NAVIOR-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
