The use of FPGA technology enables us to provide boards containing fully functional, tested examples of the newest Arm processors before any hard silicon devices are available from a foundry.
It is usual for an SMM to be constructed from one or more LogicTile Express boards. A SODIMM memory module is generally included, to provide the system SDRAM since this is not on the motherboard.
An SMM behaves like a Versatile Express CoreTile, which allows it to be mounted on the V2M-P1 motherboard for use as an off-the-shelf development system. PLLs in the FPGA are used to give the highest possible CPU speed for an FPGA implementation. As it is a drop in replacement for a CoreTile Express board, only a single set of off-board AMBA AXI buses are implemented.
SMMs are available in the Versatile Express range for the following Arm processors:
| SMM Express for Cortex-R5 | SMM Express for Cortex-R7 | |
|---|---|---|
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| SMM name (short) | SMM-R5 | SMM-R7 |
| Part number | V2S-CR5-1000A | V2S-CR7-1000A |
| PCB part number | HBI-0192 | HBI-217 |
| Datasheet | Datasheet | Datasheet |
| Manuals | User Guide | User Guide |
| Processor type | Cortex-R5 | Cortex-R7 |
| Num CPUs, Speed | Dual, 50MHz | Dual, 40MHz |
| Processor Revision | r1p2 | r0p0 |
| Coprocessors | FPU | FPU |
| Hardware required | V2F-1XV5 | V2F-2XV6 |
| L1 Cache I/D | 64KB/64KB | 16KB/16KB |
| L2 Cache | N/A | N/A |
| TCM I/D | 64KB x 2, per CPU | 64KB x 2, per CPU |
| Memory | 16 MB PSRAM | 2GB DDR2 SODIMM |
| Memory speed | 50MHz | 125MHz |
| Bus Type | AXI | AXI |
| Int Bus Freq | 50MHz | 40MHz |
| Ext Bus Freq | 25MHz (M), 35MHz (S) | N/A |
| Supported baseboard | V2M-P1 | V2M-P1 |