Wavecom WISMO Quik Q2406 Customer Design Manuallines
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WM_PRJ_Q2400_PTS_005 -00718th January 2006Confidential©All rights reservedPage: 18 / 51This document is the sole and exclusive property of WAVECOM. Not to bedistributed or divulged without prior written agreement.Typical Implementation:Figure 5: Example of keyboard implementation2.2.5 Main serial link (UART1)A flexible 6-wire serial interface is available complying with V24 protocolsignaling but not with V28 (electrical interface) due to a 2.8 Volts interface.The signals are:• TX data input (CT103/TX),• RX data output (CT104/RX),• Request To Send input (CT105/RTS),• Clear To Send output (CT106/CTS),• Data Terminal Ready input (CT108-2/DTR),• Data Set Ready output (CT107/DSR).Note: the WISMO Quik Q24x6 module is a DCE (Data CommunicationEquipment).The Q24x6 sub-series has been designed to allow a certain flexibility in the useof the serial interface signals. However, the use of TX, RX, CTS and RTS signalsis mandatory which is not the case for DTR, DSR, DCD and RI signals which canbe left disconnected if not used.In particular, it is necessary to use RTS and CTS for hardware flow control inorder to avoid data corruption during transmission.The rising time and falling time of the reception signals (mainly CT103) have tobe less than 200 ns.The 2 additional signals are Data Carrier Detect (CT109/DCD) and Ring Indicator(CT125/RI). |
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