FPGA and CPLD based impulse sequence programmer

Abstract

The programmer is connected as: using Forth language processing unit as a core, FPGA connecting directly to Forth language control circuit CPLD, Forth languag processing unit FPGA connecting to logical interface of radio frequency, gradient and external circuit through driving and buffer circuit and Forth language processing unit connecting to static RAM and two-port RAM through driving circuit, ISA interface control circuit CPLD connecting to two-port RAM and PIO and two-port RAM and PIO connecting with bus of ISA. The spectrometer system suitable for NMR, NQR and MRI system can be designed based on the present invention.

Description

Technical field [0001] The invention belongs to the field of nuclear magnetic resonance technology, and particularly relates to a pulse sequence programmer based on FPGA (field programmable gate array) and CPLD (complex programmable logic device). Background technique [0002] Pulse sequence programmer is the core component of MRI spectrometer. Different MRI spectrometer manufacturers adopt different implementation methods for pulse sequence programmer. Some manufacturers such as MRRS, Datalink, and SeveNMR use SMIS MR3020 based on Forth language processing technology. The design idea of ​​the control system is: first compile the pulse sequence program written in PPL language into the Forth language through the compiler, and then form the binary code through the Forth language processing unit to implement the control of the gradient and radio frequency unit. [0003] The HARRIS RTX2000 chipset is a standard platform for processing Forth language. The above-mentioned MRI spectrome...

AI Technical Summary

Problems solved by technology

[0008] Although the Forth language is superior to other contemporary languages ​​in terms of code generation efficiency, it is not as easy to accept as other languages ​​due to its complex gramm

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