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跟著信息技術(shù)與網(wǎng)絡(luò)技術(shù)的飛速發(fā)展,信息交互運(yùn)用業(yè)務(wù)給人類日子帶來更多的便當(dāng),信息終端表現(xiàn)出巨大的市場(chǎng)潛力。但是由于終端用戶環(huán)境不同,用戶信息交互辦法可能不同,現(xiàn)在常用的有IP辦法、FSK辦法以及無線通訊辦法等。為了可以行進(jìn)終端市場(chǎng)競(jìng)爭(zhēng)力,削減系統(tǒng)開發(fā)本錢投入,通訊模塊與終端程序獨(dú)立規(guī)劃是較為志趣的解決方案。本文選用ATmega48芯片及CMX865芯片完畢FSK通訊模塊,依據(jù)此模塊,用戶與業(yè)務(wù)途徑之間進(jìn)行FSK信息交互,相對(duì)于終端來說就是簡(jiǎn)略的串口通訊。
1 SYS68K CPU30ZBE CPU-30ZBE8介紹
ATmega48是依據(jù)AVR增強(qiáng)型RISC(精簡(jiǎn)指令集)結(jié)構(gòu)的、低功耗的8位CMOS微控制器。微控制用具有可控制的上電復(fù)位和可編程的掉電檢測(cè)電路、通過標(biāo)定的片內(nèi)RC振蕩器、片表里18個(gè)接連源和5種休眠辦法。由于其先進(jìn)的指令集以及單時(shí)鐘周期指令執(zhí)行時(shí)間,ATmega48的數(shù)據(jù)吞吐率高達(dá)1 MIPS/MHz,作業(yè)速度比一般的單片機(jī)高出10倍,然后可以緩解系統(tǒng)在功耗和處理速度之間的敵視。
其片內(nèi)集成了4 KB的系統(tǒng)內(nèi)可編程Flash、256字節(jié)的EEPROM、512字節(jié)的SRAM。其外設(shè)具有可編程的串行USART接口、可作業(yè)于主機(jī)/從機(jī)辦法的SPI串行接口;存在2個(gè)具有獨(dú)立預(yù)分頻器和比較器功用的8位守時(shí)/計(jì)數(shù)器和1個(gè)具有預(yù)分頻器、比較功用和捕捉功用的16位守時(shí)/計(jì)數(shù)器、具有獨(dú)立片內(nèi)振蕩器的可編程看門狗守時(shí)器等。ATmega48/88/168芯片硬件電路可以完全兼容,完全可以依據(jù)軟件實(shí)踐需求靈敏選擇AVR芯片,地便當(dāng)系統(tǒng)的開發(fā)與研制。
2 SYS68K CPU30ZBE CPU-30ZBE簡(jiǎn)介
CMX865是CML公司新出的一款DTMF編/解碼器/FSK調(diào)制解調(diào)器復(fù)合IC芯片,它選用單個(gè)高速串行總線控制,與大多數(shù)串行接口兼容。CMX865的主要特征是:
◆ 供電電壓2.7~5.5 V,低功耗操作辦法;
◆ 支撐V.23、Bell202 FSK 1200 bps編碼/解碼;
◆ 集成高可靠性DTMF編碼器/解碼器;
◆ 集成振鈴檢測(cè)功用,支撐語(yǔ)音勘探功用。
3 SYS68K CPU30ZBE CPU-30ZBE硬件規(guī)劃
圖1為串口轉(zhuǎn)FSK通訊模塊電路。系統(tǒng)主要以AVR單片機(jī)ATmega48芯片和CMX865調(diào)制/解調(diào)芯片為硬件架構(gòu),ATmega48芯片運(yùn)用CBUS總線對(duì)CMX865芯片進(jìn)行控制操作,完畢FSK通訊。CMX865芯片的IRQN終端與CPU芯片的外部接連0(INT0)相連,保證軟件可以選用接連辦法接收/發(fā)送FSK數(shù)據(jù)。CMX865芯片的時(shí)鐘信號(hào)、片選信號(hào)、照料應(yīng)對(duì)數(shù)據(jù)信號(hào)、接收控制數(shù)據(jù)信號(hào)別離與ATmega48芯片的一般I/O接口引腳相連,CPU可以通過模仿口線辦法對(duì)CMX865芯片進(jìn)行控制。
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Force Sparc CPU-2CE/16 VME SBC computer board with GPIB
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Mercury Themis Force VME Sparc CPU Military Avionics
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CPU-2CE/16
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CPU-5CE/32-85-2
CPU-5CE/64-85-2
CPU-5TE/16-85-0
CPU-5V/64-100-2
CPU-5V/64-110-2
IOBP-10
CPU-8VT/64-170-2
CPU-20 Series
CPU-30BE
CPU-30ZBE
CPU-33XB
CPU-33XN
CPU-40B/16
CPU-40B/16-01
CPU-40B/16-02
CPU-40B/4
CPU-50/128-333-4-2
CPU-50/256-333-4-2
CPU-50GT/256-300-4-2
CPU-50GT/256-333-4-2
CPU-50T/256-300-4-2
CPU-50T/256-333-4-2
SCSI-BP4
CPU-60D/32/C3
6604E/16-200
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CPCI-761
IOBP-731
PMC860-40-E1-75
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IOBP-731
IOBP-10
IBC-20-1
SYS68K/PIO-1
CPCI-910
CPU-5V/64-110-2/C13
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FORCE PROCESSOR BOARD Model SYS68K ASCU-2
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A64520 Force Computers Sparc CPU-24VTF Board
Force CPCI-550 sparc/cpci-550
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Force SPARC CPU-2s/32 VME SI 600-11573-201
FORCE SPARC CPU-5V CPU-5V/64-100-2 VME MAINFRAME. CARD
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FORCE SPARC CPU-3CE/16-40-1 P/N 501015 Network #B89
Mercury Themis Force VME Sparc CPU Military Avionics
FORCE SPARC CPU-3CE/32-40-1 P/N 501016 Network #B90
FORCE SPARC CPU-10/9U BOARD
FORCE SPARC CPU-3CE/32-40-1 P/N 00157-001 Network #B91
MOTOROLA FORCE SPARC CPU-5CE/16 VME SBUS MAINFRAME. CARD
FORCE SPARC CPU-3CE/8 NETWORK
Force SPARC CPCI-523G 256-300-4-2 CompactPCI Card
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Force SYS68K/CPU-6 880-12537-101.A?2 LAM 810-17034-300-1
FORCE SYS68K CPU-2VF VME SINGLE BOARD COMPUTER MOTOROLA
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FORCE SYS68K DRAM VME BOARD MVME MAINFRAME. MOTOROLA
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Force SYS68K ISIO-1 Serial I/O Board
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Force SYS68K/SASI-1
FORCE SYS68K ISIO-2 MODULE ASSY
FORCE CONTROL BOARD SYS68K ISI0-2/C2 (P/N 220062)
FORCE COMPUTER VME BOARD MODEL SYS68K REV C
FORCE COMPUTERS SYS68K/CPU-6VA USPP SYS68KCPU6VA
FORCE COMPUTER MODEL SYS68K SASI-1441 LAM REV A B
FORCE SYS68K CPU BOARD 310004 WORKING
BUS TRONIC FORCE SYS68K MAINFRAME. BOARDS NICE LOT
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098 PN: 600-1
FORCE SYS68K/CPU-30BE?/8 REMOVED FROM BIORAD SYSTEM
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Force SYS68K/CPU-30BE SYS68K/CPU-30BE?/16/C2 VME Module
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
FORCE PROCESSOR BOARD Model SYS68K ASCU-2
Force SYS68K CPU30ZBE CPU-30ZBE CPU Module VMEbus VME
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098