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Spectrum Digital TMS320LF2407 Technical Reference

Evaluation module
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Spectrum Digital TMS320LF2407 Technical Reference

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  • Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
  • Page 2 TMS320LF2407 Evaluation Module Technical Reference 2001 DSP Development Systems Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 3 TMS320LF2407 Evaluation Module Technical Reference 504885-0001 Rev. D January 2001 SPECTRUM DIGITAL, INC. 12502 Exchange Dr., # 440 Stafford, TX. 77477 Tel: 281.494.4505 Fax: 281.494.5310 sales@spectrumdigital.com www.spectrumdigital.com Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 4 IMPORTANT NOTICE Spectrum Digital, Inc. reserves the right to make changes to its products or to discontinue any product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current.
  • Page 5 1.1 Key Features of the TMS320LF2407 EVM ........

  • Page 6: Table Of Contents

    A TMS320LF2407 EVM PAL Equations ........
  • Page 7 (EVM). The EVM is based on the Texas Instruments TMS320LF2407 Digital Signal Processor. The TMS320LF2407 EVM is a table top card to allow engineers and software developers to evaluate certain characteristics of the TMS320LF2407 DSP to determine if the processor meets the designers application requirements. Evaluators can create software to execute onboard or expand the system in a variety of ways.
  • Page 8 Evaluation Module along with the key features and a block diagram of the circuit board. Topic Page Overview of the TMS320LF2407 EVM Key Features of the TMS320LF2407 EVM Functional Overview of the TMS320LF2407 EVM Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 9 LF2407 family of processors. The LF2407 EVM is shipped with a TMS320LF2407 DSP. The EVM allows full speed verification of LF2407 code. With 544 words of onchip data memory, 128K words of onboard memory, onchip flash rom, on chip UART, and an MP7680 Digital to Analog Converter, the board can solve a variety of problems as shipped.
  • Page 10 Spectrum Digital, Inc 1.2 Functional Overview of the TMS320LF2407 EVM Figure 1-1 shows a block diagram of the basic configuration for the LF2407 EVM. The major interfaces of the EVM include the target ram, analog interface, CAN interface, serial boot rom, user leds and switches, RS232 interface, SPI data logging interface, and expansion interface.
  • Page 11 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 12 Chapter 2 Operation of the TMS320LF2407 Evaluation Module This chapter describes the operation of the TMS32LF2407 Evaluation Module along with the key interfaces and an outline of the circuit board. Topic Page The TMS320LF2407 EVM Operation The TMS320LF2407 EVM Board 2.1.1...
  • Page 13 User Programmable LEDs 2-24 2.14 Resets 2-25 2.15 Reset Switch 2-25 2.16 User Readable Switches 2-25 2.17 ON/OFF Switch 2-25 2.18 Test Points 2-26 TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 14 Spectrum Digital, Inc 2.0 The TMS320LF2407 EVM Operation This chapter describes the LF2407 Evaluation module, its key components, and how they operate. It also provides information on the EVM’s various interfaces. The LF2407 EVM consists of six major blocks of logic.
  • Page 15 It is important to remember that internal memory has a higher precedence than the external memory. For more information on the memory in the device populated in your EVM card please refer to Texas Instruments TMS320LF2407 Users Guide. Futhermore, it is important to take into account that external memory is affected by wait-states.
  • Page 16 Spectrum Digital, Inc Figure 2-2 below shows the memory timing on the EVM320LF2407. CLKOUT ADDRESS DATA READ WRITE STRB- RAMOE- RAMWE- Figure 2-2, Zero Wait State Memory Timing Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 17 B0’ (CNF = 1) B0’ (CNF = 1) External RAM (CNF = 0) FFFF FFFF External RAM (CNF = 0) Figure 2-3, Program Memory Configurations TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 18 Spectrum Digital, Inc 2.2.2 Data Memory The data memory configuration is shown below. External RAM is enabled from 0x8000-0xffff. 0000 Memory-Mapped Register and Reserved 005F 0060 On-Chip 007F DARAM B2 0080 Reserved 01FF 0200 On-Chip DARAM B0 (CNF = 0)
  • Page 19 Configuration 2.3 User Switches and LEDs The TMS320LF2407 EVM has 4 switches and 4 LEDs that are available for user applications.These devices are I/O mapped at locations 0x0008 and 0x000C respectively on data bits D0-D3. To access these devices the “IN” and “OUT”...
  • Page 20 Spectrum Digital, Inc 2.5 Digital to Analog Converter The TMS320LF2407 EVM provides four (4) 12-bit D/A channels. The output is from 0 to 3.3 volts DC. The converter is mapped into I/O address space 0x0000 to 0x0004. Locations 0x0000 through 0x0003 are used for the data holding registers for channels 1-4 respectively.
  • Page 21 * SPISIMO/IOPC2 * SPISOMI/IOPC3 * SPICLK/IOPC4 * SPISTE/IOPC5 * Signal is interfaced through a quick switch to allow 5 volt tolerant inputs. TMS320LF2407 Evaluation Module Technical Reference 2-10 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 22 Spectrum Digital, Inc 2.6.1.2 Expansion Analog Connector The definition of P2, which has the analog signals is shown below. Table 3: P2 Analog Pin # Signal Pin # Signal VCCA, +5V Analog VCCA, +5V Analog TMS2/IOPD7 * IOPF6 ADCIN2 ADCIN3...
  • Page 23 The definition of P3, which has the address and data signals is shown below. Table 4: P3 Address/Data Pin # Signal Pin # Signal TMS320LF2407 Evaluation Module Technical Reference 2-12 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 24 Spectrum Digital, Inc 2.6.1.4 Expansion Control Connector The definition of P4, which has the control signals is shown below. Table 5: P4 Control Pin # Signal Pin # Signal VCC, +5 Volts VCC, +5 Volts WR-/IOPC0 STRB- R/W- READY PDPINTB-...
  • Page 25 Spectrum Digital, Inc 2.7 JTAG Interface. The TMS320LF2407 Evaluation Module is supplied with a 14 pin header interface, P5. This is the standard interface used by JTAG emulators to interface to Texas Instruments DSPs. The pinout for the connector is shown below:...
  • Page 26 Spectrum Digital, Inc 2.9 On-Chip Asynchronous Serial Port The TMS320LF2407 DSP has an on-chip asynchronous serial port. This port is brought out to connector P6 on the EVM320LF2407. Connector P6 is a DB9 female connector. This RS232 connector allows the user to connect an external instrument or computer to the EVM320LF2407.
  • Page 27 Table 9: CAN Mating Plugs Vendor Part # Digikey CP-2040 LZR Electronics MD40 TMS320LF2407 Evaluation Module Technical Reference 2-16 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 28 1 x 3 BOOTEN Select Each jumper on the TMS320LF2407 EVM is a 1x3 jumper. Each jumper must have the selection 1-2 or 2-3. The #2 pin is the center pin. The #1 pin has a square solder pad and can be seen from the solder side of the printed circuit board. This pin is usually marked with a ‘1’...
  • Page 29 The table below shows the positions and their functions. Table 11: Jumper JP1 Position Function Disable Termination Resistor Enable Termination Resistor TMS320LF2407 Evaluation Module Technical Reference 2-18 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 30 Spectrum Digital, Inc 2.11.2 Jumper JP2, CAN Input Select Jumper JP2 is used to select the source of the CANRX input signal. If position 1-2 is selected the CAN input signal is connected to the CAN receiver. Using position 2-3 allows the CANRX/IOPC7 connected to the expansion connector P4, pin 24 to be used as the signal source.
  • Page 31 Spectrum Digital, Inc 2.11.5 Jumper JP5, Enable/Disable Flash Programming Jumper JP5 is connected to the VCCP pin of the TMS320LF2407. On the LF2407 device this pin enables the programming of the internal flash memory. It also allows disabling the watchdog timer module. Refer to the LF2407 User’s Guide for the programming sequence to disable the watchdog timer.
  • Page 32 Spectrum Digital, Inc 2.11.8 Jumper JP8, VREFHI Select Jumper JP8 is used to select the source for the VREFHI pin on the TMS320LF2407. Position 1-2 selects the VCCA power which is +3.3 volts. If position 2-3 is used trim pot R1 is used which allows a variable VREF High from 0-3.3 volts.

  • Page 33: Jumper Jp11, Enable/Disable Rts To Bio-/Iopc1

    The table below shows the positions and their functions. Table 22: Jumper JP12 Position Function Enables P6 RXD to DSP SCIRXD/IO Disables P6 RXD to DSP SCIRXD/IO TMS320LF2407 Evaluation Module Technical Reference 2-22 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 34: Jumper Jp13, Oscillator Source Select

    The jumper JP15 allows the user to select the source of the on chip bootloader. The user can either select the SPI or SCI resource on the TMS320LF2407. Using position 1-2 selects the SPI as the bootloader source. The 2-3 position allows the SCI to be used as the source.

  • Page 35: Jumper Jp16, Booten Select

    Disable boot loading Enables boot loading 2.12 Status LEDs The TMS320LF2407 EVM has three status light emitting diodes. Two of these are under software control. DS3 is ‘on’ when power is applied. These are shown in the table below. Table 27: Status LEDs...

  • Page 36: Resets

    Spectrum Digital, Inc 2.14 Resets There are multiple resets for the TMS320LF2407 EVM. The first reset is the power on reset which is generated by the power regulator, U12. This device waits until power is within the specified voltage range before releasing the power on reset pin to the TMS320LF2407.

  • Page 37: Test Points

    Spectrum Digital, Inc 2.18 Test Points Two test points are provided on the TMS320LF2407 EVM. They are connected to the GND, and analog ground planes. These are used for connecting test instrument’s ground probes. The table below shows the test points and their signals.
  • Page 38 Appendix A TMS320LF2407 EVM PAL Equations This appendix lists the two PAL logic equations that are used on the TMS320LF2407 Evaluation Module (EVM). Topic Page Decode PAL Equations Glue Logic PAL Equations Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 39: Decode Pal Equations

    A.1 Decode PAL Equations The following PAL equations are used for the decode logic ** 504883a.tdl ** Drawing Number: 504883a ** Title: TMS320LF2407 EVM Decode ** Customer Name: Spectrum Digital Inc. ** Company: Spectrum Digital Inc. ** Engineer: Ron Peterson...
  • Page 40 Spectrum Digital, Inc /* Output enables */ Ramoe.oe = 1; Ramwe.oe = 1; Dac.oe = 1; Xfer.oe = 1; Leds.oe = 1; Switches.oe = 1; Buffen.oe = 1; /* equations */ Ramoe = (( Ds | Ps ) & Rw & Strb );...
  • Page 41 ( 0, 0, 0, 1, 1, 0, 0, 1, 1 => 1, 1, 1, 1, 0, 1, 0 ); /* Write LED’s #endif TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 42: Glue Logic Pal Equations

    A.2 Glue Logic PAL Equations The following PAL equations are used for the glue logic control. ** 504884b.tdl ** Drawing Number: 504884 ** Title: TMS320LF2407 EVM Decode ** Customer Name: Spectrum Digital Inc. ** Company: Spectrum Digital Inc. ** Engineer: Ron Peterson...
  • Page 43 ( 1, 1, 1, 1, 1 => 1, 1 ); /* Close latch ( 1, 1, 1, 0, 0 => 1, 1 ); /* Holding old value #endif TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 44 Appendix B TMS320LF2407 EVM Schematics This appendix contains the schematics for the TMS320LF2407 EVM. The schematics were drawn on ORCAD. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 45 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 46 Spectrum Digital, Inc Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 47 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 48 Spectrum Digital, Inc Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 49 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 50 Spectrum Digital, Inc Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 51 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 52 Spectrum Digital, Inc Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 53 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference B-10 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 54 Appendix C DAC7625 Digital-to-Analog Converter Programming Information This appendix contains the programming information for the DAC7625 Digital-to-Analog Converter(DAC) as it is used on the EVM320LF2407 Evaluation Module (EVM). Topic Page DAC7625 Digtial-to-Analog Converter DAC7625 Pin Configuration DAC7625 Pin Assignment Theory of Operation Analog Outputs Reference Inputs Digital Interface...

  • Page 55: Dac7625 Digital-To Analog Converter

    DAC C OUTC Register C Register C Logic Input DAC D OUTD Register D Register D RESET LDAC REFL BLOCK DIAGRAM - DAC7625 TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 56: Dac7625 Pin Configuration

    Spectrum Digital, Inc C.2 DAC7625 Pin Configuration DIP PACKAGE (TOP VIEW) REFH REFL OUTB OUTC OUTD OUTA RESET LDAC (LSB)DB0 DB11 (MSB) DB10 DAC7625 PIN CONFIGURATION Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 57 DAC D Voltage Output OUTD DAC C Voltage OUtput OUTC Reference Input Voltage Low. Set minimum output voltage for all DACs. REFL TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 58: Theory Of Operation

    Spectrum Digital, Inc C.4 Theory of Operation The DAC7625 is a quad, voltage output, 12 bit digital-to-analog converter (DAC). The architecture is a classic R-2R ladder configuration followed by an operational amplifier that serves as a buffer. Each DAC has its own R-2R ladder network and output op-amp, but all share the reference voltage inputs.

  • Page 59: Digital Interface

    Transparent Latched Transparent Latched Readback Latched Readback Latched Readback Latched Readback Latched NONE (All Latched) Transparent NONE (All Latched) Latched Reset Reset TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 60: I/O Mapping

    Spectrum Digital, Inc C.8 I/O Mapping The DAC7625 DAC resides at addresses 0x0000-0x0004 in the I/O address space on the EVM420LF2407 These are write only locations. Locations 0x0000 - 0x0003 contain the holding registers for channels 1-4 respectively. By writing to location 0x0004 the data presently in the individual channel holding registers is transferred to the DACs for output conversion.
  • Page 61 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...

  • Page 62: D Evm320 Mechanical Information

    Appendix D EVM320 Mechanical Information This appendix contains the mechanical information about the EVM and Wire Wrap Prototype Modules produced by Spectrum Digital. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 63 Spectrum Digital, Inc TMS320LF2407 Evaluation Module Technical Reference Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 64 Printed in U.S.A., January 2001 504885-0001 Rev. D Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
  • Page 65 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...

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