Total Phase Cheetah SPI Host Adapter

Product Code: TP280121

Professional SPI Host Adapter for High-Performance Applications The Total Phase Cheetah SPI Host Adapter represents the pinnacle of SPI interface technology, specifically engineered for applications demanding maximum performance and reliability. Operating at speeds up to 40+ MHz, this professional-grade adapter delivers the performance required for modern embedded system development and production programming environments. Advanced Architecture and Performance The Cheetah adapter's pipelined architecture enables continuous, gapless data shifting that maximises throughput whilst maintaining precise timing control. This advanced design eliminates the performance bottlenecks common in traditional SPI interfaces, delivering sustained data rates that approach the theoretical maximum of the SPI clock frequency. Parameter Specification SPI Clock Range 0.1 MHz to 40+ MHz Maximum Overclocking Up to 50 MHz (experimental) Slave Select Lines 3 independent (SS1, SS2, SS3) USB Interface High-Speed USB 2.0 (480 Mbps) Target Power Supply +5V, 25mA maximum Comprehensive Software Ecosystem The Cheetah adapter includes a complete software suite designed to maximise productivity across the entire development lifecycle.

Flash Center Software provides professional-grade memory programming capabilities with support for hundreds of SPI flash and EEPROM devices through an extensible XML-based parts library. Gang Programming Capability Connect multiple Cheetah adapters to a single computer for parallel programming operations, dramatically reducing production line cycle times whilst maintaining programming reliability. Wiring Quick-Start The Cheetah adapter connects to target systems via a standard 10-pin ribbon cable with 2.54mm (0.1") pitch IDC connector. The pin assignment follows industry standards for maximum compatibility: Pin Signal Function 1 SS2 Slave Select 2 2 GND Ground Reference 3 SS3 Slave Select 3 4 NC/+5V Target Power (Optional) 5 MISO Master In, Slave Out 6 NC/+5V Target Power (Optional) 7 SCLK Serial Clock 8 MOSI Master Out, Slave In 9 SS1 Primary Slave Select 10 GND Ground Reference Essential Wiring Considerations Proper grounding is critical for reliable operation. Connect both ground pins (2 and 10) to establish a solid ground reference between the Cheetah adapter and target system. The adapter provides optional +5V target power on pins 4 and 6, capable of supplying up to 25mA for low-power target devices. Programming Example Code The following Python example demonstrates basic SPI communication using the Cheetah API: import cheetah_py as ch # Open Cheetah adapter handle = ch.ch_open(0) if handle <= 0: print("Unable to open Cheetah adapter") exit() # Configure SPI mode and bitrate ch.ch_spi_configure(handle, ch.CH_SPI_POL_RISING_FALLING, ch.CH_SPI_PHASE_SAMPLE_SETUP, ch.CH_SPI_BITORDER_MSB, 0x0) ch.ch_spi_bitrate(handle, 10000) # 10 MHz # Clear command queue and setup transaction ch.ch_spi_queue_clear(handle) ch.ch_spi_queue_oe(handle, 1) # Enable outputs ch.ch_spi_queue_ss(handle, 0x1) # Assert SS1 ch.ch_spi_queue_byte(handle, 1, 0x9f) # Send READ ID command ch.ch_spi_queue_byte(handle, 3, 0x00) # Read 3 bytes response ch.ch_spi_queue_ss(handle, 0x0) # Deassert SS1 # Execute transaction (ret, data_in) = ch.ch_spi_batch_shift(handle, 0) print(f"Device ID: {data_in:02x} {data_in:02x} {data_in:02x}")[1][2][3] ch.ch_close(handle) Flash Memory Programming Workflow Programming SPI flash memory with the Cheetah adapter and Flash Center Software follows a streamlined workflow optimised for both development and production environments: Connect target flash device via ribbon cable Launch Flash Center Software and detect adapter Select memory device from extensive parts library Load programming data (binary, hex, or S-record formats) Execute erase, program, and verify sequence Performance Benchmark The Cheetah adapter can erase, program, and verify a typical 1MB SPI flash memory in approximately 23 seconds, with the main limitation being the flash memory's page commit time rather than the adapter's transfer speed. Development Environment Integration Cross-platform API support enables seamless integration into existing development workflows. The Cheetah API provides comprehensive control over all adapter functions, with example code available for C/C++, Python, C#, and LabVIEW development environments. For automated testing and production environments, XML batch scripting capabilities in Control Center Serial Software enable complex test sequences to be executed without manual intervention, improving both efficiency and repeatability. Quality and Compliance Manufactured to professional standards with CE, REACH, and RoHS compliance, the Cheetah adapter meets international regulatory requirements for professional and industrial applications. Each unit includes a comprehensive one-year warranty backed by Total Phase's professional support team.