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No. 1288	Re: [140917-0001FE] Re: CSE-M53N	2014-10-21

Hello, This is Sollae systems support team. I misunderstood your second question. As I mentioned in the previous answer, Serial Rx buffer size of CSE-M53N is 2048byte. The RTS Signal is Active(="0") until the buffer is filled 3/4 of 2048byte. In other words, when buffer remains below 512byte, RTS signal is inactive(="1") If you have any other question, please do not hesitate to contact us again. Thank you. > Sollae Systems wrote: > ------------------------------------ > Hello, > > This is Sollae systems support team. > > > 1. Serial Rx buffer size : 2048 > Serial Tx buffer size : 4096 > > > 2. When you use UART RTS, RTS is LOW("0") Active signal. > It means that if CSE-M53N doesn'st use RTS/CTS, RTS signal should keep HIGH("1"), on the other hands when CSE-M53N use RTS/CTS, it might be LOW("0") Please refer to attached file. > > > 3. CTS is Input pin. "RTS" stands for Request to Send and "CTS" stand for Clear to Send. > Before receiving data from user device, CSE-M53N sends LOW signal to user device(CTS). > This process is to let the user device know that the module is ready to receive data. > > [cse-m53n] <----------------DATA-------------[user device] > RTS(pin#8) ----------------LOW--------------> CTS > > > > In this case, Before sending data to user device, User device sends signal to CSE-M53N > [cse-m53n] -----------------DATA------------> [user device] > CTS(pin#7) <---------------serial----------- RTS > > > If you have any other question, please do not hesitate to contact us again. > > Thank you. > > > > > > PM wrote: > > ------------------------------------ > > Hi, i have some question about CSE-M53N, respect to CST/RTS > > > > 1-What is the size of the buffers TX and RX? > > 2-The RTS signal, when is "1" and when is "0"? At determined amount of data on buffer? > > 3-When i put CTS to "1", the module complete the transmission of the byte in progress and stop? Or how works it? > > > > Thanks

Writer	Sollae Systems	Company