User`s manual
RTD Embedded Technologies, Inc. | www.rtd.com 7 FPGA35S6 User’s Manual
1 Introduction
1.1 Product Overview
The FPGA35S6 series of FPGA boards are designed to provide platform to create any digital I/O that is required for
your application. It interfaces with the PCIe bus and features a Xilinx Spartan 6 FPGA with a 27 MHz oscillator and
1Gb of DDR2 SDRAM. There 48 5V tolerant I/O and 40 3.3V tolerant high speed I/O.
1.2 Board Features
Xilinx Spartan 6 System level features
o XC6SLX45T
43,661 Logic Cells
2,489 kb of internal RAM
116 18Kb (2088 Kb Max) Block RAM
401 kB Distributed RAM
o XC6SLX100T
101,261 Logic Cells
5,800 kb of internal RAM
268 18Kb (4,824 Kb Max) Block RAM
976 kB Distributed RAM
o RAM hierarchical memory:
Each block RAM has two independent ports
Programmable Data Width
o Integrated Endpoint block for PCI Express
o Integrated Memory Controller
1 Gb of DDR2 SDRAM
Supports access rates of up to 800Mb/s
o Dedicated carry logic for high-speed arithmetic
o Abundant logic resources with increased logic capacity
Optional shift register or distributed RAM support
Efficient 6-input LUTs
LUT with dual flip-flops
o Four dedicated DLLs for advanced clock control
Phase shift input clock by 0, 90, 180, 270
Multiply input clock by 2 to 32
Divide input clock by 1 to 32
Fully supported by Xilinx development system
o ISE WebPACK (free download from http://www.xilinx.com)
o ISE Design Suite
Digital I/O Connectors
o 48 5 volt tolerant I/O with ESD protection
o 40 3.3 volt tolerant high speed I/O with ESD protection
PCI Express Bus:
o PCIe/104 Universal Board
Interfaces with Type 1 or Type 2 bus
No re-population
o Provides 2.5 Gbps in each direction
o In-band interrupts and messages
o Message Signaled Interrupt (MSI) support