rsc-300 ETC-unknow, rsc-300 Datasheet - Page 2

• Manufacturer Part Number: rsc-300
• Description: Speech Recognition Microcontroller
• Manufacturer: ETC-unknow

RSC-300/364
RSC-300/364 OVERVIEW
The RSC-300/364 is a member of the Interactive
Speech™ line of products from Sensory. It features a
high-performance 8-bit microcontroller with on-chip
A/D, D/A, preamplifier, RAM and ROM (RSC-364
only). The RSC-300/364 is designed to bring a high
degree of integration and versatility into low-cost, power-
sensitive toy applications.
Various functional units have been integrated onto the
CPU core in order to reduce total system cost and
increase system reliability without degrading system
performance. The RSC-300/364 delivers 4 MIPS of
integer performance at 14.32 MHz providing maximum
performance at minimum cost.
The CPU core embedded in the RSC-300/364 is an 8-bit,
variable-length-instruction,
instruction set is somewhat similar to the Zilog
has a variety of addressing mode mov instructions. The
RSC-300/364 processor avoids the limitations of
dedicated A, B, and DPTR registers by having
completely symmetrical source and destinations for all
instructions. Of the 2.5 Kbytes of internal RAM, 2
Kbytes are organized as a Data Space, with 0.5K used for
Register Space.
SPEECH RECOGNITION
The RSC-300/364 uses a neural network to perform
speaker-independent
recognition. Speaker-dependent recognition requires
external memory to store speech recognition information
(e.g., SRAM, optional Serial EEPROM, Flash Memory).
Speaker-independent recognition requires on-chip or off-
chip ROM to store the words to be recognized. The
RSC-300/364 has several additional speech recognition
features as described below.
Continuous listening allows the chip to continuously
listen for a specific word. With this feature a product can
be used in a normal environment and only “activates”
when a specific word, preceded by quiet, is spoken.
SPEECH AND MUSIC SYNTHESIS
The RSC-300/364 provides high-quality speech synthesis
by using a hybrid of a time-domain compression scheme
that improves on conventional ADPCM and a customized
reuse of sounds. Speech synthesis requires on-chip or
off-chip ROM to store audio sounds for synthesis.
The RSC-300/364 provides high-quality, low-cost four-
voice
simultaneous instruments for harmonizing. The RSC-
300/364 uses a MIDI-like system to generate music.
2
music
synthesis
or
speaker-dependent
which
microcontroller.
From the Interactive Speech™ Line of Products
allows
TM
multiple,
78, and
speech
The
RECORD AND PLAYBACK
The RSC-300/364 can perform audio record and
playback at various compression levels depending on the
quantity and quality of playback desired. Data rates of
under 14,000 bits per second are achievable while
maintaining very high quality reproduction. The RSC-
300/364 also performs silence removal to improve sound
quality and reduce memory requirements.
SPEAKER VERIFICATION
The RSC-300/364 can also perform text-dependent
speaker verification. After a speaker trains the chip on a
specific word, the chip is able to identify whether that
word is spoken by the original speaker, thus providing
biometric security.
POWER
The typical operating current is 10 mA operating at
14.32 MHz and 3V. Lowering clock frequency reduces
power
requires a 14.32 MHz clock. Standby current is <5 A in
power down mode.
RSC-300/364 Architecture Diagram
BUFOUT/
P0.0-P0.7
XI1, XO1
XI2, XO2
P1.0-P1.7
DACOUT
AiNØ
AiFE2
AiN1
PWM
AiFE1
PRE-AMP
OSC1
OSC2
MODULATOR
consumption,
ADC
DAC
CONTROL
ANALOG
PULSE
WIDTH
TIMER1
TIMER2
AOFE1
AOFE2
AOFE3
PROCESSING
SPEECH
UNIT
although
INTERNAL ROM (RSC-364)
speech
REGISTER SPACE
2K TECHNOLOGY
STACK SPACE
BREAK POINT
TIMING AND
CONTROL
REGISTER
32K x 8
32K x 8
SRAM
DATA SHEET
CPU
INTERFACE
EXTERNAL
MEMORY
448 bytes
recognition
8 levels
HIGH
L O W
-RESET
-TE1/
PWM
-XMH
-XML
-RDD
A[15:0]
-RDC
-WRC
-WRD
D[7:0]