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Cmod S6
™ FPGA Board Reference Manual
Revised January 30, 2014
This manual applies to the Cmod S6 rev. A
DOC#: 502-282
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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Overview
The Digilent Cmod S6 is a small, 48-pin DIP form factor board built around a Xilinx Spartan 6 LX4 FPGA. The board
also includes a programming ROM, clock source, USB programming and data transfer circuit, power supplies, and
basic I/O devices. There are 46 FPGA I/O signals that are routed to 100-mil-spaced through-hole pins, making the
Cmod S6 well suited for use with solderless breadboards. At just .7" by 2.6" inches, it can also be loaded in a
standard socket and used in embedded systems.
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Configuration
The FPGA on the Cmod S6 can be configured using the on-board Adept USB interface or from the on-board Quad-
SPI Flash memory. Configuration files can be programmed using Xilinx's ISE 14.2 (or higher) development tools,
using Digilent's Adept system, or using older versions of the Xilinx tools if Adept is also installed. Xilinx's ISE/Impact
programming tool and Digilent's Adept tool will recognize the board and/or FPGA when the board is attached to a
PC using a Type-A to micro-B USB cable.
Xilinx's iMPACT tool and Digilent's Adept can both be used to program the FPGA, and iMPACT can also be used to
program the on-board QSPI Flash. Please refer to the ISE and/or Adept documentation for more information on
using the configuration software.
The Cmod S6.
600 slices (each with 4 LUTs and eight flip-flops);
8 DSP slices;
216Kbits of block RAM;
2 CMTs (4 DCMs and 2 PLLs).
16Mbyte Spansion Quad SPI Flash for storing FPGA
configurations and/or user data;
46 FPGA GPIO signals brought to DIP pins;
Two on-board clock sources;
4 user LEDs and 2 user buttons;
On-board Adept USB2 port for configuration, test and
communications interfaces.
Spartan 6 XC6SLX4-2CPG196 FPGA features include:
Cmod S6 features include:
