WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 254

• Manufacturer Part Number: WG82574L S LBA9
• Description: CONTROLLER, ENET, INTEL 82574L, 64PQFN
• Manufacturer: Intel

Specifications of WG82574L S LBA9

• Ethernet Type: IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: 0°C To +85°C
• Digital Ic Case Style: QFN
• No. Of Pins: 64
• Package / Case: QFN
• Interface Type: I2C, JTAG, PCI, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.14
8.15
8.15.1
Figure 57.
254
Resets
In NC-SI there are two types of resets defined:
Recommendations:
For exact details on the resets, refer to NC-SI specification.
Advanced Workflows
Multi-NC Arbitration
As described in
the NC-SI lines.
Figure 57
Multi-NC Environment
1. Synchronous entry into the initial state.
2. Asynchronous entry into the initial state.
• It is very important that the MC firmware designer keep in mind that following any
• As an asynchronous entry into the initial state might not be reported and/or
• The Intel recommended polling interval is 2-3 seconds.
type of reset, all configurations are considered as lost and thus the MC must re-
configure everything.
explicitly noticed, the MC should periodically poll the NC with NC-SI commands
(such as Get Version ID, Get Parameters, etc.) to verify that the channel is not in
the initial state. Should the NC channel respond to the command with a Clear Initial
State Command Expected reason code - The MC should consider the channel (and
most probably the entire NC package) as if it underwent a (possibly unexpected)
reset event. Thus, the MC should re-configure the NC. See the NC-SI specification
section on Detecting Pass-through Traffic Interruption.
shows the system topology of such an environment.
section
8.11.2, in a multi-NC environment, there is a need to arbitrate
Channel1: 0x0
Channel2: 0x1
NC Package1
MC
NC-SI RX lines
82574 GbE Controller—System Manageability
HW-Arbitration lines
NC-SI TX lines
Channel1: 0x0
NC Package2