Design and Realization of a Prototype Hardware Platform for ...

The MegaWatch Wireless PlatformMaster's Thesis - Emanuel Corthay9 The MegaWatch Platform FabricationThe LCD requires a –5 V generator, implemented on the bottom layer of the board. The shutdownPIN of this generator is connected to the FPGA, and can be used to shut down the LCD to reducepower consumption. The PIN plan for the extension board is available in the appendix.Figure 37 Xemics Radio Circuit PINsThe PIN assignments for the radio circuit, as shown in figure above is the following:PIN 1PIN 2PIN 3PIN 4PIN 5PIN 6PIN 7PIN 8PIN 9PIN 10PIN 11PIN 12PIN 13PIN 14PIN 15PIN 16PIN 17PIN 18PIN 19PIN 20“SCK”, clock for the 3-wire serial busVDD, 3 Volts power supply. Goes through the current sense resistor first.“SI”, input: 3-wire serial bus data signal to the radio circuitGND, ground“SO”, output: 3-wire serial bus data signal from the radio circuit“TX”, set the antenna switch in transmit mode“EN”, 3-wire serial bus enable signal“RX”, set the antenna switch in transmit modeMode0, set the mode of the radio circuitNot usedMode1, set the mode of the radio circuitPattern signal, goes to 1 when the SFD is detected.Mode2, set the mode of the radio circuitNot connected“DCLK”, Recoverd received clockNot connected“Dataout”, output: received dataNot connected“Datain”, input: signal to transmitNot connectedThis signal lines then go to the FPGA through the Milli-Bus, according to the PIN plan given in theappendices.66 / 83