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43755_user_guide
Table 5: DC Power Input Specifications
Main Input Voltage - Range
Main Input Voltage – Nominal
Main Input Voltage – Ripple
Peak Input Current (maximum)
Main Input Active Power (average)
Main Input Standby Power (average)
4.2 Control/Digital Audio (DPL bus) Interface
4.2.1 Control/Digital Audio Interface Signal
Descriptions
The control/digital audio interface enables peripherals such as hand-
sets and SIM card readers to be interfaced to the 9522A LBT. The
interface utilises an Iridium Proprietary communication bus not
detailed in this fact sheet. Details can be made available after appro-
priate Non-disclosure Agreements and /or License Agreements are
executed.
4.3 RS232 Data Interface
4.3.1 RS232 Data Signal Descriptions
The RS232 data interface is comprised of eight standard RS232
data, control, and status signals plus a ground level signal reference.
This interface allows a connected Data Terminal Equipment (DTE) to
utilize the 9522A LBT's modem functionality via AT command con-
trol. A 3-wire RS232 Data minimal interface may also be implement-
ed however the 9 wire interface offers better control and is the rec-
ommended implementation.
4.3.2 Autobaud
The Daytona default is for autobaud to be enabled. Autobaud will
occur on the following characters 'a', 'A', CR (carriage return).
Autobaud will also occur on the escape sequence character, provid-
ed this is an odd number character. Normally this is set to '+' in reg-
ister S2 see AT Command Reference for details.
4.4 Analog Audio Interface
4.4.1 Analog Audio Interface Signal Descriptions
The analog audio interface is comprised of the analog audio input
and output signals referenced to the 0V signal ground as summa-
rized in Table 6 below.
Table 6: Analog Audio Interface Signal Descriptions
Signal Name
MIC_AUD (pin 15)
SPKR_AUD (pin 5)
0V (pin 14, 23 and 25)
4.5 SIM Interface
An integrated SIM chip reader is provided on the 9522A LBT. An
external SIM card reader may also be interfaced as a peripheral to
the 9522A LBT via the DPL bus (control/audio interface). A SIM card
in the external reader will take precedence over the SIM chip in the
integrated connector when both are present.
2/1/05
Parameter
Analog audio input to LBT
Analog audio output from LBT
Signal ground
5:00 PM
Page 9
Value
+4.0 VDC to +4.8 VDC
4.4VDC
40 mVpp
2.5 A @ 4.4 VDC
2000 mW
550 mW
Signal Description
6
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