WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 456

• 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

13.6.1.4
13.6.1.4.1
13.6.1.4.2
Figure 79.
456
Layout Requirements
Board Impedance
The NC-SI signaling interface is a single-ended signaling environment with a target
board and trace impedance of 50  plus 20% and minus 10% is recommended. This
target impedance ensures optimal signal integrity and signal quality.
Trace Length Restrictions
Intel recommends a trace length maximum value from a board placement and routing
topology perspective of eight inches for direct connect applications
ensures that signal integrity and quality is preserved from a design perspective and
that compliance is met for the NC-SI electrical requirements.
NC-SI Trace Length Requirement for Direct Connect
For multi-drop applications
four inches. This keeps the overall length between the MC and the 82574 within the
specification.
82574
8 inches
(Figure
NC-SI_TXD(1:0)
NC-SI_RXD(1:0)
NC-SI_CRS_DV
80) the spacing recommendation is a maximum of
NC-SI_CLK_IN
NC-SI_TX_EN
82574 GbE Controller—Design Considerations
External
MC
(Figure
79). This