Data Sheet
BCM957414M4143C
Single-Port 50 Gb/s and 40 Gb/s Ethernet PCI Express Gen3 x8 OCP
Mezzanine Card
General Description
The Broadcom BCM957414M4143C is a single-port
50 Gb/s or 40 Gb/s, PCI Express Gen3 x8 Mezzanine Card,
designed to the Open Compute Project (OCP) Mezzanine
Card specification with a QSFP28 network connector. The
adapter is designed to the OCP Mezzanine v2.0
specification as a Type 1 adapter with the board outline
adhering to the original v0.5 dimensions. The adapter
supports both QSFP28/QSFP+ optical modules and copper
direct-attach cables. The card uses the Broadcom
BCM57414 50GbE MAC controller with an integrated
single-channel 50GbE SFI transceiver.
®
Large Receive Offload (LRO)
TCP Segmentation Offload (TSO)
Receive-side Scaling (RSS)
Transmit-side Scaling (TSS)
VLAN insertion/removal
Interrupt coalescing
Network boot—XPXE, UEFI
iSCSI boot
Wake-on-LAN (WOL)
MSI and MSI.X
Conforms to the OCP Mezzanine Card Design
Specification v2.0 Type 1
RDMA over Converged Ethernet (RoCE)
Features
Applications
Single-port 50-Gigabit or 40-Gigabit Ethernet adapter for
Open Compute Platform systems
Single-port pluggable media interface, which may be
equipped with 50 Gb/s or 40 Gb/s QSFP28/QSFP+
optical transceiver or with copper direct-attach cable
Fully compliant with the SFF-8665 standard
x8 PCI Express v3.0 compliant
SR-IOV with up to 128 virtual functions (VFs)
Function-Level Reset (FLR) support
TruFlow™ flow processing engine
Virtual Network Termination—XVXLAN, NVGRE,
Geneve, GRE encap/decap
Switch acceleration
Tunnel-aware stateless offloads
DCB support: PFC, ETS, QCN, DCBx
TruManage™ integrated BMC
Network Controller Sideband Interface (NC-SI)
SMBus 2.0
MCTP over SMBus
PCIe-based UART and KCS
Jumbo frames up to 9 KB
Advanced Congestion Avoidance
Multiqueue, NetQueue, and VMQ
IPv4 and IPv6 offloads
TCP, UDP, and IP checksum offloads
Large Send Offload (LSO)
Broadcom
957414M4143C-DS101
December 26, 2017
BCM957414M4143C
Data Sheet
Single-Port 50 Gb/s and 40 Gb/s Ethernet PCI Express Gen3 x8 OCP Mezzanine Card
Figure 1:
BCM957414M4143C OCP Mezzanine Card
Broadcom
957414M4143C-DS101
December 26, 2017
BCM957414M4143C
Data Sheet
Single-Port 50 Gb/s and 40 Gb/s Ethernet PCI Express Gen3 x8 OCP Mezzanine Card
Table of Contents
Chapter 1: Functional Description .................................................................................................... 4
1.1 Block Diagram
...........................................................................................................................................................4
1.2 Host Interface Connector
.........................................................................................................................................5
1.3 BCM57414
..................................................................................................................................................................6
1.4 Clock Requirements
.................................................................................................................................................6
1.5 PCI Express Interface
...............................................................................................................................................6
1.6 NC-SI Interface
..........................................................................................................................................................6
1.7 SMBus Interface
........................................................................................................................................................6
1.8 UART Interface
..........................................................................................................................................................7
1.9 Non-volatile RAM
......................................................................................................................................................8
1.10 Heat Sink..................................................................................................................................................................8
1.11 DC/DC Regulators
...................................................................................................................................................8
1.12 Power Supplies
.......................................................................................................................................................8
1.13 LED Functions and Locations
...............................................................................................................................8
Chapter 2: Regulatory and Safety Approvals ................................................................................ 10
2.1 Regulatory
...............................................................................................................................................................10
2.2 Safety
.......................................................................................................................................................................10
2.3 Electromagnetic Compatibility (EMC)
...................................................................................................................10
2.4 Electrostatic Discharge (ESD) Compliance
..........................................................................................................11
2.5 FCC Statement
........................................................................................................................................................11
Chapter 3: Physical and Environmental Specifications ................................................................ 12
3.1 Board Physical Dimensions...................................................................................................................................12
3.2 Environment Specifications
...................................................................................................................................13
3.3 Label Information
....................................................................................................................................................13
3.3.1 MAC Address Label ........................................................................................................................................14
Chapter 4: Ordering Information ..................................................................................................... 15
Appendix A: Acronyms and Abbreviations.................................................................................... 16
Revision History ............................................................................................................................... 17
Broadcom
957414M4143C-DS101
3
BCM957414M4143C
Data Sheet
Single-Port 50 Gb/s and 40 Gb/s Ethernet PCI Express Gen3 x8 OCP Mezzanine Card
Chapter 1: Functional Description
This section provides the functional description of the BCM957414M4143C OCP Mezzanine Card.
1.1 Block Diagram
Figure 2
shows the main functional blocks on the BCM957414M4143C OCP Mezzanine Card.
Figure 2: BCM957414M4143C Block Diagram
V33_1
10G/25G
MRS
PCIe x8 GEN 3.0 Interface
PCIe
10G/25G
10G
10G
QSFP28
Module
WAKE_L
GPIOs
PCIE_RESET_L
Host Interface Connector
PCIe SMB
Interface
MEZZ SMB
Interface
FRU
SMB
Interface
SMB0
Isolation
Switch/
Bypass
Control/Status
BSC
I
2
C Interface
NC-SI
Interface
50 MHz
Crystal
XTAL
NC-SI
12V_EDGE_MAIN
P5V_AUX
MAIN/AUX
PWR
SWITCH
12V to 3.3V
Switching
Regulator
BCM57414
Controller
V33_1
NVRAM
32 Mb
SPI Interface
SPI
V10_VHOST
External Circuitry for
on Chip V10_HOST
Regulation
External Circuitry for
on Chip V10_VAON
Regulation
External Circuitry for
on Chip V10_ANALOG
Regulation
V33_1
V10_VAON
V10_ANALOG
4-Pin
Header
UART
Interface
UART
P1V8
External Circuitry for
on Chip P1V8
Regulation
External Circuitry for
on Chip P1V25
Regulation
Testpoints
JTAG
Interface
P1V25
Broadcom
957414M4143C-DS101
4
BCM957414M4143C
Data Sheet
Single-Port 50 Gb/s and 40 Gb/s Ethernet PCI Express Gen3 x8 OCP Mezzanine Card
1.2 Host Interface Connector
The BCM957414M4143C OCP Mezzanine Card interfaces with the system baseboard via a vertical-stacked card-to-card
connector, FCI/61083-124402LF. The PCIe bus, NC-SI bus, SMBus interface, various other sideband signals, and power
are assigned to this connector. The connector pinout complies with that of Connector A as described in the OCP Mezzanine
Card 2.0 Design Specification.
Table 1
shows the signal pinout. Definitions of the signals at this connector are provided in
the OCP Mezzanine Card Specification.
Table 1: Host Interface Connector Signal Pinout
Pin
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
Signal
MEZZ_PRSNTA1_N/
BASEBOARD_A_ID
P5V_AUX
P5V_AUX
P5V_AUX
GND
GND
P3V3_AUX
GND
GND
P3V3
P3V3
P3V3
P3V3
NCSI_RCSDV
NCSI_RCLK
NCSI_TXEN
PERST_N0
MEZZ_SMCLK
MEZZ_SMDATA
GND
GND
NCSI_RXD0
NCSI_RXD1
GND
GND
CLK_100M_MEZZ1_D
P
CLK_100M_MEZZ1_D
N
GND
GND
MEZZ_RX_DP<0>
MEZZ_RX_DN<0>
GND
GND
Pin
A34
A35
A36
A37
A38
A39
A40
A41
A42
A43
A44
A45
A46
A47
A48
A49
A50
A51
A52
A53
A54
A55
A56
A57
A58
A59
A60
A61
A62
A63
A64
A65
A66
A67
A68
Signal
MEZZ_RX_DP<1>
MEZZ_RX_DN<1>
GND
GND
MEZZ_RX_DP<2>
MEZZ_RX_DN<2>
GND
GND
MEZZ_RX_DP<3>
MEZZ_RX_DN<3>
GND
GND
MEZZ_RX_DP<4>
MEZZ_RX_DN<4>
GND
GND
MEZZ_RX_DP<5>
MEZZ_RX_DN<5>
GND
GND
MEZZ_RX_DP<6>
MEZZ_RX_DN<6>
GND
GND
MEZZ_RX_DP<7>
MEZZ_RX_DN<7>
GND
P12V_AUX/P12V
P12V_AUX/P12V
P12V_AUX/P12V
GND
GND
P3V3_AUX
GND
GND
Pin
A69
A70
A71
A72
A73
A74
A75
A76
A77
A78
A79
A80
A81
A82
A83
A84
A85
A86
A87
A88
A89
A90
A91
A92
A93
A94
A95
A96
A97
A98
A99
A100
Signal
P3V3
P3V3
P3V3
P3V3
GND
LAN_3V3STB_ALERT
_N
SMB_LAN_3V3STB_C
LK
SMB_LAN_3V3STB_D
AT
PCIE_WAKE_N
NCSI_RXER
GND
NCSI_TXD0
NCSI_TXD1
GND
GND
CLK_100M_MEZZ0_D
P
CLK_100M_MEZZ0_D
N
GND
GND
MEZZ_TX_DP_C<0>
MEZZ_TX_DN_C<0>
GND
GND
MEZZ_TX_DP_C<1>
MEZZ_TX_DN_C<1>
GND
GND
MEZZ_TX_DP_C<2>
MEZZ_TX_DN_C<2>
GND
GND
MEZZ_TX_DP_C<3>
Pin
A101
A102
A103
A104
A105
A106
A107
A108
A109
A110
A111
A112
A113
A114
A115
A116
A117
A118
A119
A120
Signal
MEZZ_TX_DN_C<3>
GND
GND
MEZZ_TX_DP_C<4>
MEZZ_TX_DN_C<4>
GND
GND
MEZZ_TX_DP_C<5>
MEZZ_TX_DN_C<5>
GND
GND
MEZZ_TX_DP_C<6>
MEZZ_TX_DN_C<6>
GND
GND
MEZZ_TX_DP_C<7>
MEZZ_TX_DN_C<7>
GND
GND
MEZZ_PRSNTA2_N
Broadcom
957414M4143C-DS101
5
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