Data Sheet
BCM957454A4540C
Single-Port 1/10/25/40/50/100 Gb/s Ethernet PCI Express Gen3 x16
Network Interface Card
Overview
The Broadcom BCM957454A4540C is a single-port
1/10/25/40/50/100 Gb/s adapter that supports both
QSFP28/QSFP+ optical modules and copper direct-attach
cable. The card uses the Broadcom BCM57454 100 Gb/s
Ethernet LAN controller targeted at Public, Private Cloud,
and specifically, Big Data, and Multitenant applications. The
BCM57454 supports single-port 1/10/25/40/50/100 Gb/s,
Dual-Port 1/10/25/50 Gb/s, and Quad-Port 1/10/25 Gb/s
Ethernet speeds. The device includes a FalconCore,
providing a 4-lane Multi- Rate SerDes (MRS) transceiver. It
is focused on providing high performance, low latency, and
value-added features for end-to-end solutions using
Broadcom switches and controllers.
®
TCP, UDP, and IP checksum offloads
Large Send Offload (LSO)
Large Receive Offload (LRO)
TCP Segmentation Offload (TSO)
Receive-side Scaling (RSS)
Transmit-side Scaling (TSS)
VLAN insertion/removal
Interrupt coalescing
Network boot – PXE, UEFI
iSCSI boot
Wake-on-LAN (WOL)
MSI and MSI.X
Conforms to the PCI Express Card Electromechanical
Specification Rev. 3.0.
Features
Single-port pluggable media interface, which may be
equipped with 100 Gb/s or 40 Gb/s QSFP28/QSFP+
optical transceiver or with copper direct-attach cable.
Fully compliant with the SFF-8665 standard.
16-lane PCI Express host interface that is designed to
operate to the PCI Express v3.0 specifications.
SR-IOV with up to 1K virtual functions (VFs).
Function-Level Reset (FLR) support.
TruFlow™ flow processing engine.
Virtual Network Termination-VXLAN, NVGRE, Geneve,
GRE encap/decap.
vSwitch acceleration.
Tunnel-aware stateless offloads.
OCB support: PFC, ETS, QCN, DCBx.
TruManage™ integrated BMC.
Network Controller Sideband Interface (NC-SI).
SMBus 2.0.
MCTP over SMBus.
PCIe-based UART.
Jumbo frames up to 9600 bytes.
Advanced Congestion Avoidance.
Multiqueue, NetQueue, and VMQ.
IPv4 and IPv6 offloads.
957454A4540C-DS102
March 28, 2018
Broadcom
BCM957454A4540C
Data Sheet
Single-Port 1/10/25/40/50/100 Gb/s Ethernet PCI Express Gen3 x16 Network Interface
Card
Figure 1: BCM957454A4540C Network Interface Card
Broadcom
957454A4540C-DS102
March 28, 2018
BCM957454A4540C
Data Sheet
Single-Port 1/10/25/40/50/100 Gb/s Ethernet PCI Express Gen3 x16 Network Interface
Card
Table of Contents
Chapter 1: Functional Description .................................................................................................... 4
1.1 Block Diagram
...........................................................................................................................................................4
1.2 Host Interface Connector
.........................................................................................................................................5
1.2.1 BCM57454 ........................................................................................................................................................5
1.2.2 Clock Requirements..........................................................................................................................................5
1.2.3 Internal Clocks ..................................................................................................................................................5
1.2.4 NC-SI Interface .................................................................................................................................................5
1.2.5 SMBus Interface ...............................................................................................................................................5
1.3 UART Interface
..........................................................................................................................................................6
1.4 Nonvolatile RAM........................................................................................................................................................6
1.5 Heat Sink....................................................................................................................................................................7
1.6 DC/DC Regulators
.....................................................................................................................................................7
1.7 Power Supplies
.........................................................................................................................................................7
1.8 LED Functions and Locations
.................................................................................................................................7
Chapter 2: Regulatory and Safety Approvals .................................................................................. 9
2.1 Regulatory
.................................................................................................................................................................9
2.2 Safety
.........................................................................................................................................................................9
2.3 Electromagnetic Compatibility (EMC)
.....................................................................................................................9
2.3.1 Electrostatic Discharge (ESD) Compliance ....................................................................................................10
2.4 FCC Statement
........................................................................................................................................................10
Chapter 3: Physical and Electrical Specifications ......................................................................... 11
3.1 Board Physical Dimensions...................................................................................................................................11
3.2 Bracket Outlines and Dimensions
.........................................................................................................................12
3.3 Environment Specifications
...................................................................................................................................13
3.4 MAC Address Label
................................................................................................................................................13
Chapter 4: Ordering Information ..................................................................................................... 14
Appendix A: Acronyms and Abbreviations.................................................................................... 15
Revision History ............................................................................................................................... 16
957454A4540C-DS101; December 27, 2017 ................................................................................................................ 16
957454A4540-DS100; October 6, 2017 ........................................................................................................................ 16
Broadcom
957454A4540C-DS102
3
BCM957454A4540C
Data Sheet
Single-Port 1/10/25/40/50/100 Gb/s Ethernet PCI Express Gen3 x16 Network Interface
Card
Chapter 1: Functional Description
This section provides the functional description of the BCM957454A4540C network interface card.
1.1 Block Diagram
Figure 1
shows the main functional blocks on the BCM957454A4540C Network Interface Card.
Figure 1: Block Diagram
3.3V
10% to 2%
Regulator
PCIe x16 Gen3.0 Interface
25G
MRS
25G
25G
25G
QSFP28
Module
V33_QSFP0
Current
Limitor
PCIE_REFCLK_P/N
1.2 CLK
Buffer
REFCLK_B_P/N
PCIe x 16 Host Connector
GPIOs
WAKE_L
PCIE_RESET_L
PCIe
REFCLK_A_P/N
V33_1
Control/Status
GPIOs
NIC SMB
NIC
SMB
PCIE SMB
Interface
FRU
SMB
Isolation
BSC
I
2
C Interface
50 MHz
Crystal
NC-SI
Connector
NC-SI
Interface
XTAL
UART
NC-SI
NCSI_12V_6V
UART
Interfaces
Headers
NVRAM
P12 EDGE
MAIN/AUX
PWR
SWITCH
12V to 3.3V
Switching
Regulator
BCM57454
Controller
NIC SPI Interface
SPI
NVRAM
64 MB
NVRAM
P2V3_VAUX_EDGE
WOL
Circuit
QSPI Interface
V33_1
QSPI
NVRAM
64 MB
V33_1
EXT 2.5V
LDO
JTAG
Connector
JTAG
V33_1
VDDC_CORE_0.953V
External Circuitry for
VDDC_CORE
Regulator
USB
USB
Connector
IHOSTARRAY 1.8V
External Circuitry for
IHOSTARRAY P 1V8
Regulator
IHOST 0.8V
External Circuitry for on
chip IHOST 0 0.8V
Regulator
Broadcom
957454A4540C-DS102
4
BCM957454A4540C
Data Sheet
Single-Port 1/10/25/40/50/100 Gb/s Ethernet PCI Express Gen3 x16 Network Interface
Card
1.2 Host Interface Connector
The BCM957454A4540C NIC is a PCI Express Gen3 x16 add-in card with standard height bracket. The card edge connector
complies with the PCI Express Gen3 x16 standard pinout for add-in cards outlined in the PCI Express Electromechanical
Specification v3.0 section 6.1, table 6-1.
The PCI Express interface is Gen3 compliant.
NOTE:
Refer to section 6 of the PCI Express Electromechanical Specification v3.0 for additional details on the card edge
connector pinout, and to section 9 for add-in card mechanical information.
1.2.1 BCM57454
The BCM57454 Ethernet Controller supports single-port 1/10/25/40/50/100 Gb/s, dual-port 1/10/25/50 Gb/s, and quad-port
1/10/25 Gb/s Ethernet speeds to the line side and x16 PCI Express v3.0 interface to the system host.
1.2.2 Clock Requirements
The BCM57454 Ethernet controller has an integrated differential oscillator circuit that operates from an external 50 MHz
crystal.
1.2.3 Internal Clocks
The BCM57454 has an integrated differential oscillator circuit that operates from an external 50 MHz crystal. The 50 MHz
clock source is used to generate the clock frequencies for the device internal circuitries.
1.2.4 NC-SI Interface
The BCM57454 Ethernet Controller supports the NC-SI specification, version 1.1.0. The NC-SI provides a standardized
interface between the system BMC and the integrated NC-SI module of the BCM57454.
1.2.5 SMBus Interface
The BCM57454 device supports two SMBus interfaces, which are compliant with the SMBus specification version 2.0. Both
master and slave operations are supported, and the configurable slave SMBus address is stored in NVRAM. The BCM57454
SMBus supports a Management Component Transport Protocol (MCTP) payload, since it supports block write transactions
with up to 64-byte MCTP packet payload and a total packet size of 73 bytes, including the SMBus packet header, MCTP
packet header, MCTP packet payload, and PEC.
Broadcom
957454A4540C-DS102
5
