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BCM112X
PRODUCT
(R)
Brief
MIPS PROCESSORS
OF BENEFITS
BCM112X
HIGH-PERFORMANCE
FEATURES
BCM112X
SUMMARY
112x * Two processors inMHz - product line: * BCM1125H: 600 1 GHz
* BCM1125: 400 MHz - 800 MHz
* Industry-leading performance * 2 Dhrystone MIPS/MHz * Low power dissipation starting at less than 4W @ 400 MHz * High functional integration * Programming ease and flexibility based on MIPS64 ISA * Scalable system architecture * Broad tools and system software support * Software-compatible with BCM1250
*Based on internal Broadcom benchmark, using BCM112X for standard IPv4 L3 look-up/switching. * Processing speed of up to 5 Mpps* * 128-Gbps on-chip bus bandwidth, 26-Gbps memory bandwidth, up to 29-Gbps total I/O bandwidth
* MIPS64TM CPU pipeline; dual execute, dual memory pipes * Quad-issue in order
memory-coherent bus * *Fast, on-chip CPU, L2 cache, memory (ZBbus) and I/O Connects the controller
bridges * Runs at half the CPU core clock; 256 bits wide
* Enhanced skew pipeline enables zero load-to-use penalty * 32-KB instruction cache, 32-KB data cache * Advanced branch predictors
* On-chip L2 cache CPU and I/O bridges * 256KB, shared by
* Four-way associative, ECC protected * Ways can be removed to provide fast on-chip RAM
memory controller * DDR channel with a 64-bit data bus plus ECC * One
* Runs up to 200 MHz clock rate, 400 Mbps data rate * Support for DDR SDRAM, SGRAM, and FCRAM
SUMMARY
OF
BENEFITS
interfaces * High-speed packetEthernet MACs; 802.3 compliant * Two 10/100/1000
* Option to configure MACs into packet FIFOs to enable OC-48 data rates
The BCM112X's world-class performance, power efficiency and integration makes these processors ideal for a broad variety of systems including:
* Networking: routers, switches * Control plane processing * Line cards * Broadband access: DSLAM, CMTS, BRAS * Wireless base stations * Storage: RAID controllers, NAS controllers, HBAs * Web/networking/caching appliances * Imaging: printers, copiers
* * 32-bit, 33/66 MHz PCI 2.2
PCI interface
* Host bridge or target device
(LDT) * *BCM1125H: HyperTransport standardI/O interface I/O Complies with HyperTransport for high-speed
fabric * 600-MHz clock rate, 1.2 Gbps data rate * Peak bandwidth of 19.2 Gbps on 8-bit link * Supports double-ended fabrics (linking two BCM1125Hs or BCM1125H and BCM1250)
Example: PCI card for TCP/IP Acceleration
BCM58XX 2,400 Mbps IPSec BCM5421 Copper HT
* *Integrated system I/Oconnect to boot ROM, FLASH, fast Generic I/O for direct
peripherals/ASICs * SMBus serial configuration interface * PCMCIA control interface * Two serial interfaces
FLASH
GenBus
* Extensive, on-chip debug features * 4W @ 400 MHz * Software-compatible with BCM1250 * Support for leading operating systems including VxWorks , Linux , NetBSD and QNX * Evaluation board platform available with tools, firmware
(R) (R)
GMII BCM5421S Fiber
BCM1125H
DDR SDRAM
PCI
Host
and software drivers
BCM112X
OVERVIEW
JTAG
Debug/ Trace GPIO/ Interrupt/ PCMCIA Dual SMBus 1 Gbps Generic Bus and Flash I/O
Data Mover
SB-1 Core 256 bits
256 KB L2 Cache
DDR Memory Controller Serial Interface Serial Interface
26 Gbps
ZBbus
1 2
55 Mbps
core clock, 128 Gbps 10/100/ 1000 MAC FIFO 32 bit PCI
55 Mbps
10/100/ 1000 MAC
HT Host Bridge
19.2 Gbps BCM1125H Only
6.7 Gbps
2.1 Gbps
Broadcom's BCM112X products are state-of-the-art processor solutions targeted at the fast-growing networking, wireless communications, storage, server/networking appliance and imaging markets. BCM112X processors offer industry-leading performance, high functional integration, and low power levels in a small package required by next-generation networking applications. The BCM1125H and BCM1125 are software-compatible with the dual-processor BCM1250 and share development and modeling tools, firmware, and operating systems with the processor. The BCM112X processors are intelligent systems on a chip consisting of a Broadcom SB-1 high performance MIPS64 CPU, a shared 256-KB L2 cache, a DDR memory controller, and an integrated I/O. All major blocks of the processor are connected together via the ZBbus, a high-speed, low-latency, split-transaction, memory-coherent bus. The bus implements the standard MESI protocol to ensure coherency between the CPU, L2 cache, I/O agents, and memory. Two Gigabit Ethernet MACs (10/100/1000) enable easy interfacing to LANs. To enable higher data rates, or in cases where Ethernet protocol processing is not required, each MAC can be configured as an 8-bit packet FIFO, or both can be combined into a 16-bit packet FIFO. High-speed I/O is provided using a 66-MHz (rev 2.2) PCI local bus and, on the BCM1125H, AMD's HyperTransportTM (LDT) I/O fabric in addition to PCI.
Broadcom(R), the pulse logo, Connecting everything(R) and SiByteTM are trademarks of Broadcom Corporation and/or its subsidiaries in the United States and certain other countries. All other trademarks are the property of their respective owners.
Two serial ports are provided for WAN connections at up to T3/OC-1 rates (55 Mbps). To enable low-chip-count systems, the BCM112X processors also include a configurable generic bus that allows glueless connection of a boot ROM or FLASH memory and simple I/O peripherals. On-chip debugging, tracing, and performance monitoring functions assist both hardware and software designers in debugging and tuning the system. The system can be run in either big- or little-endian mode. The BCM112X processors are manufactured in TSMC's 0.13- process, and are packaged in pin-compatible 31-mm BGA packages. Implementation of MIPS64 ISA The SB-1 CPU core is a high-performance implementation of the standard MIPS64 Instruction Set Architecture (ISA), and incorporates the MIPS-3D and MIPS-MDMX Application Specific Extensions (ASEs). The core supports a four-issue enhanced skew pipeline and can dispatch up to two memory and two ALU (Integer, Floating Point, MDMX or MIPS-3D) instructions per cycle.
(R)
BROADCOM CORPORATION 16215 Alton Parkway, P.O. Box 57013 Irvine, California 92619-7013
(c) 2003 by BROADCOM CORPORATION. All rights reserved. 112X-PB03-R-4.13.03
Phone: 949-450-8700 FAX: 949-450-8710 Email: info@broadcom.com Web: www.broadcom.com

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