A-C4E6 Cyclone IV FPGA EP4CE6E22C8N Development Board

(CE10 card in picture)

Features

• A-C4E6_Cyclone_IV_FPGA_EP4CE6E22C8N_Development_Board

Interface

24C04 I2C EEPROM

Buzzer

EPCS

Connectors

DC-5V

• Do not connect power cable if Mini-USB is connected

PS/2

• PS/2 keyboard

VGA

• 1/1/1 R/G/B

Mini USB

• Do not connect power cable if Mini-USB is connected
• CH340 USB to serial I/F

J2 - LCD

• LCD1602 or LCD12864

I/O Connector

• J4 - 2 pin - 3.3V

Jumpers

J1

• 1x3 shunt
• LCD Power 3.3V or 5V

J3 - LCD Type Select

• 1602/12864 select

Switches

DIP Switch

• 8 positions

K1

• Marked nCONFIG

K4

• Marked DEV-CLR

LEDs

Ring LEDs

• D3-D14 = Ring LEDs

• D15 - CH340 USB Rx (in to card)
• D16 - CH340 USB Tx (out of card)

RTS/CTS Rework

• Add hardware handshake but lose 2 LEDs
  • LEDs have no series resistors and count on the output drive from the FPGA (bad idea)
    • Measured 1.8V on LED while lit
• Board uses CH340 USB to Serial I/F

• Hardware handshakes are in the CH340G IC but not wired to the FPGA pins on the board
  • This is an issue for slower serial emulations which need to throttle the host CPU
• Remove LEDs D13, D14

• Add wire D14 (top side) to U6-9 (CTS) (FPGA to CH340)
  • FPGA PIN_69
• Add wire D13 (top side) to U6-14 (RTS) (CH340 to FPGA )
  • FPGA PIN_70

Programming the FPGA EEPROM

• In Quartus II select File
• Convert Programming File
• Configuration Device = EPCS16
• Mode = Active Serial
• Programming File Type: *.jic
• Advanced = Check both Disables...
• Select Flash Loader
• Add Device = Cyclone IV E and EP4CE6
• Select SOF Data
• Select Add File and select the .sof file
• Generate

• In Tools, Programmer
• Add file and select the .jic file
• Select Program/Configure
• Takes a while to program
• Press nConfig button below VGA

Pin List

# Clock, Reset
set_location_assignment PIN_23 -to i_clk
set_location_assignment PIN_86 -to i_n_reset
# Serial Port with RTS/CTS Mod
set_location_assignment PIN_114 -to i_rxd
set_location_assignment PIN_113 -to o_txd
set_location_assignment PIN_70 -to i_cts
set_location_assignment PIN_69 -to o_rts
# PS/2 Keyboard
set_location_assignment PIN_11 -to i_ps2Clk
set_location_assignment PIN_10 -to i_ps2Data
# Buzzer
set_location_assignment PIN_141 -to o_BUZZER
# Switches
set_location_assignment PIN_87 -to i_pbutton[0]
set_location_assignment PIN_91 -to i_pbutton[2]
set_location_assignment PIN_90 -to i_pbutton[1]
set_location_assignment PIN_58 -to i_DipSw[0]
set_location_assignment PIN_59 -to i_DipSw[1]
set_location_assignment PIN_60 -to i_DipSw[2]
set_location_assignment PIN_64 -to i_DipSw[3]
set_location_assignment PIN_65 -to i_DipSw[4]
set_location_assignment PIN_66 -to i_DipSw[5]
set_location_assignment PIN_67 -to i_DipSw[6]
set_location_assignment PIN_68 -to i_DipSw[7]
# LEDs
set_location_assignment PIN_72 -to o_LED[0]
set_location_assignment PIN_73 -to o_LED[1]
set_location_assignment PIN_74 -to o_LED[2]
set_location_assignment PIN_80 -to o_LED[3]
set_location_assignment PIN_83 -to o_LED[4]
set_location_assignment PIN_84 -to o_LED[5]
set_location_assignment PIN_77 -to o_LED[6]
set_location_assignment PIN_76 -to o_LED[7]
set_location_assignment PIN_75 -to o_LED[8]
set_location_assignment PIN_71 -to o_LED[9]
# Video
set_location_assignment PIN_144 -to o_Vid_Blu
set_location_assignment PIN_1 -to o_Vid_Grn
set_location_assignment PIN_2 -to o_Vid_Red
set_location_assignment PIN_142 -to o_Vid_hSync
set_location_assignment PIN_143 -to o_Vid_vSync
# Seven Segment LEDs
set_location_assignment PIN_128 -to o_Anode_Act[0]
set_location_assignment PIN_129 -to o_Anode_Act[1]
set_location_assignment PIN_132 -to o_Anode_Act[2]
set_location_assignment PIN_133 -to o_Anode_Act[3]
set_location_assignment PIN_135 -to o_Anode_Act[4]
set_location_assignment PIN_136 -to o_Anode_Act[5]
set_location_assignment PIN_137 -to o_Anode_Act[6]
set_location_assignment PIN_138 -to o_Anode_Act[7]
set_location_assignment PIN_127 -to o_LED7Seg[0]
set_location_assignment PIN_126 -to o_LED7Seg[1]
set_location_assignment PIN_125 -to o_LED7Seg[2]
set_location_assignment PIN_124 -to o_LED7Seg[3]
set_location_assignment PIN_121 -to o_LED7Seg[4]
set_location_assignment PIN_120 -to o_LED7Seg[5]
set_location_assignment PIN_119 -to o_LED7Seg[6]
set_location_assignment PIN_115 -to o_LED7Seg[7]