WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 455

• 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

Design Considerations—82574 GbE Controller
Figure 78.
13.6.1.3
NC-SI Connection Requirements - Multi-Drop Configuration
Resets
It is important to ensure that the resets for the MC and the 82574 are generated within
a specific time interval. The important requirement here is ensuring that the NC-SI link
is established within two seconds of the MC receiving the power good signal from the
platform. Both the 82574 and the external MC need to receive power good signals from
the platform within one second of each other.
This causes an internal power on reset within the 82574 and then initialization as well
as a triggering and initialization sequence for the MC. Once these power good signals
are received by both the 82574 and the external MC, the NC-SI interface can be
initialized. The NC-SI specification calls out a requirement of link establishment within
two seconds. The MC should poll this interface and establish a link for two seconds to
ensure specification compliance.
DMTF Compliant
BMC Device
REF_CLK
50 MHz
CRS_DV
RXD_0
RXD_1
TX_EN
TXD_0
TXD_1
50 MHz Reference
Clock Buffer
22Ω
22Ω
33Ω
10kΩ
10kΩ
10kΩ
10kΩ
10kΩ
3.3V
10kΩ
33Ω
33Ω
10kΩ
NC-SI_CLK_IN
NC-SI_CRS_DV
NC-SI_RXD_0
NC-SI_RXD_1
NC-SI_TX_EN
NC-SI_TXD_0
NC-SI_TXD_1
NC-SI_CLK_IN
NC-SI_CRS_DV
NC-SI_RXD_0
NC-SI_RXD_1
NC-SI_TX_EN
NC-SI_TXD_0
NC-SI_TXD_1
82574
NC-SI
Interface
Signals
82574
NC-SI
Interface
Signals
455