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Enhanced FPGA PCB Board Design

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  • Enhanced FPGA PCB Board Design

Short Description:

FPGA pcb board. iCore4 dual-core industrial control board is the fourth-generation iCore series dual-core board launched by the company; due to its unique ARM + FPGA “one-size-fits-all” dual-core structure, it can be used in many test measurement and control fields. When iCore4 is used in the core of the product, the “ARM” core acts as the CPU role (it can also be said to be a “serial” execution role), responsible for function implementation, event processing, and interface functions. As a “logic device” role (or “parallel” execution role), the “FPGA” core is responsible for functions such as parallel processing, real-time processing, and logic management. The two cores “ARM” and “FPGA” communicate using a 16-bit parallel bus. The high bandwidth and ease of use of the parallel bus ensure the convenience and real-time performance of the data exchange between the two cores, making the two cores “twisted into one rope” to cope with the increasing functions of test and measurement and automatic control products , Performance requirements.


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2 Resource Characteristics

2.1 Power characteristics:

   [1] Adopt USB_OTG, USB_UART and EXT_IN three power supply methods;

   [2] Digital power supply: The output of the digital power supply is 3.3V, and the high-efficiency BUCK circuit is used to supply power for ARM / FPGA / SDRAM, etc.;

   [3] The FPGA core is powered by 1.2V, and also uses a high-efficiency BUCK circuit;

   [4] FPGA PLL contains a large number of analog circuits, in order to ensure the performance of PLL, we use LDO to provide analog power for PLL;

   [5] STM32F767IG provides an independent analog voltage reference to provide a reference voltage for the on-chip ADC / DAC;

   [6] Provides power monitoring and benchmarking;

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2.2 ARM features:

   [1] High-performance STM32F767IG with a main frequency of 216M;

   [2]14 high-performance I/O expansion;

   [3] Multiplexing with I/O, including ARM built-in SPI / I2C / UART / TIMER / ADC and other functions;

   [4] Including 100M Ethernet, high-speed USB-OTG interface and USB to UART function for debugging;

   [5] Including 32M SDRAM, TF card interface, USB-OTG interface (can be connected to U disk);

   [6] 6P FPC debugging interface, standard adapter to adapt to the general 20p interface;

   [7] Using 16-bit parallel bus communication;

2.3 FPGA Features:

   [1] Altera's fourth-generation Cyclone series FPGA EP4CE15F23C8N is used;

   [2] Up to 230 high-performance I/O expansions;

   [3] FPGA expands dual-chip SRAM with a capacity of 512KB;

   [4] Configuration mode: support JTAG, AS, PS mode;

   [5] Support loading FPGA through ARM configuration; AS PS function needs to be selected through jumpers;

   [6] Using 16-bit parallel bus communication;

   [7] FPGA debug port: FPGA JTAG port;

2.4 Other features:

   [1] The USB of iCore4 has three working modes: DEVICE mode, HOST mode and OTG mode;

   [2] The Ethernet interface type is 100M full duplex;

   [3] The power supply mode can be selected by jumper, the USB interface is directly powered, or through the pin header (5V power supply);

   [4] Two independent buttons are controlled by ARM and FPGA respectively;

   [5] The two LED lights of the iCore4 heterogeneous dual-core industrial control board have three colors: red, green and blue, which are controlled by ARM and FPGA respectively;

   [6] Adopt 32.768K passive crystal to provide RTC real-time clock for the system;

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