View source for A-C4E10 Cyclone IV FPGA EP4CE10E22C8N Development Board

[[File:P1715-CROPPED-720PX.jpg]]

== Features ==

* [https://www.ebay.com/itm/Intel-Altera-Cyclone-IV-FPGA-development-board-EP4CE10E22C8N-with-VGA-port/362877625504?hash=item547d3124a0:g:x-kAAOSwnVVZoVGW Ebay listing]

[[File:EP4CE10_Device_List.jpg]]

* 46 Internal SRAM 1KX9 Blocks

== Interface ==

=== 24C04 I2C EEPROM ===

[[File:24C04.jpg]]

=== Buzzer ===

[[File:24C04.jpg]]

=== EPCS ===

[[fILE:EPCS.png]]

== 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

[[File:VGA-PINS.jpg]]

=== 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 ===

[[File:J4-IO-CONN.PNG]]

* J4 - 2 pin - 3.3V

=== JTAG ===

== 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

=== K2 ===

=== K3 ===

=== K4 ===

* Marked DEV-CLR

=== K5 - Marked DEV-OE ===

== LEDs ==

=== Ring LEDs===

[[File:RingLEDs.jpg]]

* 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 [https://cdn.sparkfun.com/datasheets/Dev/Arduino/Other/CH340DS1.PDF CH340 USB to Serial I/F]

[[File:CH340G_Pinout.PNG]]

* 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

[[File:P1736-RTS-CTS_Mod.jpg]]

* 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 EP4CE10
* 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 ==

<pre>
# Clock, Reset
set_location_assignment PIN_23 -to i_clk
set_location_assignment PIN_86 -to i_n_reset
# Serial Port
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]
</pre>