Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Designer Reference Manual M68HC08 Microcontrollers DRM045/D Rev. 0 9/2003 MOTOROLA.COM/SEMICONDUCTORS For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Reference Design By: Bill Lucas Motorola Transportation and Standard Products Group Austin, TX To provide the most up-to-date information, the revision of our documents on the World Wide Web will be the most current. Your printed copy may be an earlier revision. To verify you have the latest information available, refer to: http://motorola.com/semiconductors The following revision history table summarizes changes contained in this document. For your convenience, the page number designators have been linked to the appropriate location. Motorola and the Stylized M Logo are registered trademarks of Motorola, Inc. DigitalDNA is a trademark of Motorola, Inc. This product incorporates SuperFlash® technology licensed from SST. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA © Motorola, Inc., 2003 DRM045 3 For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. Revision History Revision History Revision Level September, 2003 N/A Description Initial release Page Number(s) N/A Freescale Semiconductor, Inc... Date DRM045 4 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Revision History For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Table of Contents Section 1. Introduction and Setup Freescale Semiconductor, Inc... 1.1 1.2 1.3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Setup Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Section 2. Operational Description 2.1 2.2 2.3 2.3.1 2.3.2 2.4 2.5 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Push Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Red Activity Indicator LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Header and Jumpers Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Microcontroller Current Monitor Jumper Block . . . . . . . . . . . . . . . . . 11 11 11 11 11 13 14 Section 3. Pin Description 3.1 3.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 16-Pin Connector J1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Section 4. Schematic and Parts List 4.1 4.2 4.3 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Section 5. Design Considerations 5.1 5.2 5.3 5.4 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Infrared and Visible LED Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . Switch Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 21 21 22 Section 6. System Testing 6.1 6.2 6.3 6.4 6.5 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hardware/Software Testing Summary . . . . . . . . . . . . . . . . . . . . . . . FLASH Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . LED and Push Button Test Code . . . . . . . . . . . . . . . . . . . . . . . . . . . DVD Player Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Table of Contents For More Information On This Product, Go to: www.freescale.com 25 25 25 26 27 DRM045 5 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Table of Contents DRM045 6 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Table of Contents For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 1. Introduction and Setup Freescale Semiconductor, Inc... 1.1 Introduction Motorola’s ASB520, MC68HC908QT2 Infrared Remote Control Reference PC Board and software are designed to demonstrate how a simple, limited function, dedicated remote control system could be designed. The objective is to keep the design simple so a user can pick portions of interest to his design and turn them into an application specific system. This system is specifically programmed to control an APEX model 1201 DVD player. A few of the more noteworthy features of the reference PC board are listed as follows: • 8-pin MC68HC908QT2 microcontroller • Infrared LED and driver • Visible LED to show activity • Six user push buttons • MON08 programming interface for in-circuit FLASH programming • Battery holder for 3-AA cells • Microcontroller current monitor jumper block A photograph of the reference PC board appears in Figure 1-1. 1.2 About this Manual Key items can be found in the following locations in this manual: • Setup instructions are found in 1.3 Setup Guide. • Schematics are found in 4.2 Schematic. • Pin assignments for MON08 connector J1 are shown in Table 3-1. MON08 Pin Assignments. • User interfaces are described in 2.3 LEDs. • For those interested in the design aspects of the reference PC board’s circuitry, a description is provided in Section 5. Design Considerations. • System testing, hardware and software, are described in detail in Section 6. System Testing. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Introduction and Setup For More Information On This Product, Go to: www.freescale.com DRM045 7 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Introduction and Setup Figure 1-1. MC68HC908QT2 IR Reference PC Board Photograph 1.3 Setup Guide Setup for the reference design PC board can be broken into two parts. • The first is normal user operation mode. • The second is MC68HC908QT2 FLASH programming configuration. FLASH programming is explained in Section 6. System Testing. It is assumed for user operational mode, the MC68HC908QT1 has been programmed with the remote control program. If not, refer to Section 6. System Testing for FLASH programming information. Figure 2-1. PC Board shows the locations of the various jumper blocks and MON08 connector. DRM045 8 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Introduction and Setup For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Introduction and Setup Setup Guide For user operation mode, shorting jumpers need to be installed to jumper blocks JP1–JP4. Shorting jumper block JP1 is not necessary if the small PC board trace under jumper block JP1, on the bottom side of the PC board, has not been cut for microcontroller current monitoring. Freescale Semiconductor, Inc... Installation of 3-AA Alkaline batteries into the battery holder mounted on the bottom of the PC board is also required for setup. Note battery polarity on the battery holder. The PC board is now ready for use as an infrared remote control. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Introduction and Setup For More Information On This Product, Go to: www.freescale.com DRM045 9 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Introduction and Setup DRM045 10 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Introduction and Setup For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 2. Operational Description Freescale Semiconductor, Inc... 2.1 Introduction The following subsections describe the operation of the ASB520, MC68HC908QT2 infrared remote control reference design system. LEDs, switches, jumper blocks and FLASH programmer headers, and current monitor jumper block are described here. Figure 2-1 shows the locations of these items. 2.2 Push Buttons There are six push button switches resident on the lower portion of the reference PC board. They are labeled as switches SW1–SW6 on the PC board schematic. Each button has a dedicated function. The switches are labeled as POWER, PAUSE, PLAY, REVERSE, STOP, and FORWARD. These labels describe the button’s operation function related to control of a DVD player. 2.3 LEDs There are two LEDs located in the upper right hand corner of the PC board. The LED labeled D1 is an infrared LED and the one labeled D2 is a visible red LED and is used to show system activity. 2.3.1 Red Activity Indicator LED D2 is a visible red LED and is used to show IR LED activity. It blinks as long any push button is depressed 2.3.2 Infrared LED D1 is an infrared LED. It is modulated to control the DVD. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Operational Description For More Information On This Product, Go to: www.freescale.com DRM045 11 Freescale Semiconductor, Inc. Operational Description JP1 Freescale Semiconductor, Inc... JP2 JP3 J1 JP4 Figure 2-1. PC Board DRM045 12 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Operational Description For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Operational Description Header and Jumpers Blocks 2.4 Header and Jumpers Blocks There is one 16-pin header (2 x 8-pin), J1, and four 2-pin jumper blocks, JP1–JP4, on the PC board. See Figure 2-1 for their locations on the PC board. Freescale Semiconductor, Inc... The header and jumper functions are described as follows. J1: Jumper block J1 is used to program the MC68HC908QT2, located in the center of the PC board. The connections to this board follow the standard MON08 connector scheme. It is also used to put the ASB520 system into test mode. In a production environment, J1 could be replaced by a “bed of nails” test fixture to reduce PC board parts costs. JP1: Jumper block JP1 is on the PC board measure the current consumed by the microcontroller. Its primary purpose is to measure stop current of the microcontroller. A small trace on the bottom of the PC board must be cut to use this feature. When using this feature to measure stop current you should remove shorting jumper JP2. Removing the shunt from JP2 removes the system’s 470 µF bulk capacitor. Removing that capacitor will improve accuracy of the current measurement, as large capacitors have leakage current associated with them. Select the lowest voltage rating bulk capacitor for your circuit as possible because lower voltage rated ones tend to have less leakage than higher voltage ones for a given capacitance value. JP2: Jumper block JP2 disconnects the bulk capacitor during FLASH programming and optionally during stop current monitoring. The value of the capacitor is large enough to cause power switching issues when using the Cyclone programmer. During the programming procedure, the Cyclone programmer cycles power to the target PC board. Large value bulk capacitors greater than approximately 100 µF present excessive currents to the Cyclone programmer and interfere with the POR circuit of the target’s microcontroller as voltage on larger capacitance devices do not discharge fast enough during voltage cycling. The purpose for the bulk capacitor is two fold: First is tends to help lower the effects of the battery’s internal resistance during periods of high current demands while the IR LED is being modulated. This is a particular benefit toward the battery’s end of life period, when its internal resistance is increasing. Second, if a system uses RAM to store user information, the bulk capacitor will retain voltage to the microcontroller during battery changes. JP3: Jumper block JP3 disconnects pullup resistor, R9, during FLASH programming. JP4: Jumper block JP4 disconnects LED drive circuitry during FLASH programming. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Operational Description For More Information On This Product, Go to: www.freescale.com DRM045 13 Freescale Semiconductor, Inc. Operational Description 2.5 Microcontroller Current Monitor Jumper Block Freescale Semiconductor, Inc... Jumper block JP1 is intended as a connection on the PC board to measure the stop current of the MC68HC908QT2. To use the feature, you must cut the small PC board trace located on the bottom side of the PC board between the two pins of the jumper block. After cutting the trace, and when not using an amp meter to measure system current a shunt must be installed on JP1. DRM045 14 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Operational Description For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 3. Pin Description Freescale Semiconductor, Inc... 3.1 Introduction There is one connector resident on the control board, labeled J1. It is the MON08 connector. The following subsection describes signals on connector J1. 3.2 16-Pin Connector J1 Signals to and from the MON08 connector are grouped together on 16-pin (2 x 8-pin) ribbon cable connector J1. Pin assignments for connector J1 are shown in Table 3-1. In a production environment, J1 could be replaced by a “bed of nails” test fixture to reduce PC board parts costs. Table 3-1. MON08 Pin Assignments Pin Number 1, 3, 4, 5, 7, 9, 11,14, 16 Function No connect 2 GND 6 VTST (PTA2) 8 COM (PTA0) 10 MOD1 (PTA4) 12 MOD0 (PTA1) 13 OSC1 (PTA5) 15 VDD Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Pin Description For More Information On This Product, Go to: www.freescale.com DRM045 15 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Pin Description DRM045 16 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Pin Description For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 4. Schematic and Parts List 4.1 Introduction Freescale Semiconductor, Inc... Schematic and parts list detail are documented in this section. 4.2 Schematic A schematic of the reference design PC board appears in Figure 4-1. Unless otherwise specified, capacitor values are in microfarads, resistor values are in ohms. All resistors are specified as 1/4-watt ± 5%, and interrupted lines coded with the same letters are electrically connected. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Schematic and Parts List For More Information On This Product, Go to: www.freescale.com DRM045 17 2 - BATTERY BAT1 + 1 2 JP1 1 PTA5 Idd_TEST 1 Vdd 2 Vbat For More Information On This Product, Go to: www.freescale.com Schematic and Parts List 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 2 4 6 8 10 12 14 16 + JP2 MON08 CONNECTOR 1 3 5 7 9 11 13 15 J1 470uF C1 CAP_DISC 10 R7 2 2 1 1 Vdd PTA4 10M 16MHz 47K R8 X1 4 3 U1 Vdd SW4 REV SW5 STOP SW6 FWD SW3 PLAY SW2 PAUSE SW1 POWER R9 3.3K SW_DISC JP3 Vss R13 220 R14 470 R15 1k R12 2.2k R11 4.7K PTA2/IRQ/KBI2 PTA1/AD1/TCH1/KBI1 PTA0/AD0/TCH0/KBI0 NITRON_8_PIN_ADC PTA3/RST/KBI3 PTA4/OSC2/AD2/KBI4 PTA5/OSC1/AD3/KBI5 Vdd PTA1_ATD1 R10 2 1 5 6 7 8 Figure 4-1. ASB520 PC Board Schematic PTA2 PTA0 PTA4 PTA1_ATD1 0.1 C2 Vdd PTA5 2 2 18 1 DRM045 1 Vdd 2 IR_DISC 1 JP4 2 PTA2 PTA1_ATD1 1 PTA0 Freescale Semiconductor, Inc... R5 47K 1K R4 330 R2 D2 RED Q1 2N3904 R1 47K R6 470 IR_LED D1 R3 47 2N3906 Q2 Vbat Freescale Semiconductor, Inc. Schematic and Parts List Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Freescale Semiconductor, Inc. Schematic and Parts List Parts List 4.3 Parts List The following parts list describes the parts content for the IR reference PC board. Table 4-1. Reference PC Board Parts List Freescale Semiconductor, Inc... Designators Qty. Description Manufacturer Part Number BAT1 1 3-AA Battery Holder Digi-Key 2464K-ND C1 1 470 µF [email protected] Digi-Key P5508-ND C2 1 0.1 µF Capacitor Digi-Key 399-2127-ND D1 1 Infrared LED Digi-Key 160-1061-ND D2 1 Red LED Digi-Key 160-1061-ND J1 1 2 x 8 Pin Header(1) Digi-Key S2211-36-ND(1) JP1–JP4 4 2 Pin Header(1) Digi-Key S1211-36-ND(1) Q1 1 2N3904 Digi-Key 2N3904-ND Q2 1 2N3906 Digi-Key 2N3906-ND R1, R8, R5 3 Resistor(2) Digi-Key 47QBK-ND Resistor(2) Digi-Key 47QBK-ND 47K Ohm R3 1 47 Ohm R4, R15 2 1K Ohm Resistor(2) Digi-Key 1.0KQBK-ND R13 1 220 Ohm Resistor(2) Digi-Key 220QBK-ND R2 1 330 Ohm Resistor(2) Digi-Key 330QBK-ND R6, R14 2 470 Ohm Resistor(2) Digi-Key 470QBK-ND R7 1 10 Ohm Resistor(2) Digi-Key 10QBK-ND R9 1 3.3K Ohm Resistor(2) Digi-Key 3.3KQBK-ND R11 1 4.7K Ohm Resistor(2) Digi-Key 4.7KQBK-ND Digi-Key 1.0MQBK-ND Resistor(2) R10 1 1 Meg Ohm R12 1 2.2K Ohm Resistor(2) Digi-Key 2.2KQBK-ND SW1–SW6 6 Momentary Push Button Switch Digi-Key CKN9009-ND U1 1 Nitron 8-pin DIP with A/D and 1.5K FLASH Digi-Key MC68HC908QT1CP X1 1 16.00 MHz Resonator Digi-Key X908-ND No Designator (optional) 1 8-pin socket for U1 Digi-Key A400-ND No Designator 1 2-56 x 3/8” nylon screw Any Any No Designator 1 2-56 nylon nut Any Any Digi-Key 3M4008-ND (3) No Designator 1 Tape, double-sided foam 1/8” x 1” No Designator 1 ASB520 Bare PCB DS Electronics ASB520 No Designator 4 Shunts for JP1–JP4 Digi-Key S9000-ND No Designator 3 AA Alkaline Battery Any Any 1. Shipped in strips of 36 x 1 or 36 x 2. Cut to length. 2. All resistors are 1/4 W with a tolerance of 5% unless otherwise noted. 3. Cut to size. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Schematic and Parts List For More Information On This Product, Go to: www.freescale.com DRM045 19 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Schematic and Parts List DRM045 20 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Schematic and Parts List For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 5. Design Considerations Freescale Semiconductor, Inc... 5.1 Introduction Microcontroller systems, in general, have a number of important design considerations related to PC board layout and grounding considerations. These design considerations are discussed in 5.2 Grounding, 5.3 Infrared and Visible LED Drive Circuit, and 5.4 Switch Circuitry. A description of two of the reference board’s major circuits are included in 5.3 Infrared and Visible LED Drive Circuit and 5.4 Switch Circuitry. 5.2 Grounding PC board layout is an important design consideration. In particular, ground planes and how grounds are tied together influence noise immunity. To maximize oscillator noise immunity, it is a good practice have ground plane under the resonator, X1. One good grounding practice is to carry all of the ground connections, in a star configuration, to a single point which could be the power supply’s bulk capacitor or in this case, the battery ground terminal. 5.3 Infrared and Visible LED Drive Circuit Figure 5-1 is the driver schematic, used to drive both LEDs on the PC board. Because the microcontroller will not source or sink enough current to drive the two LEDs, a discrete driver is necessary. This circuit uses two transistors. The first transistor is a small signal NPN, followed by a small signal PNP transistor. Vbat R1 47K R2 Q2 2N3906 330 JP4 To PTA0 1 1 2 IR_DISC R4 2 1K Q1 2N3904 R6 470 R5 47K D2 RED R3 47 D1 IR_LED Figure 5-1. Infrared LED Drive Circuit Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Design Considerations For More Information On This Product, Go to: www.freescale.com DRM045 21 Freescale Semiconductor, Inc. Design Considerations A logic 1 from port A, bit 0 will turn the NPN transistor on, driving its collector low. The low level applied to the base of the PNP transistor, Q2, will drive its emitter to collector into conduction, illuminating the two LEDs. Resistor R5 is in place to guarantee that Q1 is biased off during initial power on and before the microcontroller’s program has configured port A, bit 1 to behave as a digital output. 5.4 Switch Circuitry Freescale Semiconductor, Inc... A simple circuit is used to give the ability of reading several switches into an A/D port. Figure 5-2 shows the circuit. This circuit has the advantage of using only one I/O pin for the six switches. Using a switch matrix and the keyboard interrupt pins is an alternative approach, but in this case would require a microcontroller with more I/O pins. JP3 SW_DISC 1 1 2 2 Vdd R9 3.3K POWER PTA1_ATD1 SW1 PLAY R11 4.7K SW2 FWD R12 2.2k SW3 REV R15 1k SW6 PAUSE R14 470 SW5 STOP R13 220 SW4 Figure 5-2. Switch Circuitry DRM045 22 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Design Considerations For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Design Considerations Switch Circuitry The spreadsheet in Table 5-1 gives the decimal values seen by the A/D, based on which switch is depressed. Because the voltage from the switches is ratiometric to VDD, power supply variation will have no effect on A/D readings. Table 5-1. Switch Input A/D Values Switch Ideal Value Minus 6% Plus 6% 255 239.7 255 Power 170.5 160.3 180.7 Play 127.7 120 153.3 Forward 79.9 75.1 84.7 Reverse 40.8 38.4 43.3 Pause 14.8 13.9 15.6 0 0 0 Freescale Semiconductor, Inc... No switch Stop The ±6% values in Table 5-1 indicate worst case values, as the resistors used in the design are ±5%. The software uses the minimum values from the table to decode the switches. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA Design Considerations For More Information On This Product, Go to: www.freescale.com DRM045 23 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... Design Considerations DRM045 24 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board Design Considerations For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Designer Reference Manual — DRM045 Section 6. System Testing Freescale Semiconductor, Inc... 6.1 Introduction This section will first explain how to program the control program into FLASH memory of the MC68HC908QT2 microcontroller. It will then, in detail, provide functional testing of both hardware and user software for the ASB520 infrared remote control reference design. 6.2 Hardware/Software Testing Summary Because the PC board has minimal user interface, hardware testing will be performed in stages. • First the control program will be programmed into the MC68HC908QT2’s FLASH memory. • The keyboard and red LED will be tested next. • Finally, the ASB520 PC board will be used to control a DVD. 6.3 FLASH Programming The following steps are used to initially program the MC68HC908QT2: 1. If installed, remove the batteries from the battery holder located on the bottom of the PC board 2. Remove jumpers JP1–JP4. 3. Connect the P&E Microcomputer Systems, Inc. MON08 Cyclone’s ribbon cable from the programmer to J1, noting the location of pin 1 on J1. Follow the P&E Microcomputer Systems, Inc. instructions to program the MC68HC908QT2, with the remote control program file. The file name to program into the device is ASB520.S19. After FLASH programming is complete, disconnect the Cyclone’s ribbon cable connected to J1 of the ASB520 PC board. In a production environment, the Cyclone Programmer can be setup so that a single press of a button will initiate an automatic programming operation. The Application Program would be pre-loaded into nonvolatile memory in the Cyclone and no PC would need to be present during production programming. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA System Testing For More Information On This Product, Go to: www.freescale.com DRM045 25 Freescale Semiconductor, Inc. System Testing 6.4 LED and Push Button Test Code Freescale Semiconductor, Inc... Test code is embedded in the ASB520 control program. This test code will test the switches, LED drive circuitry and visible LED, D2. The infrared led, D1, is illuminated, but you can’t see it. To run the test program, follow the next 12 steps: 1. Connect a jumper lead between pins 2 and 6 on connector J1. 2. Install shorting jumpers on jumper blocks JP1–JP4 3. Install 3-AA Alkaline batteries into the battery holder mounted on the bottom of the PC board. Note battery polarity on the battery holder. When the last battery is installed, you will see the red LED, D2, flash five times. 4. Depress the POWER switch, SW1. The red LED will flash once, delay for approximately 2 seconds, flash again and continue that sequence until the button is released. You will note the POWER button is SW1; thus one blink. (This is the sequence for the remainder of the switches.) 5. Depress the PAUSE switch, SW2. The red LED will flash twice, delay for approximately 2 seconds, flash twice again and continue that sequence until the button is released. 6. Depress the PLAY switch, SW3. The red LED will flash three times, delay for approximately 2 seconds, flash three times again and continue that sequence until the button is released. 7. Depress the REVERSE switch, SW4. The red LED will flash four times, delay for approximately 2 seconds, flash four times again and continue that sequence until the button is released. 8. Depress the STOP switch, SW5. The red LED will flash five times, delay for approximately 2 seconds, flash five times again and continue that sequence until the button is released. 9. Depress the FORWARD switch, SW6. The red LED will flash six times, delay for approximately 2 seconds, flash six times again and continue that sequence until the button is released. 10. Remove one battery. It doesn’t matter which one. 11. Remove the jumper lead from connector J1. 12. Replace the battery. (The system is now in user mode.) All hardware except for the infrared diode, D1, has been tested at this point. DRM045 26 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board System Testing For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. System Testing DVD Player Control Test 6.5 DVD Player Control Test To test the infrared diode and the rest of the system in user mode, install a music CD in the APEX model 1201 DVD player. Music CDs appear to respond faster than video CD’s in this CD player. Freescale Semiconductor, Inc... To test the software, infrared diode and the rest of the ASM520 PC board, follow these steps: 1. Configure the television and DVD player, following the instructions provided with the DVD player. 2. On the DVD player, depress the power switch on the left side of the DVD player to turn it on. 3. On the DVD player, depress the OPEN/CLOSE switch located to the right of the DVD drawer to open the DVD drawer. 4. Install a music CD in the APEX model 1201 DVD player. 5. Depress the OPEN/CLOSE switch on the DVD player to close the DVD drawer. 6. Wait for the yellow LED, located on the lower right hand end of the DVD player, labeled MP3/CD JPEG to illuminate. It can take up to 10 seconds on this DVD player. 7. Point the ASB520 board with LED D1 toward the DVD player and depress the POWER switch on the ASB520 PC board to turn the DVD player off. 8. Verify the yellow MP3/CD JPEG LED turns off. 9. Point the ASB520 board with LED D1 toward the DVD player and again, press the POWER switch on the ASB520 PC board. In approximately 10 seconds, the MP3/CD JPEG LED will once again illuminate. This delay is a function of the DVD player and not the controller. 10. Point the ASB520 board with LED D1 toward the DVD player and depress the PLAY switch on the ASB520 PC board. The first song on the CD will play. 11. Point the ASB520 board with LED D1 toward the DVD player and depress the PAUSE switch on the ASB520 PC board. The music will stop playing. 12. Point the ASB520 board with LED D1 toward the DVD player and depress the PLAY switch on the ASB520 PC board. The music will resume at the point it was paused. 13. Point the ASB520 board with LED D1 toward the DVD player and depress the STOP switch on the ASB520 PC board. The music will stop playing. 14. Point the ASB520 board with LED D1 toward the DVD player and depress the PLAY switch on the ASB520 PC board. The music will restart at the beginning of the song. Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board MOTOROLA System Testing For More Information On This Product, Go to: www.freescale.com DRM045 27 Freescale Semiconductor, Inc. System Testing Freescale Semiconductor, Inc... 15. Point the ASB520 board with LED D1 toward the DVD player and depress the REVERSE switch on the ASB520 PC board. The music will back-up, at a high rate, until it reaches the beginning of the song, at which time it will restart the song. 16. Point the ASB520 board with LED D1 toward the DVD player and depress the FORWARD switch on the ASB520 PC board. The music will play very fast. 17. Point the ASB520 board with LED D1 toward the DVD player and depress the PLAY switch on the ASB520 PC board. The music will resume at normal rate. 18. Power to the DVD player may now be turned off by depress the power switch on the left side of the DVD player. This completes the hardware and software testing of the ASB520 infrared remote controller system. The controller is ready for use with the APEX model 1201 DVD player. DRM045 28 Using the ASB520 MC68HC908QT2 Based Infrared Remote Control Reference PC Board System Testing For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution P.O. Box 5405 Denver, Colorado 80217 1-800-521-6274 or 480-768-2130 Freescale Semiconductor, Inc... JAPAN: Motorola Japan Ltd. SPS, Technical Information Center 3-20-1, Minami-Azabu, Minato-ku Tokyo 106-8573, Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd. Silicon Harbour Centre 2 Dai King Street Tai Po Industrial Estate Tai Po, N.T., Hong Kong 852-26668334 HOME PAGE: http://motorola.com/semiconductors Information in this document is provided solely to enable system and software implementers to use Motorola products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”, must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. MOTOROLA and the Stylized M Logo are registered in the US Patent and Trademark Office. All other product or service names are the property of their respective owners. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. © Motorola Inc. 2003 DRM045/D Rev. 0 9/2003 For More Information On This Product, Go to: www.freescale.com