Publications

2015

1. Design and Implementation of SPI Display Controller Interface on FPGA

   Rahimi, M., and Eshghi, M.

   Aug 2015

   Abs Bib

   Serial Peripheral Interface is one of the most commonly used serial communication protocols in embedded systems and short-distance communications between peripherals of a system or a chip. SPI makes communication simple and can be used for high-speed peripherals. This paper represents the design and implementation of the SPI protocol on FPGA. We have designed Master mode, Slave mode, and display controller interface separately. We have simplified the protocol to gain high speed and less area utilization compared to previous works and have kept the main features of SPI. We have used Motorola’s latest SPI block guide to gain higher compatibility with other systems. The SPI is designed using VHDL tools and is synthesized on Xilinx’s SPARTAN6 FPGA.

   @conference{COMCONF01_217,
     title = {Design and Implementation of SPI Display Controller Interface on FPGA},
     author = {Rahimi, M. and Eshghi, M.},
     publisher = {International Conference on New Research Findings in Electrical Engineering and Computer Science},
     year = {2015},
     month = aug
   }

2. A Simple Constant Transconductance Bias Circuit for CMOS Analog Integrated-Circuits

   Rahimi, M., and Hasandzadeh, A.

   May 2015

   Abs Bib

   This paper represents a simple way of design and simulation a constant transconductance biasing circuit. We used a variable on-chip resistor instead of an off-chip resistor. A MOSFET biased in the triode region can be used as a variable resistor. The transconductance generated by this circuit has been designed with a 180nm CMOS technology process and a 3V power supply voltage. This design shows less than 8% variation of transconductance with up to 20% changes in power supply voltage and less than 1% variation of transconductance with 60°C of temperature changes.

   @conference{ICEE2015,
     title = {A Simple Constant Transconductance Bias Circuit for CMOS Analog Integrated-Circuits},
     author = {Rahimi, M. and Hasandzadeh, A.},
     publisher = {International Conference on Electrical Engineering},
     year = {2015},
     month = may
   }

2016

1. Design and Implementation of High-Speed SPI protocol in FPGA

   Rahimi, M.

   Jan 2016

   Bib

   @mastersthesis{CitekeyMastersthesis,
     title = {Design and Implementation of High-Speed SPI protocol in FPGA},
     author = {Rahimi, M.},
     school = {Shahid Beheshti University},
     address = {Tehran, Iran},
     year = {2016},
     month = jan
   }