK Select.
This pin is asserted high (active) when B25_CK is
enabled to the 82558B.
Symbol
Pin
Type
Name and Function
SMB_SCL
36
I/O, OD,
TTL, S,
4 mA
SMB Serial Clock.
This pin is the clock signal provided by the system
in order to communicate over SMB. This pin is used as output when
driven low during reset and while PWR_GOOD is equal to 0b if
enabled (Drive SMB bit in the Control register). Otherwise, the
SMB_SCL signal is used as input.
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