Oki MSM7731-02 User Manual Download Page 2

FEBL7731-02-02

NOTICE

1.

The information contained herein can change without notice owing to product and/or technical
improvements. Before using the product, please make sure that the information being referred to is up-to-
date.

2.

The outline of action and examples for application circuits described herein have been chosen as an
explanation for the standard action and performance of the product. When planning to use the product,
please ensure that the external conditions are reflected in the actual circuit, assembly, and program designs.

3.

When designing your product, please use our product below the specified maximum ratings and within the
specified operating ranges including, but not limited to, operating voltage, power dissipation, and operating
temperature.

4.

Oki assumes no responsibility or liability whatsoever for any failure or unusual or unexpected operation
resulting from misuse, neglect, improper installation, repair, alteration or accident, improper handling, or
unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the
specified maximum ratings or operation outside the specified operating range.

5.

Neither indemnity against nor license of a third party’s industrial and intellectual property right, etc. is
granted by us in connection with the use of the product and/or the information and drawings contained
herein. No responsibility is assumed by us for any infringement of a third party’s right which may result
from the use thereof.

6.

The products listed in this document are intended for use in general electronics equipment for commercial
applications (e.g., office automation, communication equipment, measurement equipment, consumer
electronics, etc.). These products are not authorized for use in any system or application that requires
special or enhanced quality and reliability characteristics nor in any system or application where the failure
of such system or application may result in the loss or damage of property, or death or injury to humans.
Such applications include, but are not limited to, traffic and automotive equipment, safety devices,
aerospace equipment, nuclear power control, medical equipment, and life-support systems.

7.

Certain products in this document may need government approval before they can be exported to particular
countries. The purchaser assumes the responsibility of determining the legality of export of these products
and will take appropriate and necessary steps at their own expense for these.

8.

No part of the contents contained herein may be reprinted or reproduced without our prior permission.

Copyright 2000 Oki Electric Industry Co., Ltd.

Summary of Contents for MSM7731-02

Page 1: ...FEBL7731 02 02 User s Manual for MSM7731 02 Evaluation Board Oki Electric Industry Co Ltd Ver 2 0 February 2000 1...

Page 2: ...strial and intellectual property right etc is granted by us in connection with the use of the product and or the information and drawings contained herein No responsibility is assumed by us for any in...

Page 3: ...1 11 Spare Area for Additional Amplifier 2 1 12 LED Indicator 2 1 13 On board Crystal 2 1 14 Measurement Location for External Oscilloscope 2 2 BOARD SCHEMATICS 3 3 FUNCTIONAL DESCRIPTIONS 3 3 1 Test...

Page 4: ...to Set Cancellation Echo Delay Time 11 4 6 1 Single EC Mode Acoustic Echo Cancellation Mode 11 4 6 2 Dual EC Mode Acoustic and Line Echo Cancellation Mode 12 4 7 How to Set Noise Cancellation Levels 1...

Page 5: ...and Ground Pin TP1 and TP2 The 12 V power supply is suitable for the evaluation in car environment as it is available for a cigarette lighter adapter and battery of an automobile In the board the sin...

Page 6: ...s an option by using the area of U15 1 12 LED Indicator On board LEDs are used for the confirmation of the register contents 1 13 On board Crystal The 19 2 MHz crystal is equipped on the board An osci...

Page 7: ...the evaluation board consists of external microcontroller interface pins When you want to evaluate your microcontroller connect the appropriate pins of the microcontroller to these pins When the micr...

Page 8: ...ed when all the switches are set to ON 3 3 Toggle Switch SW Toggle switches are used for the register setting in the on board register mode and external MCU mode SW1 and SW10 are also used in the pin...

Page 9: ...o Figure 3 1 of this user s manual 3 5 Variable Resistor RV 3 5 1 RV1 RV1 is a variable resistor to control the input gain from a microphone through the J1 MIC mini jack The MIC jack is connected to t...

Page 10: ...er to Table 2 2 for details 1 CLKSEL External clock mode Internal clock mode 2 ECSEL Single EC mode Dual EC mode 3 MCUSEL MCU interface disabled MCU interface enabled 4 PCMSEL law PCM mode 16 bit line...

Page 11: ...B 0 dB 0 1 6 dB 6 dB 1 0 12 dB 12 dB 1 1 18 dB 18 dB Table 2 4 Transmitting and Receiving Gain Adjustment RPAD4 RPAD3 RPAD2 RPAD1 TPAD4 TPAD3 TPAD2 TPAD1 Level 0 1 1 1 0 1 1 1 21 dB 0 1 1 0 0 1 1 0 18...

Page 12: ...et for settings of DSW1 5 DSW 2 2 DSW2 5 DSW 2 7 DSW3 and DSW5 7 Set all the switches of DSW6 to ON 8 Connect TP3 to the cellular phone when the digital line interface is selected Connect TP5 or J2 an...

Page 13: ...escription of the MSM7731 02 Data Sheet for setting of DSW2 5 SYNCSEL 3 Set all the switches of DSW6 to OFF 4 Set DSW1 DSW2 other than DSW2 1 DSW2 5 DSW3 DSW4 and DSW5 to 0 5 Connect TP3 to the cellul...

Page 14: ...L Set to 1 Set to 0 Set to 0 DSW2 4 PCMSEL a Analog I F Mode Set to 0 b Digital I F Mode Setting at your choice Set to 0 Set to 0 DSW2 5 SYNCSEL Setting at your choice Setting at your choice Setting a...

Page 15: ...nts of the register is displayed on LED2 to LED9 for confirmation LED2 to LED9 correspond to B0 to B7 of Control Registers CR respectively 4 6 How to Set Cancellation Echo Delay Time 4 6 1 Single EC M...

Page 16: ...ues of cancellable echo delay time are 44 ms and 15 ms respectively In order to change the default values use the MCU mode using the external microcontroller or MCU mode using the on board register in...

Page 17: ...er 4 6 1 of this manual Table 6 1 Noise Canceler Address Noise Canceler Address 1 Noise Canceler Address 2 Data to be written Noise Canceler Mode 01C8h 01C2h As per Table 6 2 Table 6 2 Noise Cancellat...

Page 18: ...4 Level tuning of the path from MIN to SP with a cellular phone connected STEP 5 Level tuning of the path from MIC microphone to MOUT with a cellular phone connected and control of voice quality 5 2...

Page 19: ...output by using a single tone a Maintain the previous PADs for controlling the echo canceler noise canceler and transmit receive gain as set in STEP 1 b Connect the audio analyzer HP made 8903B to th...

Page 20: ...0 to disable NCPAD 7 AATT Set this switch to 0 to enable the acoustic attenuator 8 AGC Set this switch to 0 to enable the acoustic gain controller c Enable the communication between the far end cellul...

Page 21: ...nd level control procedure is complete 6 PRECAUTIONS 1 The clock outputs SYNC BCLK are disabled during the power down reset mode Since the on board MCU control circuit is activated by the clock signal...

Page 22: ...4 SW3 SW2 D7 D6 D5 D4 D3 D2 D1 D0 SW17 SW16 SW15 SW14 SW19 SW18 SW1 R W SET SW1 PDNRST RST LED2 LED3 LED4 LED5 LED6 LED7 LED8 LED9 D7 D6 D5 D4 D3 D2 D1 D0 RV2 RV5 RV1 RV4 CX15 U15 R18 R19 C26 Addition...

Page 23: ...1 SB1 SB1 SB1 SB1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 DSW2 DSW2 DSW3 DSW3 DSW3 DSW3 DSW3 DSW4 DSW4 DSW4 DSW4 DSW4 DSW5 DSW5 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 SB1 MSM7731 U1 32 31...

Page 24: ...8 1 2 3 4 5 6 7 74HC02 U7 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 74HC161 U5 VCC CK1 D C B A SI QH 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 S L CLK E F G H QH GND 74HC165 U9 14 13 12 11 10 9 8 1 2 3 4 5...

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