High Speed Ethernet Interface Board

Cornet’s High speed Ethernet Interface Board, C13114, is an Extended Double Euro form factor board. This interface board provides the conversion of Multichannel differential parallel data into Ethernet packet data.

The board has five independent nodes and each NODE incorporates a Cyclone II FPGA and Tiva Microcontroller as the core components. There are also differential receivers for 16 bit parallel data and differential transceivers for transmitting and receiving TCLK (1 MHz) and SCLK (4 MHz) depending on whether it is a master or slave node.

The Tiva Microcontroller collects the parallel data and sends it over a network to the data receiver. The Tiva Microcontroller reads data over EPI (External Peripheral Interface) module implemented in the FPGA. The data is then sent as UDP over IP over Ethernet. The transmit interrupt (Packet transmit clock) is received from the FPGA.

The Node receives 15 bit parallel data along with the Return SCLK (RSCLK) and Return Transmit Clock (RTCLK) and sends it over Ethernet.

The RSCLK received from the onboard which is delayed version of SCLK determines the rate at which the data is sampled. The Tiva Microcontroller with embedded Ethernet MAC and PHY sends the data as Ethernet over IP over UDP.

Each node has 15 channels for receiving differential input and 24 channels for receiving TTL single ended inputs. These are sent to FPGA through buffers. The 24 single ended input gets divided into two 12 bits i.e. two rings (each ring has 12 bits). So, totally for 4 nodes, 60 channel differential data (4 node x 15 channel) and 96 channel single ended data (4 node x 24 channel) are received. The data is read simultaneously in 434ns duration for TTL mode of operation and 250ns duration for differential mode of operation.


Product Specifications

Board Details

C13114B-1 for Differential inputs
C13114B-2 for Single ended inputs
15 bit parallel differential input for each Node in C13114B-1
24 bit single ended input for each node in C13114B-2
Configurable master/slave nodes
Node-1 work as Master mode
Remaining nodes work as slave mode
Each Node includes Tiva Microcontroller and Altera Cyclone II FPGA
Differential receiver for each node for inputs


Ethernet Output
Ethernet output from each node supports 10/100 Mbps and Gigabit Ethernet
Switch Output
Ethernet switch output supports10/ 100/1000 Mbps

Power Supply

Power supply to board
+5V and on board generation of voltage is +3.3V with converters


Form factor
Extended Double Euro card
233.4mm (H) X 220mm (D)


Storage temp
-40 to 85 dec C

Learn About Other Cornet Products and Solutions

C4ISR Solutions                                   Networking                                          Video
Circuit to Packet Solutions                  Radio Crossbanding                             Tactical Switches
Rugged Computer Systems                 Rugged Embedded Cards                     Tactical LTE Manpack
Tactical Voice Terminals                      Vehicle Communication                       Patch Panels A/B Switches       
Video Encoders/Decoders/Recorders