WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 85

• 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

Power Management and Delivery—82574 GbE Controller
5.3
5.3.1
5.3.2
5.4
5.4.1
Power Delivery
82574L operates from the following power rails:
The 1.9 V dc Rail
The 1.9 V dc rail is used for core and I/O functions. It also feeds internal regulators to a
lower 1.05 V dc core voltage. The 1.9 V dc rail can be generated in one of two ways:
The 1.05 V dc Rail
The 1.05 V dc rail is used for core functions and can be generated in one of the
following ways:
Power Management
82574L Power States
The 82574L supports D0 and D3 power states defined in the PCI Power Management
and PCIe specifications. D0 is divided into two sub-states: D0u (D0 Un-initialized), and
D0a (D0 active). In addition, the 82574 supports a Dr state that is entered when
PE_RST_N is asserted (including the D3cold state).
Figure 20
• A 3.3 V dc power rail for internal power regulation and for periphery. The 3.3 V dc
• A 1.9 V dc power rail.
• A 1.05 V dc power rail.
• An external power supply not dependent on support from the 82574. For example,
• Internal voltage regulator solution, where the control logic for the power transistor
• An external power supply not dependent on support from the 82574.
• Internal voltage regulator solution, where the control logic for the power transistor
• A complete internal voltage regulator solution. The internal voltage regulator can
should be supplied by an external power source.
the platform designer might choose to route a platform-available 1.9 V dc supply to
the 82574.
is embedded in the 82574, while the power transistor is placed externally. Control
is done using the CTRL18 pin.
is embedded in the 82574, while the power transistor is placed externally. Control
is done using the CTRL10 pin.
be disabled by the DIS_REG10 pin.
shows the power states and transitions between them.
85