
1
P/N:PM0689
REV. 1.0.3,DEC. 13, 1999
MX93032
1.0 GENERAL DESCRIPTIONS
MX93032-M1 is an engine chip on which digital an-
swering machine (DAM) with full duplex speaker phone
is implemented. Besides, CAS tone detection capa-
bility and FSK decoder for Caller-ID service has also
been implemented as well.
It provides speech processing / management mod-
ules, including speech compression/decompression,
silence management, telephone line signal process-
ing, Macronix MX29F16A FLASH management, line
echo cancellation and acoustical echo cancellation,
etc.
The MX93032-M1 has built-in DSP mode and MCU
mode. In DSP mode, users do not need external mi-
croprocessors and can effectively reduce the overall
system cost in DAM with full-duplex speakerphone
system. In MCU mode, the MX93032-M1 is controlled
by an MCU (micro controller) via a 8 bit parallel or
serial interface.
2.0 FEATURES
Switchable 4.8kbps/12.8kbps speech compression/
decompression algorithm for message recording/play-
back.
Minimum 15 or 40 minutes of recording time for one
16M bits MX29F16A FLASH based on 12.8K or 4.8K
compression rate, respectively.
Low (4.8kbps) or High (12.8kbps) compression rate
with silence management technique for voice prompt
making. Voice prompt can be stored in Flash memory.
Support total 127 messages, maximum 7 OGMs and
maximum 8 personal mailboxes.
DTMF generation and detection with near-end echo
cancellation.
Provide single low crystal solution (FLL).
Built-in DSP mode and MCU mode. In DSP mode,
user can mask the system code into the MX93032-
M1. In MCU mode, user can control the MX93032-M1
via MCU (micro controller).
Provide standard sample program written by 8051
assemble for customer development.
Full duplex speakerphone with both acoustical echo
canceller (AEC) and line echo canceller (LEC)
Built-in CAS signal detector for monitoring the pres-
ence CPE alerting signal in Calling Identity Delivery
on Call Waiting.
FSK decoder for Calling Identity Delivery on CID Type
I and CID Type II
Caller ID Type II can be turned on under speaker phone
mode
Auto detecting MCU mode and DSP mode
APPLICATION NOTE [M1 VERSION]