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WM_PRJ_Q2686_PTS_001-010
June 30, 2009
Q2686 Wireless CPU
®
The rise and fall time of the reception signals (mainly CT103) must be less than
300 ns.
The maximum baud rate of UART1 is 921 kbit/s for the firmware provided in
the Open AT
®
Software Suite v2.
Recommendation:
The Q2686 Wireless CPU
®
is designed to operate using all the serial interface
signals. In particular, it is recommended to use RTS and CTS for hardware flow
control in order to avoid data loss during transmission.
For use with 5-wire serial interface
•
Signal: CT103/TXD1*, CT104/RXD1*, ~CT105/RTS1*, ~CT106/CTS1*
•
The signal ~CT108-2/DTR1* must be managed by following the V24
protocol signalling, if you want to use the slow idle mode.
•
Other signals and their multiplexes are not available.
•
Please refer to technical appendixes of AT commands User Guide [7] for
more information.
For use with 4-wire serial interface
•
CT103/TXD1*, CT104/RXD1*, ~CT105/RTS1*, ~CT106/CTS1*
•
The signal ~CT108-2/DTR1* must be configured at low level.
•
Other signals and their multiplexes are not available.
•
Please refer to technical appendixes in the AT commands User Guide [7]
for more information.
For use with 2-wire serial interface
•
This case is possible for connected external chip, but not recommended
(and forbidden for AT command or modem use)
•
The flow control mechanism has to be managed at the customer side.
•
CT103/TXD1*, CT104/RXD1*
•
The signal ~CT108-2/DTR1* must be configured at low level.
•
The signals ~CT105/RTS1*, ~CT106/CTS1* are not used, please
configure the AT command (AT+IFC=0,0 see AT command User Guide
[7]).
•
The signal ~CT105/RTS1* must be configured at low level.
•
Other signals and their multiplexes are not available.
•
Please refer to technical appendixes in the
AT commands User Guide
[7]
for more information.
