MAS9191EB MAS, MAS9191EB Datasheet - Page 5

• Manufacturer Part Number: MAS9191EB
• Description: EVALUATION BOARD
• Manufacturer: MAS

CONNECTOR DESCRIPTION
Connector name
EXTMIC
Battery
CM1
CM2
CM3
CM4
CM5
MIC
S1
T2
T3
T4
T5
J1
J2
NiCd Battery or external DC power supply capable of driving at least 200 mA current is
connected to battery input.
ON/OFF power switch for MAS9129 voltage regulators.
This jumper is normally closed, but can be opened to use an external current meter to
measure the power consumption of the digital section.
This jumper is normally closed, but can be opened to use an external current meter to
measure the power consumption of the analog section.
The microphone is normally connected to this connector. See the microphone function.
The internal/external microphone select switches.
Use jumper to enable regulator 2.
BNC-type connector for external microphone source.
MICOUT signal is the output from the section which contains the following blocks: Filter F8,
Gain Control GC3 and Filter F9. The source for the signal is either from SGND, Microphone
amplifier A6, EXTMIC input or from DTMF generator.
COUT is the compressor output signal. The compressor and all the blocks before T2 can be
measured by using this test point.
LPFIN test point can be used as an output to measure gain controls GC4 and GC5, the filter
F10 and all the blocks before T3.
TAUDOUT is the output from the TX audio block.
Pin
B+
B-
1
2
1
2
1
2
1
2
3
4
1
2
1
2
1
2
1
2
Function
Positive supply voltage from 3.4 V to 9.0V DC.
Ground.
Regulator 1 output.
VDD input.
Regulator 2 output.
VDD input.
Microphone input.
Ground.
Microphone amplifier feedback signal. Connect to pin 3 to use the mounted
microphone. Otherwise, connect the external microphone circuit feedback
signal to this pin.
Microphone amplifier input. Connect this to pin 4 to use the mounted
microphone. Otherwise, connect the external microphone output signal to this
pin.
Feedback signal input for the assembled microphone circuit.
Microphone output signal for the assembled microphone circuit.
External microphone input.
Ground.
VDD from regulator 2.
MASVDD. Power input for MAS9191A. Current measurement point.
Battery and charging voltage output.
Power input for MAS9129. Current measurement point.
VDD from regulator 2.
Power input for MS8323. Current measurement point.
DA9191EB.006
June 30,1997
5