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Product Detailed Parameters
- Description：MIP64 UNIPROCESSOR SOC
- Series：*
- Mfr：Broadcom Limited
- Package：Bulk
- Architecture：-
- Core Processor：-
- Flash Size：-
- RAM Size：-
- Peripherals：-
- Connectivity：-
- Speed：-
- Primary Attributes：-
- Operating Temperature：-
- Grade：-
- Qualification：-
- Package / Case：-
- Supplier Device Package：-
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Overview
The Broadcom BCM1125HB0K800G is a single-core MIPS64 processor based on the SB-1 architecture, operating at frequencies between 400 MHz and 800 MHz. It features a quad-issue pipeline with dual execution and memory pipes, connected via a 256-bit ZBbus to a shared 256-KB ECC-protected L2 cache and a DDR memory controller supporting up to 200 MHz. Integrated I/O includes two Gigabit Ethernet MACs (configurable as packet FIFOs), a 32-bit PCI interface, an 8-bit HyperTransport link, two serial ports, and generic I/O for boot ROM or flash connectivity.
Feature Summary
- SB-1 MIPS64 CPU core delivering up to 2.5 DMIPS/MHz performance
- Integrated 256-KB four-way associative L2 cache with ECC protection
- Dual Gigabit Ethernet MACs with configurable packet FIFO modes
- High-speed interfaces including 66-MHz PCI and 8-bit HyperTransport
Applications
- Networking routers and switches
- Broadband access systems such as DSLAM, CMTS, and BRAS
- Wireless base stations
- Storage controllers including RAID and NAS
- Web and caching appliances
Procurement Notes
Verify the specific suffix K800G against official documentation to confirm frequency binning and package details. Confirm availability status as product lines may be discontinued or superseded by newer generations like the BCM1480.
Selection Notes
Select this component for applications requiring software compatibility with the BCM1250/1280/1480 families while needing lower power consumption. Ensure system design supports the required DDR SDRAM or FCRAM memory types and utilizes the ZBbus protocol for coherent data transfer.
Part Context
This processor belongs to the BCM1125H family, manufactured using TSMC's 0.13-µ process technology. It is housed in a pin-compatible 31-mm BGA package and shares development tools and firmware with dual-core and quad-core successors in the same ecosystem.
Replacement Considerations
The BCM1125H is software-compatible with the BCM1250, BCM1255, BCM1280, BCM1455, and BCM1480 processors. These devices share the same ISA and toolchain, allowing for potential migration paths within the same product family.
