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LZT 123 7589 R1A
14. USING THE DEVELOPER'S KIT
Jumper
Default
Description
ULD
To OUT
To enable analog audio microphone path ULD must
be connected to OUT using the jumper.
OUT
To ULD
To enable analog audio microphone path OUT must
be connected to ULD using the jumper.
DLD
To IN
To enable analog audio earpiece path DLD must be
connected to IN using the jumper.
In
To DLD
To enable analog audio earpiece path IN must be
connected to DLD using the jumper.
SYN
-
This is an output connection for the PCM
synchronisation signal from the radio device.
CLK
-
This is an output connection for the PCM clock signal
from the radio device.
BUZZER
Fitted
When fitted, this link enables the DK buzzer driver
circuitry.
Jumper
Default
Description
DSR
Fitted
Connects serial port flow control signal DSR between
UART connector X4 and radio device.
Note: DSR is a dual function signal from the radio
device. When this signal is being used for any other
purpose (e.g. Keypad or application specific through
X2 or X3), this jumper must be removed.
RI
Fitted
Connects serial port control signal RI between UART
connector X4 and radio device.
Note: RI is a dual function signal from the radio
device. When this signal is being used for any other
purpose (e.g. Keypad or application specific through
X2 or X3), this jumper must be removed.
DTR
Fitted
Connects serial port flow control signal DTR between
UART connector X4 and radio device.
Note: DTR is a dual function signal from the radio
device. When this signal is being used for any other
purpose (e.g. Keypad or application specific through
X2 or X3), this jumper must be removed.
CTS
Fitted
Connects serial port flow control signal CTS between
UART connector X4 and radio device.
Note: CTS is a dual function signal from the radio
device. When this signal is being used for any other
purpose (e.g. Keypad or application specific through
X2 or X3), this jumper must be removed.
RTS
Fitted
Connects serial port flow control signal RTS between
UART connector X4 and radio device.
Note: RTS is a dual function signal from the radio
device. When this signal is being used for any other
purpose (e.g. application specific I/O through X2 or
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