bcm57840s Broadcom Corp., bcm57840s Datasheet

bcm57840s

Manufacturer Part Number

bcm57840s

Description

10 Gbps Quad-port Iscsi, Fcoe, Toe, And Rdma Pci-sig Sr-iov X8 Pci Express 3.0-ready Controller

Manufacturer

Broadcom Corp.

Datasheet

1.BCM57840S.pdf (2 pages)

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Highlights

•

Low-power single-chip solution

for four ports of 10GBASE-KR

compliant backplane 10G Ether-

net

Low-power single-chip solution

for four ports of SFP+ optical

converged network adapter

iSCSI v1.0 Host Bus Adapter

(HBA)

FCoE HBA applications

Applications with Energy Effi-

cient Ethernet™ for power sav-

ings with 10GBASE-T

Virtualization environments

10GBASE-KR Mezzanine card for

server blades

10GBASE-T copper NIC with

Broadcom external 10G copper

PHY (e.g., BCM84833)

Data Centers

Enterprise

Provider

Supported

Service

Best Choice

Broadcom

10 Gbps QUAD-PORT iSCSI, FCoE, TOE, and RDMA PCI-SIG SR-IOV x8

PCI EXPRESS® 3.0-READY CONTROLLER

The BCM57840S is a sixth-generation Converged

Controller designed for high-volume, converged LAN on

motherboard (LOM) and converged network adapter

applications, enables PCI SIG Single Root I/O

Virtualization (SR-IOV), iSCSI, FCoE, DCB, on-chip TOE,

and RDMA. The Converged Controller supports PCIe™

3.0 along with Embedded Virtual Bridging and other

switching technologies for high-performance direct

memory access (DMA) and virtualmachine (VM) to VM

switching.

The BCM57840S includes quad-channel 10GBASE-KR and

SFF-8431 for SFP+ 10 Gb interfaces. The BCM57840S

integrates four IEEE 802.3™-compliant Media Access

Controllers (MAC) and supports the NC-SI. Host-BMC

communication is also supported on top of NC-SI to

permit high-speed communication between the local

host and the Baseboard Management Controller (BMC or

MC). The feature-complete Converged Controller

requires only 0.82 square inches of PCB space and

enables 10G speeds at low per port power.

The BCM57840S enables convergence of all the possible

network communications in a server, such as data

network (LAN), FCoE storage network, block, for

example, iSCSI, or file, for example, CIFS/NFS, clustering

or Inter Process Communications (IPC) by support of

RDMA over TCP. The BCM57840S can simultaneously

support all offload traffic types on each of the ports,

including simultaneous iSCSI and FCoE. Offload results in

superior storage and networking performance, and low

CPU utilization, resulting in significant system-level

power savings.

The BCM57840S is designed for PCIe 3.0 and is also com-

patible with PCI Express® (PCIe) Base Specification Revi-

sions 2.0 and 1.1. The PCI Express supports MSI and MSI-

X capabilities. A separate PCI function is supported for

each of the ports.

Media Interfaces

Host Interfaces

Overview

BCM57840S Features

•

B CM 5784 0S

N et Xt re m e I I ®

C o nve rged C o nt rol l er

Integrated quad 10 Gbps MAC with offload and quad

10GBASE-KR/SFF-8431 (SFP+)

Single 25.00 MHz clock crystal for dual-port 10 Gbps

operation

Network Interfaces

TCP/IP Offload Engine (TOE)

Internet Small Computer Systems Interface (iSCSI) Control-

ler

Fibre Channel over Ethernet (FCoE)

RDMA Controller (R-NIC)

Robust Manageability

Data Center Bridging (DCB)

•

PCI Express x8 3.0, 8 GT/s-ready

PCI Express x8 2.0, 5 GT/s compliant

PCI Express x8 1.1, 2.5 GT/s compliant

PCI Express Lanes x1, x4, x8

No external DRAM required; flow-through architec-

ture

PCI Express CLKREQ support

Single Root I/O Virtualization (SR-IOV)

Message Signal Interrupt (MSI/MSI-X) support

Quad-port 10GBASE-KR/SFF-8431 (SFP+) interfaces for

1 Gbps/10 Gbps operation

IEEE 802.3ap Clause 73-compliant backplane opera-

tion

IEEE 802.3xx Clause 37-compliant auto-negotiation for

1 Gbps

Microsoft® TCP chimney compliant

Full FASTPATH® TCP offload for IPv4 and IPv6

Offloaded full HBA functionality iSCSI initiator

iSCSI boot and iSCSI crash dump support

Receiver and transmitter CRC offload

Offloaded full HBA functionality FCoE initiator

Hardware-based data placement in application buffers

without CPU intervention (for user and Kernel modes)

Very low latencies

Network Controller Sideband Interface (NC-SI)

PXE v2.1 remote boot

Wake-on-LAN (WOL)

Statistics gathering (SNMP MIB II, Ethernet MIB) (IEEE

802.2x,Clause 30)

Comprehensive diagnostic and configuration software

suite

Enhanced Transmission Selection (ETS) (IEEE

802.1Qaz)

Quantized Congestion Notification-Capable (QCN)

(IEEE 802.1Qau)

Priority Flow Control (PFC) (IEEE 802.1Qbb)

IEEE 802.1Qbg- and IEEE 802.1Qbh-capable for traffic

switching

Related parts for bcm57840s

bcm57840s Summary of contents

Page 1

... CPU utilization, resulting in significant system-level power savings. The BCM57840S is designed for PCIe 3.0 and is also com- patible with PCI Express® (PCIe) Base Specification Revi- sions 2.0 and 1.1. The PCI Express supports MSI and MSI- X capabilities. A separate PCI function is supported for each of the ports ...

Page 2

... Processor SMBus PCI Express SerDes x8 Interface SMB_DATA PCI Express x8 SMB_CLOCK Lanes [7:0] BCM57840S Block Diagram Accelerated FCoE • Offloaded and accelerated FCoE for Fibre Channel block storage with high I/O per second and low CPU uti- lization Performance-focused—Optimized for high throughput, low latency, and CPU utilization • ...

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