This material exempt per Department of Commerce license exception TSU Architecture Wizard and PACE Lab 2 Introduction

Lab 2 Intro 2 Introduction This lab guides you through the process of adding a DCM (Digital Clock Manager) into a PicoBlaze UART real-time clock design. – The DCM will divide the 100 MHz system clock on the XUP Virtex-II Pro board down to 50 MHz. – This 50 MHz will clock the design which consists of the PicoBlaze, TX and RX UARTs, and control logic. You will generate a bitstream and configure the Virtex-II Pro device on the XUP board – You will interact with PicoBlaze via hyperterminal to set the current and alarm times, and start and stop the times. – When the alarm goes off, an LED will flash.

Lab 2 Intro 3 Objectives After completing this module, you will be able to: Use architecture wizard to parameterize a DCM Instantiate the DCM into the design using the language template Specify pin constraints using PACE Download and test the design in hardware

Lab 2 Intro 4 General Flow Step 1: Use the architecture wizard to configure a DCM Step 2: Instantiate the DCM into a VHDL/Verilog design Step 3: Use PACE to assign pin locations Step 4: Verify PAD report and start a hyperterminal session Step 5: Download the Design Step 6: Operating the Real-Time UART clock

Lab 2 Intro 5 UART Real-Time Clock The design understands some simple ASCII commands – TIME – current time displayed according to 24 hour clock in format hh:mm:ss – TIME hh:mm:ss – allows time to be set according to 24 hour clock – ALARM – current alarm time will be displayed according to 24 hour clock. The current status of the alarm will be displayed (ON, OFF, Active) – ALARM hh:mm:ss – allows the alarm to be set according to the 24 hour clock. The new alarm time and current status will be displayed. – ALARM ON – Enables the alarm to be active. Current alarm time and status will be displayed. – ALARM OFF – Disables the alarm. Current alarm time and status will be displayed

Lab 2 Intro 6 PicoBlaze Hardware Design PicoBlaze uart_tx Instructions Address Instructions rx_data out_port[7:0] port_id[7:0] write_strobe D Q en port_id[0] Interrupt_ack alarm tx interrupt control Interrupt_event DCM clk 100 MHz 50 MHz D Q en uart_rx rx rx_data tx_full, tx_half_full rx_half_full rx_full 000 Baud Count en_16_x_baud You will add the DCM to the design

Lab 2 Intro 7 Basic Overview of Source Input port definition For PicoBlaze Output port definition For PicoBlaze Register Names

Lab 2 Intro 8 Basic Overview of Source Initialization Prompt user for input, Checking for “TIME” Or “ALARM” Checks to see if “TIME” Is entered correctly; Also Checks to see if a command Was entered Current time entered by user is tested, stored in PicoBlaze registers, and Transmitted to the UART for display On hyperterminal

Lab 2 Intro 9 Basic Overview of Source Checks to see if “ALARM” Is entered correctly; Also Checks to see if a command Is entered Alarm time command entered by user is tested. If an alarm time is entered, it is stored in PicoBlaze registers, and Transmitted to the UART for display on hyperterminal