MSM9800 View Datasheet(PDF) - Oki Electric Industry
Part Name
Description
Manufacturer
MSM9800 Datasheet PDF : 15 Pages
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1Semiconductor
FEBL9800-03
MSM9800/9836 EVA Board
CPU/STD Selector Switch:
To select either CPU (MCU IF) mode or Stand-alone mode.
CPU side: The board operates in MCU IF mode.
STD side: The board operates in Stand-alone mode.
This switch is functional only when the EXT/INT switch is set to the INT side. (When
being set to the EXT side, you can control this function via No. 4 pin of 20-pin connector.)
Amplifier Selector Switch
INTAMP/EXTAMP Selector Switch:
To select either INTAMP (on-board amplifier) or EXTAMP (external amplifier)
INTAMP: Enables to use on-board amplifier (MSC1157) to drive a speaker. Use the on-board volume
control to adjust sound level.
EXTAMP: Enables to use an external amplifier to drive a speaker. You can adjust sound level with
variable voltage input to the on-board VREF check pin. When the VREF pin is left open,
output is at the maximum level because of a pull-down resistor built in the physical device.
Address Selector Switch and Phrase Selector/Trigger Key Pad for Stand-alone Operation
Address Selector Switch for Stand-alone Operation:
• For MSM9802/03/05
0h to 7h selected with this switch are equivalent to binary data input to the A2 to A0 pins when a target
device is used in stand-alone mode.
• For MSM9836
0h to 7h selected with this switch are equivalent to binary data input to the I6 to I3 pins.
Phrase Selector/Trigger Key Pad for Stand-alone Operation:
• For MSM9802/03/05
Pushing a 0 to 7 key causes to start a phrase that corresponds to 0 to 7 of SW2 to SW0.
• For MSM9836
Pushing a 0 to 7 key causes to start a phrase that corresponds to 0 to 7 of I2 to I0.
RST Key:
Reset switch
The figure in the next page shows operation flow explaining how to start a phrase both in EXT mode and INT
mode.
Sound Level Control
Volume control
Turn right to increase sound level and turn left to decrease the level.
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