一种基于TL16C554A的DSP多串口扩展方法

DSP多串口开发的一种方法TL16C554A是TI公司生产的异步通信芯片, 该芯片可在通信系统中的实时性要求较高时, 用来实现系统的高效多串口通信, 从而增强系统的通信接口控制能力。文中介绍了TL16C554A 的性能特点及与通信有关的寄存器, 给出了用TL16C554A 对DSP 器件TMS320LF2407A 多串口扩展的硬件电路以及通过TMS320LF2407A 初始化TL16C554A 的软件编程。262006DO- D7 DSP D0-D7OW: DSPA 3 A4/S:TL16C5544DSP TL16C554A /CSA /CSB /CSC /CSD DSPTL16C554 DSP /5/RD TL16C554AA0~A2CPLDCPLDWE/OR/74139YIONDSPY11NY12NaINY22DSP YDSP RDDSPNT174373DEND LATCHDSP HESET2 DSP TL 16C554ACOMPONENT 230vIoVs是SETRTDI下.1FTeH含露王正UTCL1GNDG工RBINpRo?L SSOpH3 CPLDTL16C554ATL16C554ATL16C 554A96001843AHzTL 6C554A,F正OTL16C554A N:o1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreservedhttp://www.cnki.netTL 16C 55DSP27COM BAUD HALL. set ooh://OUT + COM DllBSPLK #COM BAUD HALL *kCOM bAUd L9600, set och: //960OUT米+, COM DIHESPLK #COM DLAB Q*COM diab 1. set 8(H://B it7 1OUT* coM lcrSPLK # COM FMT NP 1 SB 8B,COM DLAB O. set 00://B it7 1OUT= + COM LCRSPLK#OOMF正OWD.COM NO NT. set 00;OuT* + COM FCRCOM YES INT. set Oh: /SPLK ohCM FMt nP isb 8B. set 03: /OUT=. COM M CR8SPLK #COM YES NTCOM FIFO CWD. set 07:// FIFoOUT> + COM ERCOM_ _MCR-AUXOUT2. set 08: //Aux Output2(1)CRCOM DLLB. set 0000H; //D iv Bor latch Low Byte9600TL16C554ACOM ER. set 0001H: //Interupt enab le r eg isterTM S320LF2407ACOM_DIHB. set 000lH; //Div sor Latch h ghByteCOM FCR. set 0002; // FIFO Con troI Reg is terCOM LCR. set 0003: / Line Control registerTMS320LF 240X DSPM].COM MCR. Set 0004H: //Moden Con uoIr eg isler2003MAR*, AROTMS320LF 240X DSPM].2002LAR ARO# 285H[3] TLlOC554A. A synchronoUs- (nn unical ins E len enILSPLK# CM NO Nt米[Z. Texas Inst nm ents 2001.OUT* + COM ERCPLDSPLK #COM DLAB_*2003OUT + COM lcr[5 Data Sheet of TMs320LF2407A- d sP con tro ler[ ziSPLK #COM BaUd L960QTex as Instnm en ts 200123)CPU5CPU)(cPU40V20VCPUCPUCPCPUCPUCPU)30V15V( 2)CPUFLFLCPUCPUCPU(4)CPU1][J200l8(1):9-11o1994-2011ChinaAcademicJournalElectronicPublishingHouse.Allrightsreservedhttp://www.cnki.net