S42 Hardware User Guide
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 23 of 62
3.3.3
Baud Rate Deviation
The following table shows the deviation in percent of the standard data rates. The deviation
may be caused by the inaccuracy of the crystal oscillator or granularity of the baud rate
generator.
Baud
Rate
nominal
Baud
Rate
actual
Deviation
[%]
9600
9598
-0,02
14400
14401
0,01
19200
19208
0,04
28800
28777
-0,08
38400
38369
-0,08
57600
57554
-0,08
76800
76923
0,16
115200
115108
-0,08
230400
231884
0,64
250000
250000
0,00
460800
457143
-0,79
921600
921176
-0,05
Table 4: Deviation of Baud rates
Note: The total deviation of sender and receiver shall not exceed 2.5% to prevent
loss of data.
3.3.4
Dynamic I/O Signal Type Changes depending on the UICP
status
In order to allow customers to use the serial interface with the minimal signal count on the
one side and to reduce current consumption when using UICP on the other side, the
S42 FW supports the following dynamic I/O signal type changes depending on the
UICP activated resp. deactivated status.