AVIOR-24S ™ CHAPTER II
Hardware Integration
32
NAVIOR-24S ™ Revision V1.00 20.05.2008
General Description
NAVIOR-24S provides asynchronous serial port. NAVIOR-24S module is designed as a DCE
(Data Communication Equipment), following the traditional DCE-DTE (Data Terminal Equipment)
connection, the module and the client (DTE) are connected through the following signal (as Figure
II-1 shows). Supports baud rate is from 1200 bps up to 115200bps.
Figure II-1 – Interface of serial port
Serial port
Port/TX @ Client sends data to the RX signal line of module
Port/RX @ Client receives data from the TX signal line of module
All pins of serial port have 8mA driver, the logic levels are described in Table II-1
Table II-1 - Logic levels of serial port pins
Parameter Min Max Unit
Logic low input 0 0.4*VCC V
Logic high input 0.7 *VDD_EXT 3.3*VCC +0.3 V
Logic low output 0 0.4 V
Logic high output VCC -0.2 VCC V
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