Installation Instructions

LISA-U2 series - System Integration Manual
UBX-13001118 - R19 Early Production Information System description
Page 56 of 175
One-shot automatic frame recognition is supported and enabled in conjunction with the one-shot automatic
baud rate detection only: when the one-shot autobauding is active, the one-shot automatic frame recognition is
enabled overruling the frame format setting. The frame format recognition is performed once and then, after
the successful recognition of the frame format, the automatic frame recognition is disabled, as the automatic
baud rate detection.
One-shot automatic frame recognition is enabled by default, as the one-shot autobauding.
The following frame formats can be configured by AT command:
 8N1 (8 data bits, No parity, 1 stop bit), default frame configuration with fixed baud rate
 8E1 (8 data bits, even parity, 1 stop bit)
 8O1 (8 data bits, odd parity, 1 stop bit)
 8N2 (8 data bits, No parity, 2 stop bits)
 7E1 (7 data bits, even parity, 1 stop bit)
 7O1 (7 data bits, odd parity, 1 stop bit)
The 8N2 frame format cannot be automatically detected by one-shot automatic frame recognition.
The 8N1frame format, which is the default configuration with fixed baud rate, is described in the Figure 25.
D0 D1 D2 D3 D4 D5 D6 D7
Start of 1-Byte
transfer
Start Bit
(Always 0)
Possible Start of
next transfer
Stop Bit
(Always 1)
t
bit
= 1/(Baudrate)
Normal Transfer, 8N1
Figure 25: Description of UART default frame format (8N1) with fixed baud rate