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LTC1091C датащи(PDF) 17 Page - Linear Technology |
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LTC1091C датащи(HTML) 17 Page - Linear Technology |
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17 / 32 page ![]() 17 LTC1091/LTC1092 LTC1093/LTC1094 S APPLICATI I FOR ATIO MICROWIRE is a trademark of National Semiconductor Corp. Table 1. Microprocessors with Hardware Serial Interfaces Compatible with the LTC1091/LTC1092/LTC1093/LTC1094 PART NUMBER TYPE OF INTERFACE Motorola MC6805S2, S3 SPI MC68HC11 SPI MC68HC05 SPI RCA CDP68HC05 SPI Hitachi HD6305 SCI Synchronous HD63705 SCI Synchronous HD6301 SCI Synchronous HD63701 SCI Synchronous HD6303 SCI Synchronous HD64180 CSI/O National Semiconductor COP400 Family MICROWIRE TM COP800 Family MICROWIRE/PLUS NS8050U MICROWIRE/PLUS HPC16000 Family MICROWIRE/PLUS Texas Instruments TMS7002 Serial Port TMS7042 Serial Port TMS70C02 Serial Port TMS70C42 Serial Port TMS32011* Serial Port TMS32020 Serial Port *Requires external hardware 5. Microprocessor Interfaces The LTC1091/LTC1092/LTC1093/LTC1094 can interface directly (without external hardware) to most popular microprocessor (MPU) synchronous serial formats (see Table 1). If an MPU without a dedicated serial port is used, then three or four of the MPU’s parallel port lines can be programmed to form the serial link to the LTC1091/ LTC1092/LTC1093/LTC1094. Included here are one serial interface example and one example showing a parallel port programmed to form the serial interface. 1091/2/3/4 F02 CLK START MSBF B9 B8 • • • PROCESSOR MUST RELEASE DATA LINE AFTER 4TH RISING CLK AND BEFORE THE 4TH FALLING CLK MPU CONTROLS DATA LINE AND SENDS MUX ADDRESS TO LTC1091 LTC1091 TAKES CONTROL OF DATA LINE ON 4TH FALLING CLK SGL/ DIFF ODD/ SIGN CS DATA (DIN/DOUT) 12 MSBF LATCHED BY LTC1091 34 LTC1091 CONTROLS DATA LINE AND SENDS A/D RESULT BACK TO MPU Figure 2. LTC1091 Operation with DIN and DOUT Tied Together |
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