Ublox SARA-N2 Series, Руководство по системной интеграции

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SARA-N2 / N3 series - System integration manual
UBX-17005143 - R13 System description Page 27 of 95
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1.9.2 Secondary auxiliary UART interface
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The secondary auxiliary UART interface is not available on SARA-N2 modules.
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The secondary auxiliary UART interface is not supported by SARA-N3 “ 00 ” product version.
SARA-N3 series modules include the RXD_AUX and TXD_AUX pins as secondary auxiliary UART
interface.
The characteristics of the SARA- N3 modules’ secondary auxiliary UART interface are:
• Serial port with RS-232 functionality conforming to ITU-T V.24 recommendation [7]
•
It operates at V_INT level, with voltage value set as per external VSEL pin configuration
o
0 V for low data bit or ON state
o
V_INT , i.e. 1.8 V or 2.8 V, for high data bit or OFF state
• Data lines ( RXD_AUX as module data output, TXD_AUX as module data input) are provided
1.9.3 Additional UART interface
SARA-N2 series modules include the GPIO1 pin as additional UART interface, supporting:
• Diagnostic trace log
The characteristics of the SARA- N2 modules’ additional UART interface are:
• Serial port with RS-232 functionality conforming to ITU-T V.24 recommendation [7]
•
It operates at V_INT level, with voltage value set as per external VSEL pin configuration
o
0 V for low data bit or ON state
o
V_INT , i.e. 1.8 V, for high data bit or OFF state
• Data line ( GPIO1 as module data output) is provided
• Fixed baud rate: 921600 b/s
•
Fixed frame format: 8N1 (8 data bits, no parity, 1 stop bit)
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Provide a test point connected to the GPIO1 pin for diagnostic purpose.
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The trace diagnostic log is temporarily stopped when the SARA-N2 module is in deep-sleep mode.
SARA-N3 series modules include the RXD_FT and TXD_FT pins as additional UART interface,
supporting:
• Diagnostic trace log
• FW upgrades by means of the u-blox EasyFlash tool
The characteristics of the SARA- N3 modules’ additional UART interface are:
• Serial port with RS-232 functionality conforming to ITU-T V.24 recommendation [7]
• It operates at V_INT level, with voltage value set as per external VSEL pin configuration
o
0 V for low data bit or ON state
o
V_INT , i.e. 1.8 V or 2.8 V, for high data bit or OFF state
• Data lines ( RXD_FT as module data output, TXD_FT as module data input) are provided
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Provide test points to the RXD_FT and TXD_FT pins for diagnostic and FW update purposes.
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The trace diagnostic log is temporarily stopped when the SARA-N3 module is in deep-sleep mode.