FPGA Design Demonstration BoardHardware User Guide 3-15the serial PROMs. The serial PROMs must be configured as OE/Resetto allow MPE and SPE to function properly.M0, M1, M2-Mode Pins (SW2-4,5,6)These three switches must be on to configure the XC4003E using theXChecker/Parallel Cable III. When these switches are on, the FPGA isin slave serial mode. To configure the XC4003E from the onboardserial PROM, these three switches must be off. This places the FPGAin master serial mode.RST-Reset (SW2-7)When this switch is on, it connects the RESET pushbutton (SW4) toXC4003E pin 56.INIT-Initialize (SW2-8)When this switch is on, it connects the XC3020A INIT pin to theXC4003E INIT pin. This connection is used to configure FPGAs in adaisy chain with the XC4003E at the head of the chain.Note INIT should only be used to configure FPGAs in a daisy chain.XChecker/Parallel Cable III Connector J2The following table provides a detailed description of the J2XChecker/Parallel Cable III connector.Table 3-6 XChecker/Parallel Cable III Connector J2Pin Name Function Pin Name FunctionJ2-1a VCC Supplies +5 V to thecable.J2-2 RT Read Trigger allowsXChecker Cable totrigger a readback of theXC4003E.Connects to XC4003Epin 32.J2-3a GND Supplies groundreference to thecable.J2-4 RD Used by XChecker Cablefor readback data.Connects to XC4003Epin 30.
