MX93032 Просмотр технического описания (PDF) - Macronix International

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MX93032

APPLICATION NOTE [M1 VERSION]

Macronix International 

MX93032

MESSAGE PLAYBACK

Random access for playback of any new message or

message with specified Msg ID is supported by the

MX93032-M1. During playback, the MX93032-M1 also

monitors the telephone line signals, and Play Pause func-

tion is provided. The MX93032-M1 is able to fast-forward

the playback of a recorded message, and the playing

speed will be up to 33 %.

MESSAGE DELETION

The MX93032-M1 provides two ways to delete recorded

ICMs. One is the two-step method - the combination of

Del Mark and Real Del on Play and Delete command,

and the other is the immediate method - Delete com-

mand. The two-step method enables the control program

to handle the deletion more flexibly, while the immediate

method deletes a specified message directly.

VOICE PROMPT

For high-quality voice prompt playback, the MX93032-

M1 utilizes the built-in speech decoder and external

EPROM/ROM or FLASH to store the vocabulary. The

MX93032-M1 also supports up to a 32K-word external

EPROM/ROM that allows minimum 1.8 minutes of voice

prompt storage. If voice prompt data is stored in FLASH,

space of maximum 60K words (minimum 3.4 minutes) is

permitted.The external (upper part) voice prompt is also

allowed. But if FLASH voice prompt is enabled, the ex-

ternal voice prompt will be disabled.The vocabulary sup-

ports up to 255 phrases. Given a phrase number in the

Voice Prompt command from the HOST, the MX93032-

M1 outputs the corresponding utterances to the Codec

interface. The starting address of external voice prompt

data could be located at data address 1000H, or pro-

gram address 8000H.

During playback of the voice prompt, the MX93032-M1

monitors the telephone line signals.

PERSONAL MAIL

The MX93032-M1 supports up to 8 mailboxes that may

be used for personal mail application. Each mailbox has

its own ICM/MEMO Msg ID. The total Msg.ID is 127 for

all of mailbox. Before recording, playing or deleting mes-

sages, the HOST should set the corresponding mailbox

number first with Personal Mail command.

TIME KEEPING

There is a timer clock in the MX93032-M1. The HOST

can issue Set Time and Get Time commands to get time

services. The clock also supports system to stamp time

to the recorded incoming message.

DTMF DETECTION

For remote control operation of the answering machine,

the MX93032-M1 monitors the incoming telephone line

signal to detect the presence of DTMF signal.

TONE GENERATION

Up to double tones can be generated by the MX93032-

M1. The levels and frequencies are programmable by

the HOST.

CALL PROGRESS TONE DETECTION

The MX93032-M1 supports the detection of call progress

tone within the band of 300 - 640 Hz for the incoming

telephone line signal. The tone detector is implemented

with a bandpass filter. Indication of the presence of call

progress tone is responded to the control program, and

could be used to terminate recording.

NEAR END ECHO CANCELLATION

The MX93032-M1 implements a near end echo cancel-

ler in software to enhance the detection of DTMF and

Call Progress Tone during Playback and Voice Prompt

mode.

FSK Decoder

All of the services, Calling Number Delivery (CND), Call-

ing Name Delivery (CNAM) and Calling Identity Delivery

on Call Waiting (CIDCW), exploit the Frequency Shift

Keying (FSK) method to transmit the desired data from

the SPCS to CPE. Depending on the specific service,

P/N:PM0689

REV. 1.0.3, DEC. 13, 1999

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