rsc-464 ETC-unknow, rsc-464 Datasheet - Page 13

• Manufacturer Part Number: rsc-464
• Description: Speech Recognition Processor
• Manufacturer: ETC-unknow

Preliminary Data Sheet
Memory Addressing
The RSC-464 can address up to 64Kbytes of default internal ROM providing Constant/Code Space. Constant/Code
Space is read-only in the RSC-464
One may also interface to serial memory devices for storage and retrieval of speech data, by using the serial
drivers for ROM, Flash, EEPROM, etc. provided in the FluentChip™ Technology Library. The serial memory option
is useful for applications for which speech or music data exceed the storage capacity of on chip ROM. The specific
I/O used by the serial interface are configurable. (See the “FluentChip™ Technology Library Manual” for more
information). An example of the optional use of external serial Flash is provided in Reference Schematic 1-1.
Constant/Code Space
When reading Constant/Code Space, an application can access up to 64KBytes.
instruction can read these first 64KBytes. However, the MOVC is more efficient for reading Constants within the
current Code Bank. This 64KBytes is called Code Bank 0.
NOTE: Constant Space may be referred to as “Const Space” in assemblers and compilers.
Oscillators
Two independent oscillators in the RSC-464 provide a high-frequency oscillator (OSC1), and a 32 KHz time-
keeping and power-saving oscillator (OSC2). The oscillator characteristics are:
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R e a d : M O V C (-R D R )
W rite : M O V C (-W R C )
OSC
0 0 F F F F H
0 0 0 0 0 0 H
1
2
M e m o r y M a p D ia g r a m
C o d e /C o n s ta n t (C o n s t ) S p a c e
3.58 MHz 4X
32768 Hz N/A
FREQ
P/N 80-0282-A
C o d e b a n k 0 a n d /o r
PLL PINS
C o n s ta n ts (C o n s t)
XO1
XO2
XI1
XI2
N /A
Ceramic resonator
Internal RC
SOURCES
Crystal
Crystal
LC
W rite : N o n e
R e a d : M O V X (-R D R ),
The MOVC and MOVX
if D 2 .4 = 0
© 2005 Sensory Inc.
RSC-464