Spartan-3E Starter Kit Board User Guide www.xilinx.com 113UG230 (v1.0) March 9, 2006RChapter 15Expansion ConnectorsThe Spartan-3E Starter Kit board provides a variety of expansion connectors for easyinterface flexibility to other off-board components. The board includes the following I/Oexpansion headers (see Figure 15-1):• A Hirose 100-pin edge connector with 43 associated FPGA user-I/O pins, includingup to 15 differential LVDS I/O pairs and two Input-only pairs• Three 6-pin Peripheral Module connections• Landing pads for an Agilent or Tektronix connectorless probeHirose 100-pin FX2 Edge Connector (J3)A 100-pin edge connector is located along the right edge of the board (see Figure 15-1). Thisconnector is a Hirose FX2-100P-1.27DS header with 1.27 mm pitch. Throughout thedocumentation, this connector is called the FX2 connector.As shown in Figure 15-2, 43 FPGA I/O pins interface to the FX2 connector. All but five ofthese pins are true, bidirectional I/O pins capable of driving or receiving signals. Five pins,FX2_IP<38:35> and FX2_IP<40> are Input-only pins on the FPGA. These pins arehighlighted in light green in Table 15-1 and cannot drive the FX2 connector but can receivesignals.Figure 15-1: Expansion Headers43 I/O connections, high-performanceJ4 6-pin Accessory HeaderJ1 6-pin Accessory HeaderJ2 6-pin Accessory HeaderHirose 100-pin FX2 Connector, J3Default is 3.3V, set to 2.5V for differential I/OJumper JP9, I/O Bank 0 VoltageJ6 Probe Landing PadsConnectorless logic analyzer probesUG230_c12_01_030606
