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MSM6679A-110

Voice Recognition Processor

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

Contents

Description .......................................................................................................................................... 1

Features................................................................................................................................................ 1

Functional and I/O Diagrams .......................................................................................................... 2

Pin Descriptions ................................................................................................................................. 8

Electrical Specifications ..................................................................................................................... 12

Absolute Maximum Ratings ............................................................................................ 12

Operating Conditions ....................................................................................................... 12

DC Characteristics (VDD = 4.5 to 5.5 V, Ta = -40 to 80˚C) .......................................... 13

AC Characteristics ............................................................................................................ 14

Timing Diagrams .............................................................................................................. 15

Functional Description ...................................................................................................................... 17

Voice Recognition ............................................................................................................. 17

SI Recognition ................................................................................................... 17

SD Recognition ................................................................................................. 20

Name Tag Recording ........................................................................................................ 20

Audio Input Interface ....................................................................................................... 21

Audio Output Interface .................................................................................................... 21

Memory Interface .............................................................................................................. 21

External Voice Synthesis Control ................................................................................... 24

Serial Interface ................................................................................................................... 25

MSM6679A-110 Slave-Mode API .................................................................................................... 26

Command Summary ........................................................................................................ 27

Command Descriptions ................................................................................................... 31

Asynchronous Serial Protocol Example ........................................................................ 44

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

¡ Semiconductor

MSM6679A-110

SI/SD Voice Recognizer, Recorder/Player, and Speech Synthesizer

GENERAL DESCRIPTION

The MSM6679A-110 Voice Recognition Processor (VRP) is a slave-mode device that performs five func-tions: speaker-independent (SI) voice recognition, speaker-dependent (SD) voice recognition, solid-state sound recording, sound playback, and speech synthesis. The highly integrated device also provides an on-chip memory controller, Flash memory interface, analog data conversion, Oki speech synthesizer interface, and pulse width modulation (PWM) sound output. For SI recognition, the MSM6679A-110 contains a vocabulary template in external memory. Pretrained SI vocabularies eliminate the need for laborious training, as usually required by SD products. The memory requirements are dependent on the size of the vocabulary. The MSM6679A110 can tolerate background noise, while providing high recognition accuracy. In its designated operating environment, the device achieves a typical recognition accuracy of >95% (using an Oki-defined test procedure). For SD recognition, the MSM6679A-110 stores SD vocabulary templates, as defined by the user, in external SRAM. The MSM6679A-110 can create SD vocabularies of up to 61 words each, with each word using approximately 50 bytes. In addition to providing voice recognition capabilities, the MSM6679A-110 integrates a solidstate recorder/player, speech synthesis functions, and a tone generator. ADPCM recording/ playback provides high quality sound and efficient memory utilization. The MSM6679A-110 can respond to spoken com-mands, verbally or with tones, via an on-chip speech synthesizer and tone generator. For larger speech-synthesis requirements, the MSM6679A-110 also provides a glueless MSM665x control interface for off-chip speech synthesis. The MSM6679A-110 can interface to any application or personal computer via a serial interface through an open, device-independent serial mode API (SMAPI). To accelerate code development, Oki supplies an evaluation kit, and assembly and C language programs for this product.

FEATURES

• SI recognition

- Up to 20 - 25 words in each vocabulary

- Multiple vocabulary support

• SD recognition

- Up to 61 words in each vocabulary

- Multiple vocabulary support

• Speech synthesis

- Up to 2.3-sec internal and 27.6-sec external speech synthesis on-chip; sample looping and concatenation allows even longer phrases.

- On-chip controller for MSM665x speech synthesizer

- Standard beep tone outputs

- Pulse code modualation (PCM) and

adaptive differential pulse code modualation (ADPCM) voice or soundeffect output

• Speech capture and playback

- 28-kbps ADPCM speech compression

• Serial ASCII command interface

• 6944-Hz audio input sample rate for record and playback

• 10-kHz sample rate for voice recognition

• 200-msec recognition latency

• Flexible memory mapping for EPROM, FLASH, and SRAM

• 32-MHz operation

• Packages: 84-pin PLCC (QFJ84-P-S115) or 100-pin TQFP (TQFP100-P-1414-0.50-K)

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

FUNCTIONAL AND I/O DIAGRAMS

Analog

Input

A/D Interface

Serial-Mode

MSM665x Interface

PWM Output

Serial Interface

IC Reset and Oscillator Inputs

Recognition and

Synthesis Engine

Vocabulary

Memory

Algorithm

Memory

External Memory Control

System

Controller

Figure 1. MSM6679A-110 Block Diagram

ADC0 ~ ADC9

VREF

NAR BUSY

SI SD

STROBE RESOUT

VOICEOUT1

RXD1 TXD1

RES

OSC0 OSC1

AD0 ~ AD7

A8 ~ A15

ROMRD

WRRAM

RDRAM

LOADPGM

ROMPAGE0 ROMPAGE1 RAMPAGE0 RAMPAGE1

A15FLIP

ALE

Serial

Interface

PWM

Output

External

Speech

Synthesis

Control

Memory Interface

Figure 2. MSM6679A-110 Logic Symbol

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

N/C

RAMPAGE1

RAMPAGE0

LOADPGM

N/C

GNDSDSI

BUSY

N/C

ROMPAGE1

ROMPAGE0

STROBE

A15FLIP

N/C

747372717069686766656463626160595857565554

N/C N/C N/C N/C N/C

N/C+

RES

ADC0 ADC1 ADC2 ADC3 ADC4 ADC5 ADC6 ADC7 ADC8 ADC9

AGND

75 76 77 78 79 80 81 82 83 84

10 11

N/C

N/C–

A15

A14

A13

A12

A11

A10

44 1 2 3 4 5 6 7 8 9

AD7

AD6

AD5

AD4

AD3

AD2

AD1

AD0

VOICEOUT1

121314151617181920212223242526272829303132

N/C+

VREF

N/C+

N/C

TXD1

RXD1

GND

OSC0

OSC1

ALE

ROMRD

RDRAM

WRRAM

N/C–

RESOUT

NAR

N/C

Figure 3. MSM6679A-110 84-Pin PLCC Pinout

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

MSM6679A-110 Alphabetic Pin List

AD0

84-pin/

100-pin

34/28

Name

AD1 35/29 AD2 36/30 AD3 37/31 AD4 38/32 AD5 39/33 AD6 40/34 AD7 41/35

A8 43/39 A9 44/40

Name

84-pin/

100-pin

A10 45/41 A11 46/42 A12 47/43 A13 48/44 A14 49/45 A15 50/46

A15FLIP 56/54

ADC0 1/89 ADC1 2/90 ADC2 3/91

Name

84-pin/

100-pin

ADC3 4/92 ADC4 5/93 ADC5 6/94 ADC6 7/95 ADC7 8/96 ADC8 9/97 ADC9 10/98

AGND 11/99

ALE 24/16

AVDD 84/87

Name

84-pin/

100-pin

BUSY 61/60

13,14,80/3,4,82

N/C+

28,51/20,47

N/C–

EA 82/84 ES 30/22

GND

21,64/12,63

LOADPGM

66/66

Name

RAMPAGE0 RAMPAGE1

RDRAM 27/19

RESOUT 29/21

ROMPAGE0 ROMPAGE1

84-pin/

100-pin

67/67 SI 62/61 68/68

RES 81/83

58/56 59/57

NAR 31/23 ROMRD 25/17 OSC0 22/13 RXD1 19/9 OSC1 23/15 SD 63/62

Name

84-pin/

100-pin

STROBE 57/55

TXD1 20/10 VREF 12/2

VOICEOUT1

33/27

WRRAM 26/18

42,83/37,85

VDD

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

Figure 4. MSM6679A-110 84-Pin Package Mechanical Drawing

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

N/C

VREF

N/C+ N/C+

N/C N/C N/C

N/C RXD1 TXD1

N/C

GND

OSC0

N/C OSC1

ALE

ROMRD

WRRAM

RDRAM

N/C–

RESOUT

NAR

N/C

AVDDN/C

ADC0

ADC1

ADC2

ADC3

ADC4

ADC5

ADC6

ADC7

ADC8

ADC9

AGND

N/C

100

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22

23 24 25

N/C+

RES

N/C 81

N/C 80

N/C 79

N/C 78

N/C 77

N/C 76

N/C

N/C RAMPAGE1

68 67

RAMPAGE0

LOADPGM

N/C

N/C GND

BUSY

60 59

N/C N/C

ROMPAGE1

ROMPAGE0

STROBE

A15FLIP

54 53

N/C N/C

N/C

VOICEOUT1

AD0

AD1

AD2

AD3

AD4

AD5

AD6

AD7

N/C

A10

A11

A12

A13

A14

A15

N/C–

N/C

Figure 5. MSM6679A-110 100-Pin TQFP Pinout

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

Figure 6. MSM6679A-110 100-Pin Package Mechanical Drawing

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

PIN DESCRIPTIONS

Pin #

84-pin/

100-pin

10/98 ADC9

11/99 AGND Analog ground

20/10 TXD1 Output Serial Port Transmit. This is the transmit data line for serial port.

21/12 GND Ground Ground.

22/13 OSC0 Input

23/15 OSC1 Output

24/16 ALE Output

Pin Name

-/1 1/89 ADC0 2/90 ADC1 3/91 ADC2 4/92 ADC3 5/93 ADC4 6/94 ADC5 7/95 ADC6 8/96 ADC7 9/97 ADC8

12/2 VREF

13/3 N/C+ 14/4 N/C+ 15/5 N/C 16/6 N/C 17/7 N/C 18/8 N/C 19/9 RXD1 Input Serial Port Receive. This is the receive data line for serial port.

-/11 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

-/14 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

N/C

Signal Type Description

(not connected) Reserved. This pin is reserved for future use and should be left open.

Analog Input. These ten inputs are tied together and serve as the

Analog input

Reference voltage

Input

(do not connected) Reserved. These pins are reserved for future use and must be left open.

analog input. Signal conditioning, via a bandpass filter and gain circuit, is required before this input.

Analog Ground. This pin provides an analog ground point, allowing independent grounding of the analog and digital circuitry. Separate grounds reduce the impact of digital switching noise on analog sampling accuracy. Analog Reference Voltage. The MSM6679A-110's on-chip A/D converter uses this analog reference voltage when converting an analog signal into digital samples Reserved. These pins are reserved for future use and must be tied to VDD.

Oscillator 0/External Clock. When the MSM6679A-110 uses a crystal oscillator, this input is the oscillator input pin. The pin is then connected to one side of a crystal and load capacitor. When used with an external clock, the external clock is applied to this input.

Oscillator 1. When the MSM6679A-110 uses a crystal oscillator, this output is the oscillator output pin. The pin is then connected to one side of a crystal and load capacitor. When used with an external clock, this output is left unconnected. Memory Address Latch Enable. An external memory latch is controlled by this signal, the address latch enable output.

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

Pin #

84-pin/

100-pin

25/17

26/18 WRRAM Output

27/19 RDRAM Output

28/20 N/C– Input Reserved. This pin is reserved for future use and must be tied to GND.

29/21 RESOUT Output

30/22 ES Output

31/23 NAR Input

32/24 N/C (do not connect)

-/25,26 N/C (not connected)

33/27 VOICEOUT1 Output

34/28 AD0 35/29 AD1 36/30 AD2 37/31 AD3 38/32 AD4 39/33 AD5 40/34 AD6 41/35 AD7

42/37 VDD Digital Power Power.

43/39 A8 44/40 A9 45/41 A10 46/42 A11 47/43 A12 48/44 A13

Pin Name

ROMRD

-/36 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

-/38 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

Signal Type Description

ROM Read. This is a strobe signal for direct connection to an external

Output

Bidirectional I/O

Outputs Memory Address Bus. These are the upper eight address pins.

ROM's READ input. When asserted LOW, this signal indicates that the MSM6679A-110 is ready to read data from the ROM. RAM Write. This is a strobe signal for direct connection to an external RAM's WR input. When asserted LOW, this signal indicates that the MSM6679A-110 is ready to write data to RAM. RAM Read. This is a strobe signal for direct connection to an external RAM's RD input. When asserted LOW, this signal indicates that the MSM6679A-110 is ready to read data from RAM.

MSM665x Reset. This pin provides a reset signal for an external speech synthesis engine. Flash Bank Control (Extended Segments). This is the control signal for flash memory banking. MSM665x Next Address Request. This pin signals to the MSM6679A-110 that the external speech synthesis engine is ready for another command. Reserved. These pins are reserved for future use and must be left open. Reserved. These pins are reserved for future use and should be left open. Voice Out. This pin is the PWM output for speech synthesis, voice sample playback, and voice prompts. An external integrator must be used to convert this to an analog signal.

Memory Address/Data Bus. These are multiplexed address/data lines for the eight data bits and the lower eight address bits (the upper eight address bits are not multiplexed).

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

Pin #

84-pin/

100-pin

49/45 50/46 A15 51/47 N/C– Input Reserved. This pin is reserved for future use and must be tied to GND. 52/48 N/C 53/49 N/C

-/50,51 N/C (not connected) 54/52 N/C 55/53 N/C

56/54 A15FLIP Output

57/55 STROBE Output

58/56 ROMPAGE0 59/57 ROMPAGE1 60/58 N/C (do not connect) Reserved. This pin is reserved for future use and must be left open.

61/60 BUSY Input

62/61 SI Output

63/62 SD Output

64/63 GND Digital Ground Ground.

65/65 N/C (do not connect) Reserved. This pin is reserved for future use and must be left open.

66/66 LOADPGM Output

67/67 RAMPAGE0 68/68 RAMPAGE1 69/69 N/C 70/70 N/C 71/71 N/C (do not connect) 72/72 N/C 73/73 N/C 74/74 N/C

-/75,76 N/C (not connected)

Pin Name

A14

-/59 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

-/64 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

Signal Type Description

Outputs Memory Address Bus. These are the upper eight address pins.

(do not connect)

Outputs

Output

Reserved. These pins are reserved for future use and must be left open.

Reserved. These pins are reserved for future use and should be left open.

Reserved. These pins are reserved for future use and must be left open.

Memory Address A15 Flip. This signal inverts the A15 address signal for 32-Kbyte bank switching on the local memory bus. MSM665x Strobe. This output provides the LOAD signal for an external speech synthesizer. ROM Page Select. These signals select one of four 64-Kbyte ROM pages.

MSM665x Busy. When using an external MSM665x device, this pin monitors the MSM665x BUSY signal and connects directly to the MSM665x BUSY signal output. MSM665x Serial Clock. This MSM6679A-110 output connects to the MSM665x SI input. The SI pin is the MSM665x serial clock input pin. MSM665x Serial Data. This MSM6679A-110 output connects to the MSM665x SD input. The SD pin is the MSM665x serial data input pin.

Load Program. This signal allows the MSM6679A-110 to write data to program memory. When asserted low, this signal should set the program memory in write mode. RAM Page Select. These signals support selection of one out of four RAM pages. Each page is 64kbytes in size.

Reserved. These pins are reserved for future use and must be left open.

Reserved. These pins are reserved for future use and should be left open.

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

Pin #

84-pin/

100-pin

75/77 76/78 N/C 77/79 N/C (do not connect) 78/80 N/C 79/81 N/C 80/82 N/C+ Input Reserved. This pin is reserved for future use and must be tied to VDD.

81/83 RES Input

82/84 EA Input

83/85 VDD

84/87 AVDD

-/100 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

Pin Name

N/C

-/86 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

-/88 N/C (not connected) Reserved. This pin is reserved for future use and should be left open.

Signal Type Description

Reserved. These pins are reserved for future use and must be left open.

MSM6679A-110 Reset. External logic should assert this power-on reset signal LOW when power is applied to the MSM6679A-110. External ROM Address Select. This control signal enables external ROM execution. This signal is usually connected to ROMPAGE1 and a pullup resistor.

Positive digital supply

Analog power supply

Power.

Analog Power.

MSM6679A-110 Voice Recognition Processor ¡ Semiconductor

ELECTRICAL SPECIFICATIONS

Absolute Maximum Ratings

Digital power supply voltage Input voltage Output voltage Analog power voltage Analog reference voltage Analog input voltage

Power dissipation

Storage temperature

Symbol Conditions

REF

GND = AGND = 0 V

VAI –0.3 to V

STG

Ta = 85˚C, per package 1300 max.

Ta = 85˚C, per pin 50 max.

— –50 to +150˚C ˚C

ValueParameter

–0.3 to +7.0 –0.3 to VDD +0.3 –0.3 to V

+0.3

–0.3 to VDD +0.3

–0.3 to AVDD +0.3

REF

Unit

1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. Functional operation should be restricted to the conditions as detailed elsewhere in this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Operating Conditions

Digital power supply voltage Analog power supply voltage Analog reference voltage Analog input voltage Storage holding voltage Operating frequency Ambient temperature

Fan-out

Symbol

REF

DDH

OSC

Ta — –40 to 85˚C ˚C

N TTL load, AD0 ~ AD7 2

Conditions

= 32 MHz

OSC

VDD = AV

ValueParameter

4.5 to 5.5

AVDD –0.3 to AV

to V

GND

REF

= 0 MHz 2.0 to 5.5

OSC

VDD = 5 V ±10% 32 MHz

MOS load 20

TTL Load, all other outputs 1

Unit

¡ Semiconductor MSM6679A-110 Voice Recognition Processor

DC Characteristics (VDD = 4.5 to 5.5 V, Ta = -40 to 85˚C)

Parameter Symbol Condition

High-level input voltage V

Low-level input voltage V

Output current = 400 mA, applied

High-level output voltage V

to AD0-AD7, ALE, and ROMRD

Output current = 200 mA, for all other I/O Output current = 3.2 mA, applied

Low-level output voltage V

to AD0-AD7, ALE, and ROMRD

Output current = 1.6 mA, for all other I/O

= VDD/0 V, applied to Ain, EA,

Input leak current

Input current

High-level output current I

Low-level output current I

Output leakage current I Input capacitance C Output capacitance C Analog reference power supply voltage

Power consumption I

FLOAT, and RESTART

, I

= VDD/0 V, applied to RES

f = 1 MHz, Ta = 25˚C

REF

= 32 MHz, no load

OSC

Rated Value

Min Typ

[1]

2.2 V

0.85 × V

0.80 × V

–0.3 0.8—Applied to AD0-AD7 –0.3 –0.3 0.2 × V

—Applied to OSC0 —Applied to all other I/O

VDD –0.4 V——

VDD –0.4 ——

— 0.4—

—

— 1/–250—V — 15/–15—VI = VDD/0 V, applied to OSC0 –2 ——VO = 2.4 V, applied to AD0-AD7 –1 10 ——VO = 2.4 V, applied to AD0-AD7

5——VO = 2.4 V, applied to all other I/O

— ——7 —mA4—During voice input — µA10—When voice input is halted —mA7555f

Max

+0.3—Applied to AD0-AD7

VDD +0.3—Applied to OSC0 VDD +0.3—Applied to all other I/O

0.15 × V

1/–1—

——VO = 2.4 V, applied to all other I/O

—5

Unit

µA

µA±2—VO = VDD/0 V

1. Typical condition is 5 V 25˚C.

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