MXIC MX93032-M1 Datasheet
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MX93032
1.0 GENERAL DESCRIPTIONS
• MX93032-M1 is an engine chip on which digital answering machine (DAM) with full duple x speaker phone
is implemented. Besides, CAS tone detection capability and FSK decoder for Caller-ID service has also
been implemented as well.
• It provides speech processing / management modules, including speech compression/decompression,
silence management, telephone line signal processing, 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 microprocessors 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/playback.
• 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. V oice 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 MX93032M1. 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 presence CPE alerting signal in Calling Identity Delivery
on Call W aiting.
• FSK decoder for Calling Identity Delivery on CID T ype
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]
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MX93032
3.0 BLOCK DIAGRAM
DSP MODE
MCU MODE
Dis play
MX93032 -M1
Commands
FLASH
Keyp ad
MX93002
DAA
Spea ker
Microphone
Telephone Line
Display
MX93032-M1
Commands
FLASH
MCU
Commands
Keypad
MX93002
DA A
Speaker
Microphone
Telephone L ine
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MX93032
4.0 PIN CONFIGURATIONS
4.1 MCU MODE
EAD9
EAD10
EAD11
EAD12
EAD13
EAD14
GND
VDD
EAD15
NMI\
INT1\/SCKL
PHILO
CDR0
PHRD\
CMCK
CFS
CDX0
PHWR\
PHDB0
PHDB1
ED11
ED12
ED13
VDD
GND
ED14
ED15
X1\VDD
X2\GND
A19
A18
A17
IPT8
FCE2\
FCE1\
RST\
EROM
SDEN\
SDATA
A16
A15
OPT9
OPT8
OPT7
OPT6
OPT5
OPT4
OPT3
OPT2
OPT1
OPT0
X32I
X32O
PACK\
CDR1
PDN
IPT5
IPT4
IPT3
P/S
IPT1
IPT0
VDD
GND
SI/PHDB7
SO/PHDB6
PHDB5
PHDB4
PHDB3
PHDB2
ED10
ED9
ED8
ED7
ED6
ED5
ED4
ED3
ED2
ED1
GND
VDD
ED0
HOLD\
CDX1
EDCE\
EPCE\
ERD\
EWR\
EAD0
EAD1
EAD2
EAD3
EAD4
EAD5
EAD6
FLLEN\
GND
EAD7
EAD8
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MX93032
4.2 DSP MODE
EAD9
EAD10
EAD11
EAD12
EAD13
EAD14
GND
VDD
FAD15
NMI\
INT1\
A16
CDR0
A15
CMCK
CFS
CDX0
OPT16PHDB0
PHDB1
ED11
ED12
ED13
VDD
GND
ED14
ED15
X1\VDD
X2\GND
A19
A18
A17
IPT8
FCE2\
FCE1\
RST\
EROM
SDEN\
SDATA
OPT11
OPT10
OPT9
OPT8
OPT7
OPT6
OPT5
OPT4
OPT3
OPT2
OPT1
OPT0
X32I
X32O
XF\
CDR1
IPT6
IPT5
IPT4
IPT3
IPT2
IPT1
IPT0
VDD
GND
BIO7
BIO6
BIO5
BIO4
BIO3
BIO2
ED10
ED9
ED8
ED7
ED6
ED5
ED4
ED3
ED2
ED1
GND
VDD
ED0
HOLD\
CDX1
EDCE\
EPCE\
ERD\
EWR\
EAD0
EAD1
EAD2
EAD3
EAD4
EAD5
EAD6
FLLEN\
GND
EAD7
EAD8
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5.0 PIN DESCRIPTIONS
POWER/CLOCK/CONTR OL PINS :
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
VD D 23, 43, 69, 84 5V power source
GND 24, 44, 53, 70, 85 Ground
X1/VDD 88 32.256MHz crystal input/Connect to VDD in single low X'tal mode
X2/GND 8 9 32.256MHz crystal output/Connect to GND in single low X'tal mode
RST\ IS 96 Po wer-on reset
XF\ OA 14 External flag if UPMODX=1. This pin can be directly written by one
DSP instruction. Default inactive (5V output)
HOLD\ IS 67 Hold DSP clock down and release bus
EROM IS 97 Disable internal ROM, use external ROM only
NMI\ IS 41 Non-maskable interrupt pin
INT1\ IS 40 Interrupt pin
X32O 13 32.768KHz crystal output
X32I 12 32.768KHz crystal input
FLLEN\ IS 54 1 : Dual X'tal mode
0 : Single low X'tal mode
P/S IS 20 1:Parallel interf ace in MCU mode
0:Seriall interface in MCU mode
PDN IS 1 6 0:POWER DOWN
CODEC INTERF ACE PINS :
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
CFS OA 3 5 Codec frame sync, 8KHz (9.6KHz). Output low in power down mode.
CMCK OA 36 Codec master clock, 1.536MHz. Output low in power down mode.
CDX0 OA 3 4 Codec data transmit
CDR0 IS 38 Codec data receive
CDX1 OA 66 Codec data transmit
CDR1 IS 15 Codec data receive
SDEN\ OB 9 8 Serial data enable(for MXIC codec family)
SD ATA OB 99 Serial data transmit(for MXIC codec family)
IPT : Input port
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
IPT4-IPT5, IS 18-17,93 Input port
IPT8
IPT0-IPT3 ISH 22-19 Input port with internal pull high resistor (R=30KW)
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MX93032
OPT : Output port
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
OPT0-OPT9 OB 2-11 Output to pin, all output values are registered and may be read back
when read by "IN" instruction.
OPT10-11 OB 1, 100 Output to pin, all output values are registered and may be read back
when read by "IN" instruction. Only available for DSP mode
MEMORY INTERF A CE PINS :
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
EAD0-EAD15 OA/Z 61-55, 52-45, 42 External memory address bus.
ED0-ED15 IT/OA/ZR 68, 71-83, 86-87 External memory data bus. With soft latch feed back current is 250
u
A
EDCE\ OA/Z 6 5 External data chip enable
EPCE\ OA/Z 6 4 External program chip enable
ERD\ OA/Z 63 SRAM/ROM/IO external read
EWR\ OA/Z 62 SRAM/ROM/IO external write
A15 0A 37 (DSP MODE) address bus for FLASH
1 (MCU MODE)
A16 OA 39 (DSP MODE) address bus for FLASH
100 (MCU MODE)
A17 OA 9 2 address bus for FLASH
A18 OA 9 1 Address bus for FLASH
A19 OA 9 0 Address bus for FLASH
FCE1\, FCE2\ OB 95, 94 FLASH chip enable
u
P Parallel Interface (MCU MODE)
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
PHDB0-PHDB7 IS/OA/Z 25-32 Parallel data bus
PHILO IS/OA/Z 39 Select High or low byte. 1: high byte , 0: low byte
PHRD\ IS/OA/Z 37 HOST read enable
PHWR\ IS/OA/Z 33 HOST write enable
P A CK\ OA 14 Response is ready
uP Serial Interface (MCU MODE)
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
SCLK IS 40 Synchronous clock
SI OA/Z 25 HOST serial data in
SO IS/Z 2 6 HOST Serial data out
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MX93032
BIO: Bi-directional I/O (DSP MODE)
SYMBOL PIN TYPE PIN NUMBER DESCRIPTION
BIO7-BIO0 IT/OA 25-32 Input/output port when UPMODX = 1. Direction is controlled by
BIO15-BIO8 (see BIOR).
NOTE :
IT :TTL level input
IS :CMOS level Schmidt trigger input (hysteresis : 2V~3V)
ISH :CMOS level Schmidt trigger input with internal pull high resistor (~30KW)
OA :8mA drive level output
OB :16mA drive level output
Z :high impedance state
ZR :high impedance state with soft latch
MUL TIPLEX PINS:
PIN NUMBER PIN NAME DSP MODE PIN NAME MCU MODE
25~32 BIO(7:0) Input/output port PHDB(7:0) Host data bus
39 A16 Flash address PHILO High low data select
37 A15 Flash address PHRB\ Host read
33 OPT16 Output port PHWR\ Host write
14 XF\ External flag PACK\ Acknowledge to host
100 OPT11 Output port A16 Flash address
1 OPT10 Output port A15 Flash address
PIN NUMBER PIN NAME FLLEN\=1 (Dual X'tal) PIN NAME FLLEN\=0 (Single X'tal)
88 X1 32.256MHz crystal input VDD P o wer V DD
89 X2 32.256MHz crystal output G N D Po wer ground
NOTE FLLEN\: pin 54
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MX93032
6.0 FUNCTIONAL DESCRIPTIONS
HOST INTERF ACE (MCU MODE)
The command and response of the MX93032-M1 are made up by a 16-bit code. The protocol that one command sent
and one response received must strictly be obeyed by HOST ; otherwise, dead lock will occur. Meanwhile, both
parallel interface and serial interface are provided by the MX93032-M1.
8-bit parallel :
A 16-bit code can be accessed by HOST two times via setting PHILO pin. For writing operation, the HOST write the
low byte of the command into the register of DSP, when PHILO is pulled to low , DSP does nothing but latches data.
Following, PHILO is set to high and high byte of command is written into register , then DSP will perform the command
issued by HOST and send out the response. DSP will pull PACK\ to be low to indicate that response is ready . HOST
must read the low byte and then high byte sequentially. PACK\ will reset to high when the high byte is read b y HOST.
All of the description given above will be illustrated by the following timing chart.
PHILO
PHDB 0 - 7
PHWR\
PACKB\
PHRD\
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MX93032
Synchronous Serial :
The protocol of synchronous serial interface will be interpreted by the timing chart given below .
16 PULSES
SCLK
SI
Tget
16 PULSES
SCLK
SO
Tput
0 R15 R14 R1 R0
C15
C14
C1 C0START
0
…
…
…
…
Note: SCLK : synchronous clock sent by HOST,
SI : HOST serial in,
SO : HOST serial out,
Tget and Tput should be larger than 200 uS
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MX93032
Decision Rules between MCU mode and DSP Mode:
1 . The contents located on 0xE000 and 0xE001 are 0x1234 and 0x5678, It will be considered as external DSP mode.
This configuration is used for developing customer’s control codes on MXIC’s MX93032-M1 IC with standard
code.
2 . The contents located on 0x680E and 0x680F are 0x5678 and 0xA988, it will be considered as MCU mode. This is
the only one configuration for MCU mode under developing and mass production.
3 . Either the content located on 0x680E and not 0x5678 or that located on 0x680F are not 0xA988, it will be consid-
ered as DSP mode. The configuration is used for mass production f or DSP mode adopted.
4 . The decision priority depends on the items order. That is , the item labeled with smaller number has higher priority .
CONTROL CODE CONFIGURA TION (DSP MODE)
There are two configurations for customer development or production.
Configuration 1 :
In this configuration, the BIOS+ALGORITHM and control codes are all running in the external high-speed EPROMs
or SRAMs. The MX93032-M1 pin 97 (EROM) m ust be set to high.
26K words
6K words
0000H
6800H
7FFFH
External high-speed EPROMs or SRAMs
BIOS+ALGORITHM
c
(address 0000H - 67
F
cont rol co de
(address 6800H - 7F
This configuration is mainly used in the development stage and the access time of high-speed EPROMs or SRAMs
must be less than 30ns.
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MX93032
Configuration 2 :
In this configuration, the BIOS+ALGORITHM code is running in the MX93032-M1 internal ROM and the control code
running in the external low-speed EPROMs. The MX93032-M1 pin 97 (EROM) must be set to low .
26K words
0000H
6800H
7FFFH
DSP in t e rnal RO M
BIOS+ALGORITHM
c
(address 0000H - 67
F
Ext er n al l ow -sp e ed EPRO M s
0000H
E000H
FFFFH
ex t e rnal voi ce prom p
data address 1000H
ex t e rnal voi ce prom p
program address 80
0
1000H
max. 8K words
8000H
co ntrol code
(address E000H - F
F
This configuration can be used at the development stage or f or production. The control code must start with two words
1234H and 5678H.
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MX93032
Configuration 3 :
In this configuration, the BIOS+ALGORITHM and control codes are all running in the MX93032-M1 internal ROM. The
MX93032-M1 pin 97 (EROM) must be set to low .
26K words
6 K words
00 00H
6800H
7FFFH
DSP internal ROM
BIOS+ALGORITHM
c
(addres s 0000H - 67
F
cont rol co de
(addres s 6800H - 7F
0000H
8000H
FFF FH
External low-speed EPROMs
exter nal voice promp
data address 1000H
exter nal voice promp
program address 80
0
1000H
This configuration is used for production.
T o set the v oice prompt configuration, see the MX93032-M1 Mode 7.
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MX93032
MX93032-M1
The MX93032-M1 provides DSP embedded functional
modules, including speech compression/decompression,
telephone line signal processing, ROM voice prompt,
Macronix MX29F16A Flash management, time keeping
and full duplex speaker phone.
In MCU mode, the MX93032-M1 service is requested
via a command call with 16 bits parameter sent by Micro
controller, and answered 16 bits sent by DSP. In DSP
mode, user's system control program can be masked-in
the MX93032.
The MX93032-M1 supports 16 modes of service and
responses useful to operational information about timing, FLASH utilization, detected DTMF, etc.
Hereafter , HOST means "external micro-controller" f or
MCU mode, and it means "system control program"
for DSP mode.
FLASH MANAGEMENT
The MX93032-M1 uses MXIC's MX29F16A FLASH as
storage device for message and/or voice prompt data.
Up to two MX29F16A can be supported by the MX93032M1 service command.
The MX29F16A is a 16M-bit FLASH memory organized
as 1M word x 16. It includes 16 sectors (each sector is
64K words) and some of these sixteen sectors are bad.
T o manage the MX29F16A, the MX93032-M1 will detect
and then give up bad sectors and only utilize the good
sectors. For the purpose of storage efficiency , each good
sector is further divided into 32 blocks (each block contains 2K words). Each block can store speech data of
about 6.8 seconds for 4.8kbps compression algorithm
and 2.55 seconds for 12.8kbps compression algorithm.
MESSAGE RECORDING AND ST ORAGE
The MX93032-M1 provides high quality speech compression techniques for recording and playback functions. It
can permit over 15 minutes or 40 minutes of speech
storage in each 16M bit of MXIC's MX29F16A FLASH
device based on 12.8K or 4.8K compression rate, respectively.
The MX93032-M1 supports up to 127 variable length in-
coming and outgoing messages that are labeled as Msg
ID 1 to 127. Although ICM could range from Msg 1 to
127, Msg IDs 127 to 121 are the only places for outgoing
messages (OGM) storage so that the deletion and recovery of old OGM are easier to maintain. The Msg IDs
of incoming messages are labeled chronologically and
rearranged automatically after recording or deleting. ICM
with Msg ID 1 is the oldest recorded incoming message.
Each message can be recorded by either 4.8K or 12.8K
compression rate depending on system programmer’s
assignment.
During recording, the MX93032-M1 also monitors the
telephone line signal to detect the presence of DTMF,
Call Progress Tone and Continuous T one and responses
to the control program. The HOST can stop recording,
and delete the last n*400ms/200ms from the memory
using a Record command with assigned Tail Cut factor.
The MX93032-M1 can generate a desired tone during
recording voice message, which allows the application
such as two-way recording. During recording, Record
Pause function is provided.
The recording voice signal, received through the CODEC
input, is transmitted back to the CODEC output by the
MX93032-M1 service commands.
OUTGOING MESSAGE (OGM) RECORD
The MX93032-M1 provides flexible recording ways for
outgoing message. The HOST can select to delete the
old OGM before a new one is recorded or to abort the
new OGM record without losing the old OGM.
NEW/OLD MESSAGE
For the control program to manipulate incoming messages more handily , the MX93032-M1 keeps an internal
record of the ICM to identify the new/old status of messages.
Before playback, the status of ICM is considered as
"new". All incoming messages that have been played
could change their status to "old" by issuing Real Del bit
on Delete command. After Real Del is issued, all new/
old ICM Msg IDs will be rearranged. The functions , Play
New or Delete All Old messages , are provided by the
MX93032-M1 in the command set.
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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 P ause function is provided. The MX93032-M1 is ab le to fast-forw ard
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 command. The two-step method enab les the control program
to handle the deletion more flexibly, while the immediate
method deletes a specified message directly .
VOICE PR OMPT
For high-quality voice prompt playback, the MX93032M1 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 external voice prompt will be disabled. The v ocabulary supports up to 255 phrases. Giv en a phrase number in the
V oice Prompt command from the HOST, the MX93032M1 outputs the corresponding utterances to the Codec
interface. The starting address of external voice prompt
data could be located at data address 1000H, or program 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 cloc k 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 GENERA TION
Up to double tones can be generated by the MX93032M1. The levels and frequencies are programmable by
the HOST .
CALL PROGRESS T ONE 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 CANCELLA TION
The MX93032-M1 implements a near end echo canceller 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), Calling Name Delivery (CNAM) and Calling Identity Delivery
on Call Waiting (CIDCW), exploit the Frequency Shift
Keying (FSK) method to tr ansmit the desired data from
the SPCS to CPE. Depending on the specific service,
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data transmission may occur with the CPE in an onhook state or in an off-hook state. The specifications f or
data transmission are given on SR-TSV-002474 which
are classified into three layers, ph ysical lay er, data link er
layer and message assemble layer. The MX93032-M1
only takes the responsibility to decode physical layer.
For Data link layer (Check Sum) and Message Assemble
layer (the meaningful data), system should take care.
The performance test associated with physical layer
based on SR-3004 will be given on Appendix A.
Note: CPE: Custom Premises Equipment
SPCS: Stored Program Controlled Switching
System
CAS Detection
For Calling Identity Deliv ery on Call Waiting, the MX93032M1 will monitor the presence of CPE alerting signal according to the specification given on Bellcore Special
Report SR-TSV-002476.
VOX DETECTION (DIGITAL VOICE ACTIVATED RECORDING)
The speech detection is implemented on the MX93032M1 to indicate whether the recording signal level is above
the VOX threshold. If the control prog r am sets the VO X
Record bit on Initial command, the recording of the speech
would start when the voice activity is detected. The HOST
has to set V O X threshold by issuing command Mode 13.
Hexadecimal numbers f or V OX threshold are listed in T able
6.
SPEAKERPHONE
The speaker system provided by the MX93032-M1 contains two adaptive filters which are called as acoustical
echo canceller (AEC) and line echo canceller (LEC). The
purpose of AEC is used to cancel the acoustical echo
between microphone and speaker which is caused by
the sound reflection within space. A LEC cancels the
echo resulted by the 4 to 2 wire telephone line connection and impedance mismatches between customer premises and the central office.
When speakerphone is activated, the algorithms associated with AEC and LEC not only reduce the echo heard
on the both ends, but also prevent feedback instability
(singing) from occurring. Moreove r, the MX93032-M1 provides automatic gain control (AGC) for microphone channel which helps the outgoing voice to keep at a desired
level especially f or a moving talk er, and speak er volume
control which allows the user to adjust the speaker volume for his need. In addition, DTMF/Tone generations
and call-progress tone detection are also provided.
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DAA CONSIDERA TION FOR SPEAKER PHONE
It should be emphasized that DAA circuit pla ys an important role on improving the performance of speakerphone. This
sub section gives some guides on how the D AA circuit may be "tuned". A diagram of D AA circuit must be given for
simplifying the flowing interpretation.
Referring to figure given above, we have 4 analog amplifiers which are
1.Microphone Pre-Gain (MIC GAIN)
2.Line Out Gain (LINE DRV)
3.Line in Pre-Gain (LINE GAIN)
4.Speaker amplifier (SPK DRV)
Obviously, the 4 amplifiers together with the Line Out volume, Speaker Volume, receive attenuator , transmit attenuator, two volume compensators, acoustical coupling function Hac(f) and line coupling function Hlin(f) compose a
closed loop system. The AEC and LEC will pro vide additional attenuation to the loop gain one they con verge .
To have a better performance on speaker phone, w e strongly recommend that analog gain of D AA must satisfy the
following two criteria:
1.As the near end (Microphone side) speaks only , the lev el at Codec 2 should fulfill that, "codec 2 input must
be less than Codec 2 output due to electrical echo". This meaning can be e xpressed as
LINE_DRV * Hlin(f) * LINE_GAIN < 1
2.As the far end (Line Side) speaks only, the level at Codec 1 should fulfill that, "Codec 1 output must be
greater than Codec 1 input resulting from acoustical echo". This meaning can be expressed as
SPK_DRV * Hac(f) * MIC_GAIN < 1
By considering the criterion 1, it should pay more attention that minimum echo should be reached by improving the
telephone line interface ( that is, reducing Hlin(f)) and not by reducing LINE_GAIN due to that the MX93032-M1 must
obtain the high enough signal to process. For the same reason for criterion 2, the low echo should be achieved by
good acoustical and mechanical decoupling rather than by decreasing MIC_GAIN.
The ultimate target for hardware design is to create one system which not only satisfies two criteria given above, but
also provides a desirable volume to both speaker and telephone.
CODE C1
MX93032-M1
SPK
DR V
MIC
GAIN
AC OU STIC
COUP L ING
CODE C2
LINE
GAIN
LINE
DR V
4 - 2 WIRE
COUPLING
LINE
COUPLING
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MX93032
QUER Y AND REPORT
The MX93032-M1 is capable of reporting to the control program about the query of the current status , such as the
number of recorded messages, the number of new messages, the number of old messages, the available recording
time of FLASH, the time of recorded message, and the FLASH good/bad check.
POWER DO WN
With the power of backup batteries, the MX93032-M1 is capable of keeping messages and data stored in the FLASH
during power failure. In power down mode, the MX93032-M1 will run at a lower clock rate to reduce power consumption.
CRYST AL CONNECTION
The MX93032-M1 allows two ways of crystal connections :
1. Normal approach: use both high crystal (32.256 MHz) and low crystal (32768 Hz). T o enab le this mode, the FLLEN\
(54) pin must be connected to VDD. In this mode, the DSP high clock is gener ated from the high crystal directly,
and the low crystal is mainly used in power down mode.
2. FLL (F requency-Lock ed-Loop) approach: use only low crystal (32768 Hz). To enable this mode, the FLLEN\ (54) pin
and X2 (89) pin must be connected to ground and the X1 (88) pin to VDD . In this mode , the low crystal is to generate
all the DSP system clocks and the high crystal can be saved to reduce the overall system cost.
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MX93032
7.0 OPERATIONAL DESCRIPTIONS
When the system is powered up, the RST\ pulse will make the MX93032-M1 to run programs from address 0. After
check sum of internal ROM codes checked and some essential initialization of DSP are finished. In MCU mode, the
MX93032-M1 is ready to poll the command issued by the HOST and indicate the HOST by setting PACK\ or SI\ to be
low . The HOST should poll the indication sent b y the MX93032-M1 and read out the pseudo response first. F ollowing
some necessary initialization given below must be set by HOST .
1. Set telephone data configuration
2. FLASH initialization depending on the FLASH good/bad check
3. Codec initialization if necessary
4. Setting V oice prompt configuration
5. Setting Silence threshold
6. Setting VO X level
8.0 MODES OF OPERATION
The MX93032-M1 supports 16 modes of operations, which are listed as follows :
Command Mode Mode Name
0 Idle Mode
1 Record
2 Play
3 Message Status
4 DTMF Generator
5 Line Monitor
6 Delete Message
7 Set Current Time/Voice Prompt/Silence Threshold
8 Get Current Time
9 Initial and Test Memory
10 Get Record Message Information
11 V oice Prompt
12 Speaker Phone
13 Personal Mail
14 T elephone Data
15 CAS Detection
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MX93032
IDLE :
This command is allowable to be issued within any other operation which is processing. As soon as the MX93032-M1
receives Idle command, the original operation will be stopped automatically .
RECORD
When Record command is received from the HOST, the MX93032-M1 performs speech compression, stores the
message into FLASH, and monitors telephone line. If the V O X Record bit had been set to 1 on Initial and Test Memory
command, recording of the speech will start upon the voice activity detected, else the MX93032-M1 starts recording
immediately after Record command is received.
Clearing Marked Record (bit 8-10) to 0, if it is recording ICM. When recording OGM, the HOST should set Marked
Record (bit 8-10) to desired number other than 0 as OGM ID .
Setting bit 5 (Annc Del) to 1 on Initial and Test Memor y command, the HOST can choose to delete the old OGM
before a new one is recorded. If that bit is cleared to 0, the ne w OGM recording can be aborted without losing the old
OGM by issuing Mark Fail (bit 11) on Record command.
During recording, the HOST can pause the recording by setting Pause (bit 7) to 1 and resume recording b y clearing
that bit. Line monitoring will continue during pause.
The HOST can stop recording by setting Stop (bit 6) to 1, and delete the last n*400ms/200ms from the memory by
using a Record command with assigned Tail Cut factor (bit 0-5).
While system memory is full, MX93032-M1 will stop message recording, show the status in response word (bit 7,
Mfull).
During Record mode, the HOST can instruct the MX93032-M1 to generate a tone by issuing the DTMF Generator
command. Setting Stop bit on DTMF Generator command will stop tone generating.
The MX93032-M1 will terminate Record mode when Stop bit on Record command is set to 1.
Note: The MX93032-M1 supports up to 127 incoming and outgoing messages recording which are labeled as Msg ID
1-127. The Msg IDs of incoming message are labeled chronologically and rearranged automatically after recording. Although ICM could range from Msg ID 1 to 127, Msg IDs 127 to 121 are the only places for outgoing
message storage. So, it is strongly suggested that the HOST should keep an upper bound of the number of
ICM. (For example, upper bound of ICM = 127 - maximum OGM number that will be applied in user's specification.)
PLA Y
When Play command is received from the HOST, the MX93032-M1 performs message playback and line monitoring.
The Msg ID (bit 0-6) is set by the HOST to specify which message to play. To playback new message (non-played
one), set Play New (bit 10) to 1, then the MX93032-M1 will search to play the non-played message with specified Msg
ID. During playing, the HOST can pause playback by setting Pause (bit 8) to 1 and resume playing from the same
point by clearing that bit. Line monitoring will continue during pause. To fast playback a recorded message, set Fast
Play (bit 11) to 1 and the playing speed will be up to 33%.
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MX93032
To delete and stop the playing message, the HOST can set Del Mark (bit 7) on Play command. After being tagged a
"Del Mark" the marked message is not really deleted until a Real Del (Delete Message mode bit 8) is set. The Real Del
command not only deletes the messages that have been tagged a "Del Mark" but also changes the status of those
ICMs that have been pla yed to old. The ICMs that ha ve not been play ed before are regarded as "new". After Real Del
is issued, all new/old ICM Msg IDs will be rearranged.
For the HOST, it is used to issue the Real Del after the user terminates the manner of playback.
The response word contains the information of tones detected from the line, playing time spent (bit 8-15) and End of
play flag (bit 6), which indicates the end of the current message. When the Pla y End bit is 1, the MX93032-M1 stops
playback.
The MX93032-M1 will terminate Play mode when Stop bit or Del Mark bit is set to 1 on Play command.
MESSAGE ST ATUS
In this mode, there are 6 request codes for the HOST to get message information;
1. Get the number of personal recorded messages (request code = 0)
2. Get the number of personal new messages (request code = 1)
3. Get the number of personal old messages (request code = 2)
4. Get the available recording time with unit of second (request code = 3)
5. Get the number of total recorded messages (request code = 8)
The result will be reported in the response word.
DTMF GENERA TOR
In this mode, up to double tones can be generated by the MX93032-M1. The tone levels and frequencies are programmable and controlled by the HOST. The DTMF Gener ator command defines the output gains in bit 0-3 for the 1st tone,
and bit 4-7 for the 2nd tone. Each tone can be programmed from 3 dB (gain code 0000) to -25 dB (gain code 1110) with
2 dB resolution. For DSP mode, the frequencies are defined in the variables BUF1 and BUF2. For MCU mode, three
steps of commands should be issued, first, DTMF sent and signal Gain should be set, following the corresponding
two frequencies should be specified. The frequency code and its frequency represented is according to the f ollowing
relationship :
frequency code = desired frequency (Hz) * 8.19
f(n) = 32767 * cos (2*pi*f_code*n/(8000*8.19))
where f_code is the input frequency code, n is sequence index and 8000 is the sampling rate
For single tone, Codec outputs the signal s(n) :
s(n) = gain * f(n)
For dual tone, Codec outputs the signal s(n) :
s(n) = 0.5 * (gain1*f1(n) + gain2*f2(n))
To generate a single tone, the gain code of the other tone should be set to 1111. The MX93032-M1 star ts tone
generation only after receiving the start command.
The MX93032-M1 will terminate DTMF Generator when Stop bit is set to 1 on DTMF Generator command.
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MX93032
LINE MONITOR
In this mode the MX93032-M1 monitors the telephone line signal for the detection of DTMF, Call Progress Tone, V O X,
and/or Continuous Tone. The MX93032-M1 keeps monitoring the line until Stop bit is set to 1.
The MX93032-M1 returns to the HOST a response word that reflects the flag of Call Progress Tone, VO X, Continuous
Tone and the index of DTMF signal that has been detected :
INDEX DTMF CODE INDEX DTMF CODE
CAS DTMF CAS DTMF
0 0000 No T one 0 1001 9
0 0001 1 0 1010 *
0 0010 2 0 1011 0
0 0011 3 0 1100 #
0 0100 4 0 1101 A
0 0101 5 0 1110 B
0 0110 6 0 1111 C
0 0111 7 1 1111 D
0 1000 8 1 0000 CAS TONE
The MX93032-M1 will terminate Line Monitor mode when Stop bit is set to 1 on Line Monitor command.
DELETE MESSAGE
This mode provides an immediate way to delete messages as follows;
1. To delete a specified message, set its Msg ID in bit 0-6 and clear bit 11, 10 and 7 to zero.
2. T o delete a specified ne w ICM, set Del New Msg (bit 10) to 1, give the New Msg ID in bit 0-6, clear bit 11, 7 to z ero.
3. To delete all old ICM, set Del All Old (bit 7) to 1 and clear bit 11, 10 to zero. (Bit 0-6 is ignored)
4. T o erase the "Del Mark" from a specified ICM ("Del Mark" is a tag set on Play command f or deletion), set Del Mark
Clr (bit 11) to 1, give the Msg ID in bit 0-6 and clear bit 7 to zero .
SET CURRENT TIME/V OICE PROMPT/SILENCE THRESHOLD
In this mode the HOST can set the current time to the timer clock of the MX93032-M1. The time inf ormation includes
second, minute, hour and week. The timer in the MX93032-M1 will be used to stamp time and data to the recorded
message.
1. To set second, put the data in bit 0-7 and use request code (bit 8-11) 0000.
2. To set minute, put the data in bit 0-7 and use request code (bit 8-11) 0001.
3. To set hour, put the data in bit 0-7 and use request code (bit 8-11) 0010.
4. To set week, put the data in bit 0-7 and use request code (bit 8-11) 0011.
5. To set voice prompt configuration, put the selection data in bit 0-1 and use request code (bit 8-11) 0110.
6. To set silence threshold level, put the data in bit 0-3 and use request code (bit 8-11) 0111.
7. T o set output port OPT0-7, put data in bit0-7(Request Code=0100)
8. T o set codec MX93002 registers in bit10-8 and put data in bit0-7(Request Code=1xxx)
9. To write link index and data in bit0-7(Request Code=0101), refer to mode10 to specify Msg. ID .
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