VR StampTM
With Serial EEPROM
Speech Recognition Module
Data Sheet
2006 Sensory Inc.
P/N 80-0274-E
1
Description
Sensory's VR StampTM simplifies the design of
speech recognition products by integrating all key
components into a convenient 40-pin DIP footprint
module. A low-noise audio channel and standardized
footprint allow rapid prototyping, less debugging and
shorter time to market.
Using the VR StampTM Toolkit, application programs
can be downloaded into the VR Stamp. The VR
Stamp can then be removed from the Module
Programmer Board and plugged directly into the final
product. In-circuit reprogramming is also supported.
The VR Stamp offers 24 I/O lines, as well as
connections for a power, ground, microphone,
speaker, and logic-level RS232 interface.
Features
FluentChipTM Capabilities
Noise-robust Speaker Independent (SI) and
Speaker Dependent (SD) recognition
Many language models now available for
international use
High quality, 2.4-7.8 kbps speech synthesis &
sound effects with Sensory "SX" synthesis
technology
Speaker Verification Word Spot (SVWS) -
Noise robust voice biometric security
8 voice MIDI-compatible music synthesis
Audio Wakeup from sleep
Touch Tone (DTMF) output
Integrated Solution
RSC-4128 Speech processor & 1Mbit Flash
128Kb serial EEPROM for data
14MHz (main) & 32kHz (time keeping) clocks
24 I/O lines
Microphone preamplifier
Pulse Width Modulator (PWM) for Speaker
and optional DAC output
Low Power Requirements
V
DD
= 2.70V 3.6V
I
ACT
= 26mA @ 3V (typ. for complete module)
I
SLEEP
= <20uA @ 3V (typ. for complete
module)
VR Stamp Block Diagram
VR Stamp
POWER
1Mb
Flash
128Kb Serial
EEPROM
Speaker
(PWM)
Optional
DAC Output
IO Ports
Serial Com
MIC
Program/
Run
VR STAMP IC
VR StampTM Module - Serial EEPROM
Data Sheet
2
P/N 80-0274-E
2006 Sensory Inc.
DC Specifications
For details, refer to RSC-4128 Data Sheet (80-0206).
Major Components
U3 RSC-4128 IC
The RSC-4128 Integrated Circuit is the central speech processor.
Y1 Crystal
A 3.57 MHz crystal drives a 14.3MHz phase lock loop (PLL) in the RSC-4128 to create the system clock. Timer
1 is used for all speech recognition functions, and should only be used by the application programmer who is not
using speech recognition. Timer 3 is reserved for the application programmer.
Y2 Crystal
A 32.768 KHz crystal establishes the frequency of Timer 2 on the RSC-4128 IC. Timer 2 is useful for
timekeeping applications since it is not interrupted, unlike Timer 1.
R4 Microphone Source (gain) Resistor
A 1.2K on-board through-hole microphone source resistor is calibrated for use with a microphone with -44dB
sensitivity with 2.2K. This satisfies the -49dB system gain.
U2 1M Bit Flash Memory
This 1Mb Flash memory stores the application binary code.
U4 128K Bit Serial EEPROM Memory
This 128K bit serial EEPROM is designed to store speech templates and application data.
Data Sheet
VR StampTM Module Serial EEPROM
3
P/N 80-0274-E
2006 Sensory Inc.
VR Stamp Pin Specification
Pin Description
Pin Description
1 Microphone Return (Analog GND)
40 GND
2 Microphone VDD
39 VDD
3 Microphone Input
38 P0.7 (Serial EEPROM SDA)
4 Microphone Power
37 P0.6
5 DAC Output
36 P0.5
6 P2.0
35 P0.4 (Serial EEPROM SCL)
7 P2.1
34 P0.3
8 P2.2
33 P0.2 (Serial Com -Shutdown)
9 P2.3
32 P0.1 (Serial Com TXD)
10 P2.4
31 P0.0 (Serial Com RXD)
11 P2.5
30 P1.7
12 P2.6
29 P1.6
13 P2.7
28 P1.5
14 P1.0
27 Power Down (PDN)
15 P1.1
26 -Reset
16 P1.2
25 Program/-Run (-XM)
17 P1.3
24 PWM 1 (Speaker Output)
18 P1.4
23 PWM 0 (Speaker Output)
19 VDD
22 VDD
20 GND
21 GND
Note: P0.4 and P0.7 should be reserved for accessing SD/SV recognition data stored in Serial EEPROM.
Note: P0.0 and P0.1 are used for serial download of the binary. P0.1 is also the default pin for output of
diagnostic information. Another input pin needs to be assigned as a DiagEnable pin; at reset, diagnostic output
is enabled if the pin is low and disabled if the pin is high. After reset, the pin can be used for other purposes.
Reset (-Reset)
Input: A negative going pulse resets the VR Stamp.
Program/-Run (-XM)
Input: To run the application, leave this pin unconnected. To download application binary, pull this pin high with
a 100 Ohms resistor.
Power Down (PDN)
Output: The Power Down pin is an active high output, and it is controlled by the application firmware.
General Purpose I/O
Bidirectional: The VR Stamp has 24 general purpose I/O pins. Each line can be programmed as an input with a
weak pull-up resistor, input with a strong pull-up resistor, input without pull-ups, or as an output. For more
details, refer to the RSC-4128 Data Sheet (80-0206).
VR StampTM Module - Serial EEPROM
Data Sheet
4
P/N 80-0274-E
2006 Sensory Inc.
Microphone Ports
Input: The VR Stamp is designed so that you can use the on-board 1.2K microphone source resistor or external
custom microphone source resistor. Use the on-board microphone resistor if the microphone sensitivity provides
-49dB system gain with 1.2K. Use the external microphone source resistor otherwise. For more information on
microphones, refer to Design Note - Selecting a Microphone (80-0259).
NOTE: Sleep Current is 100uA (typ.) with a microphone.
Speaker Output (PWM0, PWM1)
Output: PWM ports can be directly connected to the speaker.
DAC Output
Output: An optional DAC output for the speaker is provided. To use DAC output, you need to provide the
external audio amplifier. Refer to page 4 of the Module Programmer Board Schematic (70-0069).
VR Stamp Schematic
Refer to: (70-0066).
Developing VR Stamp Applications
What you can develop with the VR Stamp:
Speaker Independent Recognition
Speaker Dependent Recognition
Speaker Verification
What you can not develop with the VR Stamp:
Record and Playback feature
Sample Programs
Sample programs in the FluentChipTM Technology Library are a great place to start. Please refer to the RSC-4x
Module Programmer Board Manual (80-0294) for the complete list of supported samples.
Creating SI Recognition Sets and Speech Files
For creating Speaker Independent recognition sets, use "Quick T2SITM-Lite (Pat. Pending)"
For creating speech files, use "QuickSynthesis 4TM"
Data Sheet
VR StampTM Module Serial EEPROM
575 N. Pastoria Ave., Sunnyvale, CA 94085
Tel: (408) 625-3300 Fax: (408) 625-3350
2006 SENSORY, INC. ALL RIGHT RESERVED.
Sensory is registered by the U.S. Patent and
Trademark Office.
All other trademarks or registered trademarks are the
property of their respective owners.
www.sensoryinc.com
The Interactive SpeechTM Product Line
The Interactive Speech line of ICs and software was developed to "bring life to products" through advanced speech
recognition and audio technologies. The Interactive Speech Product Line is designed for cost-sensitive consumer electronic
applications such as home electronics, home automation, toys, and personal communication. The product line includes the
award-winning RSC-4x general-purpose microcontrollers and tools, the VR StampTM 40 pin DIP module and tools, the SC
series of speech and music synthesis microcontrollers. Our suite of software development kits are designed to run on non-
Sensory processors and DSP's, and support most popular operating systems.
RSC Microcontrollers and Tools
The RSC product line contains low-cost 8-bit speech-optimized microcontrollers designed for use in consumer electronics.
All members of the RSC family are fully integrated and include A/D, pre-amplifier, D/A, ROM, and RAM circuitry. The RSC
family can perform a full range of speech/audio functions including speech recognition, speaker verification, speech and
music synthesis, and voice record/playback. The family is supported by a complete suite of evaluation tools and
development kits.
Speech Recognition Modules and Tools
The VR StampTM is a complete voice recognition module based around the RSC-4x and is ideal for fast design and easy
production. A low-noise audio channel and standardized 40 pin DIP footprint allow rapid prototyping, less debugging and
shorter time to market. The VR Stamp Toolkit includes everything needed to get started today, including VR Stamps, Module
Programming Board, sample applications, and a complete set of development tools featuring the Phyton IDE and limited-life
C compiler, QuickSynthesisTM 4 and Quick T2SI-LiteTM speech tools.
SC Microcontrollers and Tools
The SC-6x product line features the highest quality speech synthesis ICs at the lowest data rate in the industry. The line
includes a 12.32 MIPS processor for high-quality low data-rate speech compression and MIDI music synthesis, with plenty of
power left over for other processor and control functions. Members of the SC-6x line can store as much as 37 minutes of
speech on chip and include as much as 64 I/O pins for external interfacing. Integrating this broad range of features onto a
single chip enables developers to create products with high quality, long duration speech at very competitive price points.
FluentSoftTM Technology
FluentSoftTM Recognizer is the engine powering the FluentSoftTM SDK. It provides a noise robust, large vocabulary speaker
independent solution with continuous digit recognition and word spotting capabilities. This small footprint software recognizes
up to 5,000 words, runs on non-Sensory processors including Intel XScale, TI OMAP, and ARM9 platforms, and supports
operating systems such as MS Windows, Linux and Symbian.
3DmsgTM Technology
3Dmsg's Animated Speech technology offers animated avatars with advanced speech recognition and synthesis capabilities
for use in Smart Phones, Language Trainers, and Kiosk applications. Facial expressions can be configured for different
emotions and lip synchronization can be automatically driven from voice or text data. Visit
www.3Dmsg.com
for more
information.
Important notices:
Sensory Incorporated (Sensory, Inc.) reserves the right to make changes, without notice, including circuits, standard cells, and/or software, described or
contained herein in order to improve design and/or performance. Sensory, Inc. assumes no responsibility or liability for the use of any of these products,
conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products
are free from patent, copyright, or mask work right infringement, unless otherwise specified. Applications that are described herein for any of these products are
for illustrative purposes only. Sensory, Inc. makes no representation or warranty that suchapplications will be suitable for the specified use without further
testing or modification
.
Safety Policy:
Sensory, Inc. products are not designed for use in any systems where malfunction of a Sensory, Inc. product can reasonably be expected to result in a personal
injury, including but not limited to life support appliances and devices. Sensory, Inc. customers using or selling Sensory Incorporated products for use in such
applications do so at their own risk and agree to fully indemnify Sensory, Inc. for any damages resulting from such improper use or sale.
PDF 
ZIP