Arm Enterprises IM-AD1 manual PWM interface signals Signal

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Hardware Reference

3.4PWM interface

The interface module is fitted with a dual MOSFET switch. This provides two outputs that can be configured as Pulse Width Modulated (PWM) outputs or used as DC switches to switch external loads.

The MOSFET can switch loads at up to 30V. Although the MOSFET is rated for 3A, because of the power dissipation of the package the maximum load current is 2.5A if only one PWM output is used or 1.75A if both outputs are used.

Warning

The device U21, fitted to the underside of the PCB, and the surrounding area of the board becomes very hot when high load currents are used.

As a PWM output, the interfaces can be driven by the DC-DC PrimeCell (PL160). The DC-DC PrimeCell has feedback inputs that negate the drive outputs when LOW. These inputs can be used to implement a current limit with external circuitry.

Table 3-4 shows the assignment of the PWM interface signals to the logic module signals on the EXPIM connector.

Table 3-4 PWM interface signals

Signal

EXPIM

Description

connector

 

 

 

 

 

PWM1_DRIVE

IM_BBANK37

PWM1 switch control signal

 

 

 

PWM2_DRIVE

IM_BBANK38

PWM2 switch control signal

 

 

 

PWM1_FB

IM_BBANK39

PWM1 feedback

 

 

 

PWM2_FB

IM_BBANK40

PWM2 feedback

 

 

 

Figure 3-4shows the pin numbering of the PWM connectors.

1

2

3

4

Figure 3-4 PWM interface connector (J10/J14)

3-6

Copyright © 2001-2003. All rights reserved.

ARM DUI 0163B

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Contents Integrator/IM-AD1 Integrator/IM-AD1 User GuideConformance Notices Copyright 2001-2003. All rights reserved Integrator/IM-AD1 User Guide Chapter IntroductionAppendix a Signal Descriptions Preface Using this book About this bookIntended audience Typographical conventions Further readingARM publications Third-party documents Feedback Feedback on this documentFeedback on the Integrator/IM-AD1 Xii Introduction About the Integrator/IM-AD1 ARM DUI 0163BIntegrator/IM-AD1 layout Interface module features and architecture FeaturesIntegrator/IM-AD1 block diagram ArchitectureConfig LED Links and LEDsCare of modules Introduction Copyright 2001-2003. All rights reserved Getting Started Fitting the interface module Assembled Integrator development systemSetting up the logic module Switch 2 Closed Switch 3 Open Switch 4 OpenRunning the test software Hardware Reference Hardware Reference Uart interface Serial interface signal assignment Signal nameConnector DescriptionSerial connector pinout Serial connector signal assignment Pin J18 Type DescriptionSPI signals Signal SPIPWM interface signals Signal PWM interfaceShows the signal assignment PWM connector signals Pin J14 J10 DescriptionStepper motor interface Functional descriptionStepper motor interface signal summary Therefore, with a 0.1Ω sense resistor fittedStepper motor connectors Stepper motor interface signalsStepper motor connector signals Pin J19 J23 Description VSSGpio connectors J16 and J17 GpioHardware Reference Can interface U13Buffer Can interface signal assignment Signal IMBBANK28 IMBBANK29IMBBANK30 Can connector signal assignments Pin GNDADC and DAC interfaces 10 ADC and DAC interface architectureIMABANK50 IMABANK48IMABANK49 IMABANK5111shows the pinout of the ADC interface connector J1 12 shows the pinout of the DAC interface connector J2 Hardware Reference Copyright 2001-2003. All rights reserved Reference Design Example About the design example About PrimeCellsExample architecture Vhdl file descriptions File DescriptionExample memory map Address assignment of logic modules Integrator system memory mapIntegrator/IM-AD1 memory map Logic module addresses Position Bits StackIntegrator/IM-AD1 memory map Device Address Gpiob StepperbGpioa SsramExample APB register peripheral Logic module registersOffset address Name Type Function Oscillator divisor registers LMOSCx registers Bits Name Access Function RDWVDW User LEDs control register Bits Name Access FunctionOscillator lock register Push button interrupt registerSwitches register Uart SPICS1 SPI chip select registerSPICS2 SPICS0Synchronous serial port PWM controller Cont Offset Name Access Function AddressStepper motor peripheral CountStepper x control register Docount SinglestepDIR Stepx count register Stepx speed registerData output set register Read data output pinsAddress offset Name Access Size Function Read data input registerData direction Gpio direction control 1 bitSsram interface Interrupt Interrupt source Source number Vectored interrupt controllerInterrupt sources CAN1Reference Design Example Can controller interface Can reset control registerCanreset CANxBaseAdcstatus ADC and DAC interface16 ADC and DAC interface registers ADC2BUSYPeripheral information block 18 PIB entry formatBits Name Function Signal Descriptions Expa Table A-1 AHB signal assignment Pin label Signal DescriptionExpb Table A-2 Expb signal description Pin label Name DescriptionExpim Table A-3 Expim signal descriptions LabelLM-EP20K1000E Description Logic analyzer connector Figure A-4 J7 pin locationsTable A-4 J7 connector pinout Signal Pin CLK1Figure A-5 Multi-ICE connector pinout Multi-ICE JtagMechanical Specification Figure B-1 Board dimensions top view Mechanical informationFigure B-2 Bottom board dimensions viewed from top side Connector reference DB9DUALDB9STRAIGHT FCI Glossary Multi-ICESynchronous Serial Port DAC IndexADC Can GpioExpa A-2 Gpiodataclr Gpiodatain Gpiodataout Gpiodataset GpiodirnLmleds Lmlock LMOSC1