Shared memory IP: Parallel packet buffering architecture
GENERAL DESCRIPTION
LancsNet parallel shared memory (PSM) IP is an innovative and high-performance packet buffer IP that is well suited for high and ultra-high bandwidth (up to 200 Gbps) applications. The memory is design to buffer multiple Ethernet streams simultaneously and eliminates the need for local line card buffers as well as avoiding HOL blocking effect. The design is highly configurable and is provided a convenient AMBA 4 AXI4-Stream interface for easy system integration.
KEY FEATURES
Features
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- Supports variable packet length from 64 bytes to 9600 bytes.
- AMBA 4 AXI4-Stream compatible
- Fault-tolerant and soft-error auto-recovery (optional with extra logic overhead)
- Status monitoring (optional with extra logic overhead)
- Supporting hierarchy design for ultra-high bandwidth and the large number of streams
- Raw packet latency: 512 ns/6,144 ns 64-byte/1514-byte packets (for 32x interfaces)
- Max ~200 Gbps-level switching capacity
- Support max 64 channel IDs
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Configurability
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- Core bus size from 64÷4,096 bit
- Memory size: depending on the availability
- Extra reliability features
- Number of input streams
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Technology Agnostic
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- VHDL source code available, designed and tested for FPGA* and ASIC ready
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* In production with customers
Example Implementation – LancsNet PSM
| Family | Part |
Fmax (MHz) |
LUT | LUTRAM | FF | BRAM | DSP | IP Config |
| Artix7 | XC7A200T | 170 | 1288 | 0 | 2291 | 61 | 0 |
512-bit, 256KB, 32 interfaces |
| Kintex7 | XC7K325T | 238 | 1288 | 0 | 2291 | 61 | 0 |
512-bit, 256KB, 32 interfaces |
| Virtex7 | XC7VX550T | 282 | 1288 | 0 | 2291 | 61 | 0 |
512-bit, 256KB, 32 interfaces |
| Artix7 | XC7A200T | 172 | 1359 | 65 | 3222 | 136 | 0 |
512-bit, 512KB, 32 interfaces |
| Kintex7 | XC7K325T | 236.1 | 1359 | 65 | 3222 | 136 | 0 |
512-bit, 512KB, 32 interfaces |
| Virtex7 | XC7VX550T | 248.5 | 1359 | 65 | 3222 | 136 | 0 |
512-bit, 512KB, 32 interfaces |
| Artix7 | XC7A200T | 172 | 1308 | 65 | 4546 | 264 | 0 |
1024-bit, 1024KB, 32 interfaces |
| Kintex7 | XC7K325T | 240.3 | 1308 | 65 | 4546 | 264 | 0 |
1024-bit, 1024KB, 32 interfaces |
| Virtex7 | XC7VX550T | 249.8 | 1308 | 65 | 4546 | 264 | 0 |
1024-bit, 1024KB, 32 interfaces |
APPLICATIONS
L2, L3 switch and routers, NGFW, network aggregator, network accelerators, network tapping
An example application of the PSM IP in L2 switch
DELIVERABLES
The IP core and the simulation testbench are provided with extensive documentation and technical support from our technical teams. By default, the encrypted format IP core is provided, full source code is available for interested partners/developers under a specific agreement
FOR DEMO ON HARDWARE AND SIMULATION
Contact us sales@lancsnet.com
PRICING AND FURTHER INFORMATION
Request for quote & datasheet at sales@lancsnet.com
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