MX93032 Datasheet, PDF (1/69 Pages) Macronix International – APPLICATION NOTE [M1 VERSION]

MX93032
APPLICATION NOTE [M1 VERSION]
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
P/N:PM0689
REV. 1.0.3,DEC. 13, 1999
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