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| 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： | 26/36页 |
| 文件大小： | 231K |
| 代理商： | ALERT ON LAN ASIC |
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Alert on LAN* ASIC — Networking Silicon
22
Datasheet
4.11
Register 9h; Control
The Control register is used to provide miscellaneous control and status functions. The
retransmission packet count, TCO interface active indication, and APCI states can be obtained
from the Control register. Also, the 82558B can be reset, packet transmission can be enabled or
disabled, the behavior of the TREADY# signal can be set, and the ACPI state can be changed
through this register.
4.12
Register Ah; Software Status Byte 1
The Software Byte 1 register is used to provide detailed software information to the packet
recipient. This byte provides a method of sending specific information from the software and is
transmitted with each packet. It is intended to be valid when the Software Event bit is set in the
Event Status register.
Bits
Name
Type
Name and Description
Default
7:6
CTL_RTCNT
RO
Retransmission Count.
These bits indicate which of
the three Alert on LAN packet types are currently being
processed and sent.
11 = First packet
10 = Second packet
01 = Third packet
00 = No SOS packets
00b
5
CTL_TRDY
R/W
TREADY# Active.
When this bit is set, TFORCE is de-
asserted when TREADY# is asserted high. Otherwise,
TREADY# does not affect TFORCE.
EE(0)
4
CTL_558RST
R/W
82558 Software Reset.
Setting this bit to 1b causes
the hardware reset line to be asserted to the 82558B. A
0b value de-asserts the reset.
EE(0)
3
CTL_DRSMB
R/W
Drive SMB.
Setting this bit to 1b causes the Alert on
LAN ASIC to drive the open drain SMB interface while
PWR_GOOD is low. If this bit is a 0b, the SMB interface
operates as normally expected, regardless of
PWR_GOOD.
EE(1)
2
CTL_TXEN
R/W
Transmit Enable.
This bit enables real time control of
all Alert on LAN ASIC transmission. When active (1b),
transmission occurs as normal; otherwise, when
inactive (0b), transmission halts.
EE(0)
1:0
CTL_ACPI
R/W
ACPI State Indicator.
00 = G0 Power State
01 = G1 Power State
10 = G2 Power State
11 = Preboot.
If the ACPI state is not G2 and PWR_GOOD transitions
from high to low, an EEPROM load will occur. Thus, this
register is reloaded.
EE(11)
Bits
Name
Type
Name and Description
Default
7:0
SWS1_DAT
R/W
These bits indicate the status of transmitted SOS
packets from a Software Event.
00h
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