AXI to SPI Bridge
AXI to SPI Bridge
Looking for an AXI-to-SPI bridge that just works — no drivers, no complications?
Sital Technology offers a unique, driverless AXI_2_SPI IP core, included free of charge with every purchase of our SPI hardware solutions.
Unlike traditional FPGA vendors that rely on driver-based SPI masters with complex FIFO logic, Sital’s AXI_2_SPI is fully hardware-accelerated, works across any FPGA platform, and integrates in minutes, not days.
What Makes Our AXI_2_SPI Unique?
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No software drivers required — pure hardware implementation
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Dual SPI and Single SPI support via AXI memory mapping
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2MB address space for high-throughput communication
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Fully portable across Xilinx, Intel, Microsemi, and Lattice FPGAs
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Clock speeds up to 50 MHz, derived from Axi_aclk
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Designed to support Sital’s own high-performance SPI protocol — no vendor lock-in
This is not a generic SPI controller. It’s optimized for Sital’s SPI cards — and it’s included at no extra cost.
Real-World Engineering Benefits:
In a Xilinx MPSoC environment, using Vivado at 100 MHz system clock, Sital’s AXI_2_SPI achieved SPI cycle times as low as 1.3 µs at 25 MHz — without any software overhead. That means:
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Reliable SPI communication
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Tight timing control
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Predictable, repeatable integration
You get AXI-based SPI access with full control, out of the box.
- Memory Mapping: 2MB mapped at address 0x200000 on the AXI bus.
- Mode Selection via Address Bits:
- 11 for Single SPI (backward compatible)
- 01 for Dual SPI
- 00 reserved for future Quad SPI support
- Clock Control:
- SPI clock derived from Axi_aclk (up to 50 MHz)
- Suitable for high-speed designs with proper trace layout
- Easy Integration:
- Supplied with two VHDL files for all FPGA P&R tools:
- AXI4_Dual_SPI_Pipeline_Master.vhd
- Modgen_specifics_sital.vhd
- Supplied with two VHDL files for all FPGA P&R tools:
