Texas Instruments MSP53C391 User Manual
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Texas Instruments MSP53C391 User Manual

Texas Instruments MSP53C391 User Manual

Speech synthesizers
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MSP53C391 and MSP53C392
Speech Synthesizers
User's Guide
May 2000
SPSU016A
Printed on Recycled Paper

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Summary of Contents for Texas Instruments MSP53C391

  • Page 1 MSP53C391 and MSP53C392 Speech Synthesizers User’s Guide May 2000 SPSU016A Printed on Recycled Paper...
  • Page 2 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete.
  • Page 3 Preface Read This First How to Use This Manual This document contains the following chapters: Chapter 1 –Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers Chapter 2 –MSP53C391 Hardware Description Chapter 3 –MSP53C392 Hardware Description Chapter 4 –MSP53C391 and MSP53C392 Software Description Appendix A –Editing Tools and Data Preparation...

  • Page 5: Table Of Contents

    Contents Contents Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers ....Description ..............
  • Page 6 ............MSP53C391/392 Timing Considerations .
  • Page 7 ......2–2 MSP53C391 Interfacing Diagram (Method 2: Interrupt 1) ......

  • Page 8: Introduction To The Msp53C391 And Msp53C392 Speech Synthesizers

    Chapter 1 Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers Topic Page Description ...........

  • Page 9: Description

    MSP53C391 and MSP53C392 are standard slave synthesizers from Texas Instruments that accept compressed speech data from another microproces- sor and produce speech with that data. This allows the MSP53C391 and MSP53C392 to be used with a master microprocessor in the various speech products including electronic learning aids, games, and toys.

  • Page 10: Msp53C391 And Msp53C392 Comparison

    The MSP53C392 is optimized to support an 8-bit wide data transfer protocol. The use of the 4-bit wide protocol in the MSP53C391 frees up some I/O pins that can be used for other purposes. These pins (EOS and BUSY) can be used to simplify the interface by minimizing the need to periodically poll the MSP53C391 for its current status.

  • Page 11: Msp53C391 Terminal Functions

    End of speech signal. Output high when end of speech is reached. INIT Initialize input. When INIT goes low, the clock stops, the MSP53C391 goes into low-power mode, the program counter is set to zero, and the contents of the RAM are retained.

  • Page 12: Msp53C392 Pin Assignments

    RAM are retained. An INIT pulse of 1 µs is sufficient to reset the processor. OSC IN This signal should be connected to Vss. Read/write signal STROB Strobe signal for read/write – 5-V nominal supply voltage – Ground pin Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers...

  • Page 13: D/A Information

    D/A Information 1.5 D/A Information Two-Pin Push Pull (Option 1) is selected in MSP53C391 and MSP53C392 that can directly drive a 32-Ω speaker. Please refer to the MSP50x3x Mixed Signal Processor Users Guide (literature number: SPSU006B) for more information on the D/A and amplifier circuit.

  • Page 14: Topic Page

    Chapter 2 MSP53C391 Hardware Description Topic Page MSP53C391 Interface Overview ....... .

  • Page 15: Msp53C391 Interface Overview

    MSP53C391 when the STROB is pulsed low. If the R/W is high, then a read from the MSP53C391 is done when the STROB is pulsed low. If the R/W is low, then data is written to the MSP53C391 when the STROB is pulsed low.

  • Page 16: Msp53C391 Signal Description

    Reset signal. A low pulse to reset the chip. It can also be used to stop the MSP53C391 operation during speech synthesis. Following the rising edge of the INIT pulse, a delay of up to 5 ms will be required to permit the MSP53C391 to com- pletely initialize its internal condition.

  • Page 17: Msp53C391 Interfacing Diagram (Method 1: Polling)

    Read/write signal DATA 0–3: 4-bit data line BUSY: Active low busy signal form MSP53C391. A high signal indicates that the MSP53C391 is not busy and is ready to accept data. EOS: End-of-speech data. A high signal indicates end-of-speech. Two bytes of dummy data writen resets the EOS to low.
  • Page 18 BUSY and EOS. 3) The master microprocessor sets STROB high. If the BUSY signal was high in step 2, the MSP53C391 is not busy and is ready to accept a write operation. If the BUSY signal was low in step 2, the MSP53C391 is not ready to accept a write operation and the read operation should be repeated until BUSY is asserted high.

  • Page 19: Msp53C391 Interfacing Diagram (Method 2: Interrupt 1)

    DAC+ Output Port INIT TO SPEAKER OR DAC– AMPLIFIER/FILTER I/O Port DATA3 I/O Port DATA2/EOS I/O Port DATA1 I/O Port DATA0 NOTE A: IRQ: Negative edge interrupt to master microprocessor when MSP53C391 is not busy and ready to accept data.
  • Page 20 The EOS is used to signal that the end-of-speech has been reached. In this case, the master microprocessor should stop trying to send data and act to re- set the MSP53C391 so as to prepare it to accept additional commands or syn- thesis data.

  • Page 21: Msp53C391 Interfacing Diagram (Method 3: Interrupt 2)

    RESET Operation 1) Perform a read operation to determine that the EOS signal is high. 2) If the EOS signal is high, write 2 bytes of dummy data to the MSP53C391 by repeating the write operation four times as described previously.
  • Page 22 The reset can be done in one of two ways: Pulsing the INIT pin low and then waiting for the MSP53C391 to re-ini- tialize itself or by writing two dummy bytes to the MSP53C391.

  • Page 23: Master Microprocessor Interface Timing

    Master Microprocessor Interface Timing 2.4 Master Microprocessor Interface Timing 2.4.1 Timing Method 1: Polling Data Transfer STROB DATA0 – 3 DATA3/BUSY DATA2/EOS NOTE A: State A: Polling the status by reading the BUSY and EOS State B: Write operation End-of-Speech STROB DATA0 –...

  • Page 24: Timing Method 2: Interrupt 1

    NOTE A: State A: Read the EOS state State B: Write operation End-of-Speech STROB DATA0 – 3 DATA2/EOS NOTE A: State A: EOS detected by read DATA2/EOS State B: Dummy write. A 4-byte dummy write resets the EOS for the next transfer. MSP53C391 Hardware Description 2-11...

  • Page 25: Timing Method 3: Interrupt 2

    Master Microprocessor Interface Timing 2.4.3 Timing Method 3: Interrupt 2 Data Transfer STROB DATA0 – 3 NOTE A: State A: Write operation End-of-Speech STROB DATA0 – 3 NOTE A: State A: EOS detected by read on pin 6 State B: Dummy write. A 4-nibble dummy write resets the EOS for the next transfer. 2-12...

  • Page 26: Msp53C391 Device Initialization

    MSP53C391 Device Initialization 2.5 MSP53C391 Device Initialization For proper operation, the MSP53C391 device should be initialized by sending the following command sequence of bytes: F,F,F,F,0,A,0,1,0,0,F,F,F,F,F,F Following this command sequence, the normal command sequence options are available as described in Section 4.2 and onwards.

  • Page 27: Msp53C392 Hardware Description

    MSP53C392 Hardware Description Topic Page MSP53C391 Interface Overview ....... . Signal Description .

  • Page 28: Interface Overview

    1 µs is enough to reset the device. Following the rising edge of the INIT pulse, a delay of up to 5 ms will be required to permit the MSP53C391 and MSP53C392 to completely initialize its internal condition.

  • Page 29: Msp53C392 Signal Description

    Signal Description 3.2 Signal Description Table 3–1. MSP53C392 Signal Description Description Name DAC+ PDM-style DAC used for speech output. DAC– DATA7/BUSY 16 The BUSY signal can be obtained on DATA 7 during a read operation. A high signal indicates that the MSP53C392 is not BUSY and ready to accept data. A low signal indicates that the MSP53C392 is BUSY and master should not write any command or data to MSP53C392.

  • Page 30: Master Microprocessor Interface Description

    Master Microprocessor Interface Description 3.3 Master Microprocessor Interface Description 3.3.1 Method 1: Polling Three control lines and eight I/O data lines are used in this interface. Data is written to the MSP53C392 device and the status can be read back. Two status bits (BUSY and EOS) can be read back by the master microprocessor to signal that the MSP53C392 is busy and signal the end-of-speech has been reached.
  • Page 31 Master Microprocessor Interface Description Read Operation 1) The master microprocessor sets R/W high to indicate a read operation. 2) The master microprocessor sets STROB to low and reads the state of BUSY and EOS signals. 3) The master microprocessor sets STROB high. If the BUSY signal was high in step 2, the MSP53C392 is not busy and is ready to accept a write operation.
  • Page 32 Master Microprocessor Interface Description If the EOS signal is asserted high during the read operation, the end-of-speech has been reached and a reset operation should be performed prior to sending new commands or speech data. The reset can be done in one of two ways: Pulsing the INIT pin low and then waiting for the MSP53C392 to re-initialize itself or by writing four dummy bytes as described in the following.

  • Page 33: Master Microprocessor Interface Timing

    Master Microprocessor Interface Timing 3.4 Master Microprocessor Interface Timing 3.4.1 Timing Method 1: Polling Data Transfer STROB DATA0 – 5 DATA7/BUSY DATA6/EOS NOTE A: State A: Polling the status by reading the BUSY and EOS State B: Write operation End-of-Speech STROB DATA0 –...

  • Page 34: Msp53C392 Device Initialization

    MSP53C392 Device Initialization 3.5 MSP53C392 Device Initialization For proper operation, the MSP53C392 device should be initialized by sending the following command sequence of bytes: FF,FF,FF,FF,0A,01,00,FF,FF,FF,FF,FF Following this command sequence, the normal command sequence options are available as described in Section 4.2 and onwards. The function of this sequence is to properly initialize the synthesis engine by speaking a short selection of LPC prior to speaking selections using other syn- thesis algorithms.

  • Page 35: Command Sequence

    Chapter 4 MSP53C391 AND MSP53C392 Software Description Topic Page Software Overview ..........

  • Page 36: Features

    MSP53C392 because of the different data bus widths. The command header used for the MSP53C391 is a series of at least 5 nibbles with all bits set high followed by a 0x0, 0xA sequence. The complete command header sequence used for the MSP53C391 is therefore: 0xF, 0xF, 0xF, 0xF, 0xF, 0x0, 0xA.

  • Page 37: Speech Initiation Data

    Because the CELP 5.8 kbps is not a standard CELP rate, it is not recommended for less experienced users. The standard CELP rates (4.2 kbps, 4.8 kbps, 6.2 kbps, 8.6 kbps, and 10.7 kbps) should be used instead. MSP53C391 AND MSP53C392 Software Description...

  • Page 38: Command Sequences

    Command Sequences 4.5 Command Sequences A command sequence transmits controlling commands that instruct the MSP53C391 or MSP53C392 to modify its function in some way. Available commands are: Set the two general-purpose output pins either high or low (MSP53C391 only) Place the MSP53C391 or MSP53C392 into a low-power sleep state...

  • Page 39: Command Codes

    Echo mode 4.5.2 Pin Expansion The OUT1 and OUT2 pins are available on the MSP53C391 for pin expansion. To program these pins to the desired state, transmit one of the command codes as shown in Table 4–5: Table 4–5. Pin Expansion Command Codes...

  • Page 40: Volume Control Commands

    The version information is then available on DATA0, DATA1, and DATA2 on the MSP53C391. It can be read from these pins using the READ protocol de- scribed in Chapter 2. The version number read from the MSP53C391 is 1.

  • Page 41: Generate Test Signal

    INIT pin low. Sending a command code of 0xE96D to the MSP53C391 causes it to enter a special test mode in which the input data latched into the device is echoed out to the OUT2, OUT1, EOS, and IRQ pins.
  • Page 42 Appendix A Appendix A Editing Tools and Data Preparation Topic Page Editing Tools ..........Data Preparation .

  • Page 43: A.1 Editing Tools

    Editing Tools A.1 Editing Tools TI provides several tools to support speech editing. The WINSDS is a tool for LPC editing and the SDS3000 is a tool for MELP editing and CELP and MELP encoding. A.1.1 WINSDS WINSDS (Windows interface speech development station) is a powerful tool to produce high-quality LPC (linear predictive coding) speech and sound.

  • Page 44: A.2 Data Preparation

    TI or generated from a TI tool (SDS3000 for MELP or CELP and WINSDS for LPC). The data preparation for different algorithms for MSP53C391 and MSP53C392 is discussed in the following paragraphs. A.2.1 LPC LPC is processed and editing using the WINSDS station. Please refer to the WINSDS User’s Guide (literature number: SPSU010) for details.

  • Page 45: A.2.3 Pcm

    SHAPES use the Hiss shape to reduce the noise. 6) It is necessary to append a termination code to the end of the PCM data to signal the end of the file to the MSP53C391 or MSP53C392. The proper end code is the two byte sequence: 0x7F, 0x80.

  • Page 46: A.2.4 Fm

    MIDI files, which the MD2FM program pro- cesses. 1) The MSP53C391 and MSP53C392 support a maximum of two channels of FM synthesis music. The MD2FM can convert only one track or channel at a time. Two passes through the program are required to convert the two channels into two separate output file.
  • Page 47 Appendix B Appendix A FM Synthesis Topic Page FM Synthesis Overview ........FM Synthesis Format and Commands .

  • Page 48: B.1 Fm Synthesis Overview

    The MSP53C391 and MSP53C392 can generate two channels of FM synthe- sis. This means that a maximum of two notes can be played simultaneously.

  • Page 49: B.2.1 Musical Notes

    FM Synthesis Format and Commands B.2.1 Musical Notes Musical notes are defined as: BYTE Notevalue, TimeValue,Duration,Velocity Where: Notevalue defines the pitch of the musical note. The valid values for Note- value are defined in Appendix C. In general, they range from a minimum of C1 to a maximum of C6.

  • Page 50: B.2.3 Tempo Synchronization

    FM Synthesis Format and Commands B.2.3 Tempo Synchronization The tempo of the two channels needs to be the same. If it changes, it needs to change at the same point in the music for both channels. This is accom- plished by placing the tempo change information in the channel one data stream (using the TEMPO command) and by placing a synchronizing place- holder in the channel 2 data stream to ensure that the tempo change happens at the same point in the music for both channels.

  • Page 51: B.2.5 Transposition

    FM Synthesis Format and Commands BYTE –9,–8 ;CarAmp=107, FmAmp=119 BYTE –8,–7 ;CarAmp=99, FmAmp=112 BYTE –7,–6 ;CarAmp=92, FmAmp=106 BYTE –6,–5 ;CarAmp=86, FmAmp=101 BYTE –5,–4 ;CarAmp=81, FmAmp=97 BYTE –81,–3 ;CarAmp=0, FmAmp=94 B.2.5 Transposition Two commands are available for transposing the music (i.e., uniformly shifting the notes to higher or lower frequencies).

  • Page 52: B.2.8 Modulation Index Adjustment

    FM Synthesis Format and Commands FaderInc allows a gradual transition to the new volume. It is a signed two- byte value that specifies the incremental amount to change the volume during each interval. For example: BYTE FADER,f100p ;Set volume to 100 DATA NOFADER ;Change is abrupt...

  • Page 53: Command Summary

    FM Synthesis Format and Commands B.2.10 Command Summary Table B–1 summarizes the several valid commands. Table B–1. Command Summary Command and Format Description Music Notes: Note: Is the music note that can range form C0 to C6 Format: TimeValue: Total length of the note. n4 is 1/4 note. Note,TimeValue,Duration,Velocity Example: C1, n4, n4, 127...
  • Page 54 FM Synthesis Format and Commands Table B–1. Command Summary (Continued) Command and Format Description Detune: DETUNE: Allows detuning channel 2 Format: DETUNE,NUM NUM: A signed offset to the channel 2’s frequency Example: value. DETUNE,4 (add 4 to channel 2’s Sine table index) Fade control: FADER: Fader command Format: FADER,InitialFaderValue,FaderInc...

  • Page 55: B.3 Fm Synthesis Data Structure

    FM Synthesis Data Structure B.3 FM Synthesis Data Structure As there are two channels data that are passed to the MSP53C391 or MSP53C392 through a single data path; the note information needs to be in- terleaved to provide the correct sequencing.
  • Page 56 FM Synthesis Data Structure byte –25,–19 byte 000,–06 byte 000,–25 byte –38,–32 byte –10,–23 BYTE C4,12,12,127 ; load first note of channel 1 * define Channel 2 and loading the first note * Channel 2 BYTE TEMPOSYNC ; sync the Tempo of channel 2 with 1 BYTE ATRNS,0 ;...
  • Page 57 FM Synthesis Data Structure BYTE G4,12,12,127 * Channel 2 BYTE A4,12,12,64 * Channel 1 BYTE E4,12,12,127 * Channel 2 BYTE A4,12,12,64 * Channel 1 BYTE C5,12,12,127 * Channel 2 BYTE REST,48,2,OFF * Channel 1 BYTE E5,12,12,127 ; the duration of channel 2 is still larger than 1 BYTE C5,12,12,127 ;...

  • Page 58: Fm Conversion Process

    Alternatively, software utilities are available for converting a song from MIDI (musical instrument digi- tal interface) formatted files to a format accepted by MSP53C391 AND MSP53C392. There are two utilities, MD2FM.exe and FM2MERGE.exe, for the conversion.

  • Page 59: B.4.1 Md2Fm Software

    Data Preparation of FM Synthesis B.4.1 MD2FM Software MD2FM converts a MIDI format file to a FM data accepted by MSP50C391/2. With this routine, users can compose or translate music base on the MIDI for- mat. This routine runs under the DOS environment and the syntax is as fol- lows: md2fm songt1 songt1_1 –c1 –t1 input : songt1.mid (MIDI format)

  • Page 60: B.4.2 Fm2Merge Software

    FM2MERGE is a routine run on the DOS environment. The function of the pro- gram is to merge two FM data stream into one data file for the MSP53C391 and MSP53C392 slave synthesis. The two data streams are combined ac- cording to the accumulative duration of the notes on channel 1 and 2.

  • Page 61: B.4.3 Assembler

    Data Preparation of FM Synthesis byte PatchMT6i ;Use instrument Metallic tone 6i *PatchMT6i: Metallic tone 6i, hard metallic sound 1 byte LOADTIMBRE byte byte byte 28*4 byte 127,120 byte –24,7 byte –12,–20 byte –6,–10 byte –3,–5 byte –2,–3 byte –1,–1 byte –12,–6 byte...

  • Page 62: Listing Of Fmequm2.Inc

    Appendix C Appendix A Listing of FMequM2.inc Topic Page Listing of FMequM2.inc ........
  • Page 63 Listing of FMequM2.inc C.1 Listing of FMequM2.inc FMequM2.inc contains all the FM command and note definitions that are used for preparation of FM data. The listings are shown in the following: FMEQU.INC Version 2.08 RAM Definitions Constant Definitions DC,BA98:7654,3210 ––,––––:––––,–––– BIT0 #0001 ;00,0000:0000,0001 BIT1...
  • Page 64 Listing of FMequM2.inc (EXTSG ON) and Update Fader. When calculating Loudness, use Fader / 16 * Current Signal. My standard fader values f100p f94p f87p f75p f62p f50p f37p f25p f18p f12p ;use for REST event, set velocity = 0 NOFADER ;Fader Increment = 0.
  • Page 65 Listing of FMequM2.inc...
  • Page 66 Listing of FMequM2.inc REST Lookup values for Instrument Sound tables PatchFLT1 128+0 ;FM Flute tone 1 PatchBRS1 128+1 ;FM Brass tone 1, Medium slow attack PatchBRS2 128+2 ;FM Brass tone 2, Fast attack PatchBRS3 128+3 ;FM Brass tone 3, Slow attack PatchTRM1 128+4 ;FM Brass tone Trombone 1, Slow attack...
  • Page 67 Listing of FMequM2.inc PatchMT2c 128+13 ;FM Metallic tone 2c PatchMT3a 128+14 ;FM Metallic tone 3a PatchMT3b 128+15 ;FM Metallic tone 3b PatchMT3c 128+16 ;FM Metallic tone 3c PatchMT4a 128+17 ;FM Metallic tone 4a PatchMT4b 128+18 ;FM Metallic tone 4b PatchMT4c 128+19 ;FM Metallic tone 4c PatchMT5a...
  • Page 68 Listing of FMequM2.inc ATRNS ;Control code for ABSOLUTE Transpose TEMPO ;Control code for Tempo FADER ;Control code for Set Fader MIX0 ;Control code for Modix (Modulation Index) MIX1 ;isolate bits 0–3 for table lookup MIX2 MIX3 MIX4 MIX5 MIX6 MIX7 MIX8 MIX9 MIX10...
  • Page 69 Listing of FMequM2.inc BPM122 122.070313 0.491520 98.304000 BPM128 128.173828 0.468114 93.622857 BPM134 134.277344 0.446836 89.367273 BPM140 140.380859 0.427409 85.481739 BPM146 146.484375 0.409600 81.920000 BPM153 152.587891 0.393216 78.643200 BPM159 158.691406 0.378092 75.618462 BPM165 164.794922 0.364089 72.817778 BPM171 170.898438 0.351086 70.217143 BPM177 177.001953 0.338979 67.795862...
  • Page 70 Listing of FMequM2.inc ENVS7 ;make Envelope length Shorter by 7 ENVS8 ;make Envelope length Shorter by 8 ENVS10 ;make Envelope length Shorter by 10 ENVS12 ;make Envelope length Shorter by 12 ENVS14 ;make Envelope length Shorter by 14 ENVS16 ;make Envelope length Shorter by 16 ENVS18 ;make Envelope length Shorter by 18 ENVS20...
  • Page 71 Listing of FMequM2.inc X0707 ;Multiply * 0.707 Xd4th ;Multiply * 0.750 (down a Fourth) ;Multiply * 1 X1414 ;Multiply * 1.414 Xu5th ;Multiply * 1.500 (up a Fifth) ;Multiply * 2 ;Multiply * 3 Carrier & Modulator frequency multipliers. X0_33 ;Multiply * 0.3333 X0_5 ;Multiply * 0.5...
  • Page 72 ......... . . MSP53C391 Timing Waveforms .

  • Page 73: D.1 General Constraints

    Once the MSP53C391 or MSP53C392 has been polled and determined to be ready to accept new data, the data should be loaded quickly until the buffer is again full.

  • Page 74: D.2 Msp53C391 Timing Waveforms

    MSP53C391 which might affect the quality of the speech. At the same time, polling the slave less frequently would lengthen...
  • Page 75 MSP53C391 Timing Waveforms In both cases, it is advisable to follow the timing window for the width of the strobe pulse and also to provide speech data to the slave in response to the interrupt as soon as possible. It is also advisable to keep any interrupt service routine small so that a new Interrupt service request does not occur while the master is processing the previous request.

  • Page 76: D.3 Msp53C392 Timing Waveforms

    20 – 32 µs 77 – 156 µs If the slave is busy Read Strobe Read Strobe Read Strobe 3 – 10 µs 3 – 10 µs 3 – 10 µs 19 – 606 µs 19 – 606 µs MSP53C391/392 Timing Considerations...
  • Page 77 MSP53C392 Timing Waveforms In both cases, it is advisable to follow the timing window for the width of the strobe pulse and also to provide speech data to the slave in response to the interrupt as soon as possible. It is advisable to follow the typical timing window as much as possible for any synthesis algorithm;...

  • Page 78: Listing Of Fm2Intr1.Inc

    Appendix E Appendix A Listing of FM2INTR1.inc Topic Page Listing of FM2INTR1.inc ........
  • Page 79 Listing of FM2INTR1.inc E.1 Listing of FM2INTR1.inc FM2INTR1.inc contains ?????? The listings are shown in the following: Patch tables define each instrument sound. * PatchFLT1: Flute tone 1 byte LOADTIMBRE byte ;Carrier Fc = 2Fo byte ;Modulator Fm = 2Fo byte 16*4 ;Modulation Index Scaler...
  • Page 80 Listing of FM2INTR1.inc * PatchBRS3: Brass tone 3, Slow attack byte LOADTIMBRE byte ;Carrier Fc = Fo byte ;Modulator Fm = Fo byte 32*4 ;Modulation Index Scaler byte 127,69 ;CarAmp, FmAmp Initial Values byte –22,58 CarInc, FmInc – byte –18,–50 CarInc, FmInc –...
  • Page 81 Listing of FM2INTR1.inc byte 124,46 CarInc, FmInc – byte –10,80 CarInc, FmInc – byte –9,–8 CarInc, FmInc 16 – byte –8,–7 CarInc, FmInc 24 – byte –7,–6 CarInc, FmInc 32 – byte –6,–5 CarInc, FmInc 40 – byte –5,–4 CarInc, FmInc 48 –...
  • Page 82 Listing of FM2INTR1.inc byte –16,–1 CarInc, FmInc 48 – byte –15,0 CarInc, FmInc 56 – * PatchMT1c: Metallic tone 1c byte LOADTIMBRE byte ;Carrier Fc = 2Fo byte X0707 ;Modulator Fm = 0.707Fo byte 32*4 ;Modulation Index Scaler byte 127,127 ;CarAmp, FmAmp Initial Values byte...
  • Page 83 Listing of FM2INTR1.inc byte 32*4 ;Modulation Index Scaler byte 127,127 ;CarAmp, FmAmp Initial Values byte –40,–20 CarInc, FmInc – byte –27,–8 CarInc, FmInc – byte –19,–8 CarInc, FmInc 16 – byte –7,–8 CarInc, FmInc 24 – byte –6,–8 CarInc, FmInc 32 –...
  • Page 84 Listing of FM2INTR1.inc byte –6,–8 CarInc, FmInc 32 – byte –5,–19 CarInc, FmInc 40 – byte –4,–19 CarInc, FmInc 48 – byte –19,0 CarInc, FmInc 56 – * PatchMT4a: Metallic tone 4a byte LOADTIMBRE byte ;Carrier Fc = 2Fo byte Xu5th ;Modulator Fm = 1.500Fo byte...
  • Page 85 Listing of FM2INTR1.inc byte Xd4th ;Carrier Fc = 0.75Fo byte ;Modulator Fm = 2Fo byte 32*4 ;Modulation Index Scaler byte 127,127 ;CarAmp, FmAmp Initial Values byte –40,–20 CarInc, FmInc – byte –27,–8 CarInc, FmInc – byte –19,–8 CarInc, FmInc 16 – byte –7,–8 CarInc, FmInc...
  • Page 86 Listing of FM2INTR1.inc byte –6,–6 CarInc, FmInc 16 – byte –4,–4 CarInc, FmInc 24 – byte –2,–2 CarInc, FmInc 32 – byte –1,–1 CarInc, FmInc 40 – byte –10,–5 CarInc, FmInc 48 – byte –78,–16 CarInc, FmInc 56 – * PatchMT6b: Metallic tone 6b, good BASS sound 2 byte LOADTIMBRE byte...
  • Page 87 Listing of FM2INTR1.inc * PatchMT6e: Metallic tone 6e byte LOADTIMBRE byte ;Carrier Fc = Fo byte ;Modulator Fm = 2Fo byte 32*4 ;Modulation Index Scaler byte 127,120 ;CarAmp, FmAmp Initial Values byte –24,7 CarInc, FmInc – byte –12,–20 CarInc, FmInc –...
  • Page 88 Listing of FM2INTR1.inc byte –24,–20 CarInc, FmInc – byte –18,–15 CarInc, FmInc – byte –6,–12 CarInc, FmInc 16 – byte –3,–10 CarInc, FmInc 24 – byte –2,–8 CarInc, FmInc 32 – byte –1,–5 CarInc, FmInc 40 – byte –18,–3 CarInc, FmInc 48 –...
  • Page 89 Listing of FM2INTR1.inc byte –10,–5 CarInc, FmInc 48 – byte –78,–16 CarInc, FmInc 56 – * PatchMT6l: Metallic tone 6l, plucked string 1 byte LOADTIMBRE byte ;Carrier Fc = 2Fo byte ;Modulator Fm = Fo byte 28*4 ;Modulation Index Scaler byte 127,127 ;CarAmp, FmAmp...
  • Page 90 Listing of FM2INTR1.inc byte 28*4 ;Modulation Index Scaler byte 127,127 ;CarAmp, FmAmp Initial Values byte –24,–20 CarInc, FmInc – byte –18,–15 CarInc, FmInc – byte –6,–12 CarInc, FmInc 16 – byte –3,–10 CarInc, FmInc 24 – byte –2,–8 CarInc, FmInc 32 –...
  • Page 91 Listing of FM2INTR1.inc byte –9,–8 CarInc, FmInc 32 – byte –7,–6 CarInc, FmInc 40 – byte –8,–5 CarInc, FmInc 48 – byte –28,–3 CarInc, FmInc 56 – * PatchCHM3: Chimes tone 3 byte LOADTIMBRE byte ;Carrier Fc = Fo byte X1414 ;Modulator Fm = 1.414Fo byte...
  • Page 92 Listing of FM2INTR1.inc * PatchEP_1: Electric Piano tone 1 byte LOADTIMBRE byte X2 ;Carrier Fc = 1*Fo byte X10 ;Modulator Fm = 10*Fo byte 30*4 ;MIX Scaler (higher#=more timbre chg. per progressive Velocity & MIXn ) byte 127,127 ;CarAmp, FmAmp Initial Values byte –13,–20...
  • Page 93 Listing of FM2INTR1.inc byte X5 ;Modulator Fm = 5*Fo byte 30*4 ;MIX Scaler (higher#=more timbre chg. per progressive Velocity & MIXn ) byte 126,108 ;CarAmp, FmAmp Initial Values byte –13,006 CarInc, FmInc – byte –25,013 CarInc, FmInc – byte –13,–19 CarInc, FmInc 16 –...
  • Page 94 Listing of FM2INTR1.inc byte 127,127 CarAmp, FmInc Initial Values byte –25,–25 CarInc, FmInc – byte –25,–25 CarInc, FmInc – byte –25,–13 CarInc, FmInc 16 – byte –25,–13 CarInc, FmInc 24 – byte –13,–25 CarInc, FmInc 32 – byte –06,–25 CarInc, FmInc 40 –...
  • Page 95 Listing of FM2INTR1.inc byte –13,–04 CarInc, FmInc 16 – byte –13,–04 CarInc, FmInc 24 – byte –13,–04 CarInc, FmInc 32 – byte 000,–25 CarInc, FmInc 40 – byte 000,–25 CarInc, FmInc 48 – byte –89,–29 CarInc, FmInc 56 – * PatchOBO1: Oboe 1 byte LOADTIMBRE byte X3...
  • Page 96 Listing of FM2INTR1.inc byte 000,000 CarInc, FmInc 40 – byte –64,000 CarInc, FmInc 48 – byte –64,–108 CarInc, FmInc 56 – * PatchTBA1: Tuba 1 byte LOADTIMBRE byte X0_5 ;Carrier Fc = 0.5*Fo byte X0_5 ;Modulator Fm = 0.5*Fo byte 18*4 ;MIX Scaler (higher#=more timbre chg.
  • Page 97 Listing of FM2INTR1.inc * PatchVLN1: Violin 1 byte LOADTIMBRE byte X2 ;Carrier Fc = 2*Fo byte X1 ;Modulator Fm = 1*Fo byte 40*4 ;MIX Scaler (higher#=more timbre chg. per progressive Velocity & MIXn ) byte 013,114 CarAmp, FmInc Initial Values byte 038,000 CarInc, FmInc...

  • Page 98: Msp53C391 And Msp53C392 Data Sheet

    Appendix F Appendix A MSP53C391 and MSP53C392 Data Sheet Topic Page MSP53C391, MSP53C392 ........

  • Page 99: Msp53C31 And Msp53C32 Data Sheet

    MSP53C31 and MSP53C32 Data Sheet F.1 MSP53C31 and MSP53C32 Data Sheet...
  • Page 100 8-bit data bus Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 1999, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date.
  • Page 101 MSP53C391, MSP53C392 SLAVE SPEECH SYNTHESIZERS SPSS024 – NOVEMBER 1999 † absolute maximum ratings over operating free-air temperature range Supply voltage range, V (see Note 1) ..........
  • Page 102 MSP53C391, MSP53C392 SLAVE SPEECH SYNTHESIZERS SPSS024 – NOVEMBER 1999 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS UNIT V DD = 3.5 V V T+ Positive going threshold voltage (INIT)
  • Page 103 MSP53C391, MSP53C392 SLAVE SPEECH SYNTHESIZERS SPSS024 – NOVEMBER 1999 switching characteristics PARAMETER TEST CONDITIONS UNIT Rise time, DATA0 – DATA7, DAC V DD = 3.3 V, C L = 100 pF, 10% to 90% Fall time, DATA0– DATA7, DAC V DD = 3.3 V,...
  • Page 104 MSP53C391, MSP53C392 SLAVE SPEECH SYNTHESIZERS SPSS024 – NOVEMBER 1999 PARAMETER MEASUREMENT INFORMATION t su1(R/W) t h1(R/W) STROB t su(d) t h(d) DATA Data Valid Figure 2. Write Timing Diagram (Slave Mode) t su2(R/W) t h2(R/W) STROB t dis DATA Data Valid Figure 3.
  • Page 105 MSP53C391, MSP53C392 SLAVE SPEECH SYNTHESIZERS SPSS024 – NOVEMBER 1999 MECHANICAL DATA N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 16 PIN SHOWN PINS ** 0.775 0.775 0.920 0.975 A MAX (19,69) (19,69) (23.37) (24,77) 0.745 0.745 0.850 0.940 A MIN (18,92) (18,92) (21.59) (23,88) 0.260 (6,60)
  • Page 106 B-12 sleep state, 4-6 data structure, B-9 volume control, 4-6 detune, B-5 command summary, FM synthesis, B-7 end of song, B-6 commands, FM synthesis, B-2 FM2MERGE software, B-14 comparison, MSP53C391 with MSP53C392, 1-3 format and commands, B-2 Index-1...
  • Page 107 Index FM synthesis interrupt 2 load timbre command, B-4 MSP53C391, 2-8 MD2FM software, B-13 modulation index adjustment, B-6 musical notes, B-3 tempo control, B-3 load timbre command, FM synthesis, B-4 tempo synchronization, B-4 low power sleep state, 4-6 transposition, B-5...
  • Page 108 FM synthesis, B-6 command header, 4-2 command sequence, 4-2 MSP50x3x mixed-signal processor, 1-2 command sequences, 4-4 MSP53C391 comparison with MSP53C391, 1-3 CELP data preparation, A-3 D/A information, 1-6 command codes, 4-5 data preparation, A-3 command header, 4-2 data sheet, F-2–F-8...
  • Page 109 2-10–2-13, 3-7–3-10 resampling, A-3 method 1: polling, 2-10, 3-7 method 2: interrupt 1, 2-11 method 3: interrupt 2, 2-12 MSP53C391, D-2, D-3 SDS3000, A-2 MSP53C392, D-2, D-5 signal description transposition, FM synthesis, B-5 MSP53C391, 2-3 two-pin push-pull option, 1-6...

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