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Overview
The RapidIO Interconnect Architecture is an industry-standard, packet-based interconnect technology that provides a reliable, high-performance interconnect between NPUs (network processing units), CPUs (central processing units), and DSPs (digital signal processors). Serial RapidIO enables chip-to-chip, board-to-board, and system-to-system communications and is targeted at the networking, embedded, and storage markets.
RapidIO has won broad acceptance in wireless infrastructure applications, where it is used as a primary interconnect for DSP clusters in baseband processing. In the past, vendors had to rely on expensive, premium FPGAs for these applications. However, the combination of the Serial RapidIO 2.1 IP core and Lattice's low-cost mid-range FPGA like the LatticeECP3 now allows customers to develop low-power infrastructure solutions for 3G, LTE and WiMAX without sacrificing performance or cost.

Serial RapidIO 1x Physical Layer Core Block Diagram
Features
- Serial RapidIO 2.1 endpoint core for processor bridging, control plane interfaces and bridging to legacy interface applications in a small footprint
- Allows for 1x, 2x, 4x lane configurations at 1.25Gbps
- Up to 3.125Gbps at 1x, 2x lane configurations
- Implements physical layer, transport layer, maintenance transaction handling and error management extensions.
- Provides infrastructure support for external logical layer functions, enabling maximum flexibility
- Provides a choice of logical layer functions that are important for the application
- Provides a choice of how logic layer functions interact with the rest of the system - SOC bus or streaming interfaces
- Supports software implementations of control plane oriented functions such as doorbells and messages
- Backward compatible with the v1.3 specification
Performance and Resource Utilization
LatticeECP31
| Configuration |
Slices |
LUTs |
Registers |
sysMEM EBRs |
fMAX (MHz) |
| All Configurations |
8405 |
13581 |
6341 |
14 |
1252 |
Ordering Information
| Family |
Part Number |
| LatticeECP3 |
SRIO-E3-U1 |
IP Version: 1.0
Evaluate, Purchase: Unlike other IP from Lattice, the Serial RapidIO 2.1 IP cannot be directly downloaded from the Lattice IP Server with IPexpress tool.
Please request this IP from Lattice at lic_admn@latticesemi.com and include your name, company, and complete contact information. A setup file for installation of the IP into IPexpress will be sent to you. Execute the setup file and then use IPexpress for configuration of your IP. After successful evaluation, contact your local Lattice Sales Office to purchase the license.
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