Difference between revisions of "RETRO-EP4CE15"

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(J7 - i/o connector)
(J2 - Keyboard pin header)
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=== P4 - SD Card Connector ===
 
=== P4 - SD Card Connector ===
  
=== J1 - I/O connector ===
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=== J1 - I/O Connector ===
  
 
* J8Pxx maps to U8 pin xx
 
* J8Pxx maps to U8 pin xx
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* Not used if the Mini-DIN PS/2 connector is used
 
* Not used if the Mini-DIN PS/2 connector is used
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 +
[[File:J2.png]]
  
 
=== J7 - I/O Connector ===
 
=== J7 - I/O Connector ===

Revision as of 06:43, 29 November 2019

Hardware Features

  • Uses QMTECH_EP4CE15F23C8N_FPGA_Board
    • On-Board FPGA: EP4CE15F23C8N
    • On-Board FPGA external crystal frequency: 50MHz
    • On-Board Winbond SPI Flash W25Q64, 8M bytes for user configuration code
    • On-Board 32MB Winbond SDRAM, W9825G6KH-6
    • On-Board 3.3V power supply for FPGA by using MP2315 wide input range DC/DC
    • EP4CE15F core board has two 64p, 2.54mm pitch headers for extending 108 user IOs.
    • EP4CE15F core board has 3 user switches
    • EP4CE15F core board has 2 user LEDs
    • EP4CE15F core board has JTAG interface, by using 10p, 2.54mm pitch header
    • EP4CE15F core board PCB size is: 6.7cm x 8.4cm
    • Default power source for board is: 1A@5V DC, the DC header type: DC-050, 5.5mmx2.1mm
  • 512 KB of fast SRAM
  • PS/2 keyboard connector
  • VGA connector
  • FT230XS FTDI USB-to-TTL
  • I/O connections on header
  • SD Card slot
  • ODAS card design specification form factor

FPGA Builds

Headers

H1 - Power 5V from USB connector

  • Install to power the 5V from the USB connector
  • Must remove if powering 5V from the DC jack on the FPGA card

H2 - I/O Connector 3.3V Power Source

  • 1-2 = Power from FPGA 3.3V
  • 2-3 = Power from on-board 5V to 3.3V regulator

Connectors

P1 - VGA Connector

  • 2:2:2 VGA connector
  • DB-15

P2 - PS/2 Connector

  • Mini DIN 6
  • 3.3V
    • Most, but not all, keyboard work at 3.3V

P3 - USB Connector

  • USB-C connector
    • Card is USB 2.0

P4 - SD Card Connector

J1 - I/O Connector

  • J8Pxx maps to U8 pin xx

J1.PNG

J2 - Keyboard pin header

  • Not used if the Mini-DIN PS/2 connector is used

J2.png

J7 - I/O Connector

  • IO_xx where xx is the pin on the FPGA

J7.PNG

u7 - FPGA connector U7

U7 Conn.PNG

U8 - FPGA connector U8

  • IO_xx where xx is the pin on the FPGA

U8 Conn.PNG

FPGA Daugherboard

QMTECH FPGA EP4CE15.jpg