FEBL7731-02-02
1
Semiconductor
User’s Manual for
MSM7731-02 Evaluation Board
- 1 -
MSM7731-02 EVALUATION KIT
This kit contains one Evaluation Board (10.5
×
7 inches), one MSM7731-02GA LSI, and this User’s
Manual.
1.
GENERAL DESCRIPTIONS
This is a user’s manual for OKI Noise/Echo Canceler LSI, MSM7731-02. The evaluation board is
designed for your ‘turn-key’ evaluation of the MSM7731-02 with the following features.
1.1
LSI Socket and MSM7731-02GA LSI
1.2
Speaker Amplifier LSI (LM4861 manufactured by National Semiconductor)
This enables a direct connection to a speaker with ease.
1.3
Microphone Input Circuit
This enables a direct connection to a microphone with ease.
1.4
Single 12 V Power Supply Pin 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 3 V power supply is applied to the
MSM7731-02 and +5 V is to the LM4861.
1.5
Various Test Pins
Test pins are mounted on the PCB for the connection to an external telephone handset, microcontroller,
and digital interface for easy evaluation in the final application environment.
1.6
Various DIP Switches
DIP switches are mounted on the PCB for the evaluation of the Pin Control Mode of the MSM7731-02.
1.7
Various Toggle Switches
Toggle switches are mounted on the PCB for the evaluation of the MCU Interface Mode of the
MSM7731-02.
1.8
Various Mini-Jacks
Mini-jacks are mounted on the PCB for connecting a speaker and microphone on the near-end and an
external handset toward the far-end.
