User Guide

Iridium Communications Inc. Information Contained in this Guide
9602 SBD Transceiver Product Developers Guide is Subject to Change Without Notice
Revision 1.2 (DRAFT 2)
Iridium Communications Inc. Distribution of Guide Restricted
Proprietary & Confidential Information 24 to Product Developers Only
Figure 6 9602/9602N Typical Supply Current Profile
3.3 Serial Data Interface
The Serial data interface is used to both command the 9602/9602N and transfer user data to and from
the Transceiver. The 9602/9602N presents a 9-wire data port to the FA (Field Application), where the
interface is at 3.3V digital signal levels. With respect to this interface, the 9602/9602N behaves as a DCE
(Data Communication Equipment), and the FA behaves as a DTE (Data Terminal Equipment).
The terms “FA” and “DTE” are used interchangeably throughout this document; similarly for the terms
“9602” and “DCE”. Autobaud is not supported in 9602/9602N SBD Transceiver. The baud rate can be set
via the AT+IPR command. The default rate is 19200 bps.
3.3.1 9-Wire and 3-Wire Operation
By default, the serial interface operates as a 9-wire connection. Table 10 describes each of the signals,
where “input” means an input to the 9602/9602N, and “output” means an output from the 9602/9602N
SBD Transceiver.