Product Data Sheet / Brochure

Broadcom 957416A4160C-DS103
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BCM957416A4160C Data Sheet Dual-Port 10GBASE-T Ethernet PCI Express 3.0 x8 Network Interface Card
1.2 Host Interface Connector
The BCM957416A4160C NIC is a PCI Express Gen3 x8 add-in card with standard height bracket. The card edge connector
complies with the PCI Express Gen3 x8 standard pinout for add-in cards outlined in the PCI Express Electromechanical
Specification v3.0 Section 6.1, Table 6-1.
The PCIe interface is 3.0 compliant.
NOTE: See Section 6 of the PCI Express Electromechanical Specification v3.0 for more details on the card edge connector
pinout, and to Section 9 for add-in card mechanical information.
1.3 BCM57416
The BCM57416 Ethernet Controller is configured as dual-port 10 Gb/s MAC with integrated 10GBASE-T Ethernet
transceiver to the line side and x8 PCI Express v3.0 interface to the system host.
1.4 Internal Clocks
The BCM57416 has an integrated differential oscillator circuit that operates from the external 50 MHz crystals. The 50 MHz
clock source is used to generate the clock frequencies for the device’s internal circuitries.
1.5 SMBus Interface
The BCM57416 Ethernet Controller SMB0 interface supports serial communications between BCM57416 and the system.
The interface allows the Ethernet Controller to act as a SMBus primary or a secondary device.
1.6 Nonvolatile RAM
The BCM57416 Ethernet Controller requires a nonvolatile serial flash memory (NVRAM) to store the device firmware, PCI
Configuration space settings (for example, Device ID, Vendor ID), MAC address, and so on. After power-up, the firmware is
downloaded into the device memory and executed by the on-chip processor.
1.7 Heat Sink
The passive heat sink is attached to the Ethernet Controller using four spring-loaded push pins that insert into four mounting
holes.
To prevent damage to the BCM57416 Ethernet Controller in the event of a missing heat sink, the Network Interface Card is
not allowed to power up.
1.8 DC/DC Regulators
The onboard voltage regulators use the 12V edge main power from the host interface connector to derive the necessary
power rails for different circuits and components on the board.