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跟著信息技術與網絡技術的飛速發展,信息交互運用業務給人類日子帶來更多的便當,信息終端表現出巨大的市場潛力。但是由于終端用戶環境不同,用戶信息交互辦法可能不同,現在常用的有IP辦法、FSK辦法以及無線通訊辦法等。為了可以行進終端市場競爭力,削減系統開發本錢投入,通訊模塊與終端程序獨立規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,依據此模塊,用戶與業務途徑之間進行FSK信息交互,相對于終端來說就是簡略的串口通訊。
1 FORCE SYS68K SASI-1441介紹
ATmega48是依據AVR增強型RISC(精簡指令集)結構的、低功耗的8位CMOS微控制器。微控制用具有可控制的上電復位和可編程的掉電檢測電路、通過標定的片內RC振蕩器、片表里18個接連源和5種休眠辦法。由于其先進的指令集以及單時鐘周期指令執行時間,ATmega48的數據吞吐率高達1 MIPS/MHz,作業速度比一般的單片機高出10倍,然后可以緩解系統在功耗和處理速度之間的敵視。
其片內集成了4 KB的系統內可編程Flash、256字節的EEPROM、512字節的SRAM。其外設具有可編程的串行USART接口、可作業于主機/從機辦法的SPI串行接口;存在2個具有獨立預分頻器和比較器功用的8位守時/計數器和1個具有預分頻器、比較功用和捕捉功用的16位守時/計數器、具有獨立片內振蕩器的可編程看門狗守時器等。ATmega48/88/168芯片硬件電路可以完全兼容,完全可以依據軟件實踐需求靈敏選擇AVR芯片,地便當系統的開發與研制。
2 FORCE SYS68K SASI-1441簡介
CMX865是CML公司新出的一款DTMF編/解碼器/FSK調制解調器復合IC芯片,它選用單個高速串行總線控制,與大多數串行接口兼容。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;
◆ 集成振鈴檢測功用,支撐語音勘探功用。
3 FORCE SYS68K SASI-1441硬件規劃
圖1為串口轉FSK通訊模塊電路。系統主要以AVR單片機ATmega48芯片和CMX865調制/解調芯片為硬件架構,ATmega48芯片運用CBUS總線對CMX865芯片進行控制操作,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/發送FSK數據。CMX865芯片的時鐘信號、片選信號、照料應對數據信號、接收控制數據信號別離與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CMX865芯片進行控制。
Force SPARC/CPU-10/12?8-1251 SPARC/CPU-10/12?8-1251H1 VME
Force SPARC CPU-5VT VME Board
FORCE SPARC CPU-3CE/16-40-1 P/N 501015 Network #B89
Force Sparc CPU-3CE/16 VME Processor Board
Force Sparc CPU-10/32 VME SBC computer board
Force Sparc CPU-2CE/16 VME SBC computer board with GPIB
Force CPCI-550 sparc/cpci-550
Force SPARC CPU-2s/32 VME SI 600-11573-201
FORCE SPARC CPU-5V CPU-5V/64-100-2 VME MAINFRAME. CARD
Force SPARC CPU-3CE/16 Network 501015 Board #F15
FORCE SPARC CPU-3CE/32-40-1 P/N 501016 Network #B90
FORCE SPARC CPU-5V CPU-5V/64-100-2 VME MAINFRAME. CARD
Force Sparc CPU-20VT VME SBC computer board
Mercury Themis Force VME Sparc CPU Military Avionics
Force Sparc/CPU-10/12?8-51-1 B
FORCE SPARC CPU-3CE/8 NETWORK
FORCE SPARC CPU-10/9U BOARD
Force SPARC CPU-3CE/16-40-1 501015 Network Board #B61
MOTOROLA FORCE SPARC CPU-5CE/16 VME SBUS MAINFRAME. CARD
Force SPARC CPU-3CE/16 Network 501015 Board #F16
Force Sparc/mem-50 213802 RevAA Memory Stick #F37
Force SPARC CPCI-523G 256-300-4-2 CompactPCI Card
Force Sparc/CPU-10//6?4-40-1
CPU-2CE/16
CPU-3CE/16
CPU-3CE/32-40-1
CPU-3CE/64-40-1
CPU-5CE/16-85-2
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
CPCI-731
CPCI-761
IOBP-731
PMC860-40-E1-75
SCSI-BP4
IOBP-731
IOBP-10
IBC-20-1
SYS68K/PIO-1
CPCI-910
CPU-5V/64-110-2/C13
Force SYS68K CPU-30Lite
FORCE SYS68K DRAM VME BOARD MVME MAINFRAME. MOTOROLA
Force SYS68K/CPU-6 880-12537-101.A?2 LAM 810-17034-300-1
FORCE SYS68K SRAM-4A VME BOARD MVME MAINFRAME. MOTOROLA
Force SYS68K/CPU-6VB P/N 100611 LAM reseach 17034-3-C
FORCE SYS68K ISCSI-1 VME BOARD MVME MAINFRAME. MOTOROLA
FORCE COMPUTERS SYS68K CPU-6A
FORCE SYS68K CPU-2VF VME SINGLE BOARD COMPUTER MOTOROLA
FORCE SYS68K CPU-30BE/16 VME BOARD
Force SYS68K/SIO-2 P/N 310004
Force SYS68K CPU-33B/4 VME Board
Force SYS68K/SASI-1
FORCE CONTROL BOARD SYS68K ISI0-2/C2 (P/N 220062)
FORCE COMPUTER MODEL SYS68K SASI-1441 LAM REV A
FORCE COMPUTER CPU BOARD SYS68K CPU-1B NEW-NO BOX
Force SYS68K CPU30ZBE CPU-30ZBE CPU Module VMEbus VME
FORCE SYS68K CPU BOARD 310004 WORKING
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098
FORCE COMPUTERS SYS68K/CPU-6VA USPP SYS68KCPU6VA CIRCUIT CARD
BUS TRONIC FORCE SYS68K MAINFRAME. BOARDS NICE LOT
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
Force SYS68K ISIO-1 Serial I/O Board
BioRad SYS68K CPU-30ZBE FORCE 25MHZ VME CPU BOARD
FORCE COMPUTER VME BOARD MODEL SYS68K REV C
FORCE SYS68K ISIO-2 MODULE ASSY
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098 PN: 600-1
Force SYS68K/CPU-30BE SYS68K/CPU-30BE?/16/C2 VME Module
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098
Force SYS68K/ISIO-1FP I/O Controller Dual Board w Cable
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
FORCE PROCESSOR BOARD Model SYS68K ASCU-2
Force SYS68K/ISIO-2 I/O Controller Board PN: 310031
Force SPARC/CPU-10/12?8-1251 SPARC/CPU-10/12?8-1251H1 VME
A64520 Force Computers Sparc CPU-24VTF Board
Force CPCI-550 sparc/cpci-550
Force Sparc CPU-3CE/16 VME Processor Board
Force SPARC CPU-2s/32 VME SI 600-11573-201
FORCE SPARC CPU-5V CPU-5V/64-100-2 VME MAINFRAME. CARD
Force Sparc/CPU-10/12?8-51-1
FORCE SPARC CPU-5V CPU-5V/64-100-2 VME MAINFRAME. CARD
Force SPARC CPU-3CE/16-40-1 501015 Network Board #B61
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
Force Sparc/CPU-10//6?4-40-1
Force SYS68K/CPU-6 880-12537-101.A?2 LAM 810-17034-300-1
FORCE SYS68K CPU-2VF VME SINGLE BOARD COMPUTER MOTOROLA
Force SYS68K/CPU-6VB P/N 100611 LAM reseach 17034-3-C
FORCE SYS68K DRAM VME BOARD MVME MAINFRAME. MOTOROLA
Force SYS68K CPU-30Lite
FORCE SYS68K SRAM-4A VME BOARD MVME MAINFRAME. MOTOROLA
FORCE COMPUTERS SYS68K CPU-6A
FORCE SYS68K CPU-30BE/16 VME BOARD
FORCE SYS68K ISCSI-1 VME BOARD MVME MAINFRAME. MOTOROLA
Force SYS68K ISIO-1 Serial I/O Board
FORCE COMPUTER CPU BOARD SYS68K CPU-1B NEW-NO BOX
Force SYS68K CPU-33B/4 VME Board
Force SYS68K/SIO-2 P/N 310004
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
Force SYS68K/ISIO-1FP I/O Controller Dual Board w Cable
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