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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CDCE72010RGCT датащи(PDF) 18 Page - Texas Instruments |
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CDCE72010RGCT датащи(HTML) 18 Page - Texas Instruments |
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18 / 73 page  SPI CONTROL INTERFACE Bit0 Bit1 …… Bit29 Bit30 Bit31 SPI_CLK SPI_MOSI SPI_LE t1 t2 t3 t4 t5 t6 t7 Bit30Bit31 SPI_CLK SPI_MOSI SPI_MISO SPI_LE Bit0Bit1 Bit2 t2 t3 t6 t7 t8 CDCE72010 SCAS858A – JUNE 2008 – REVISED JULY 2009.............................................................................................................................................................. www.ti.com The serial interface of the CDCE72010 is a simple bidirectional SPI interface for writing and reading to and from the registers of the device. It consists of four control lines: SPI_CLK, SPI_MOSI, SPI_MISO, and SPI_LE. There are twelve 28-bit wide registers that can be saved to the EEPROM on-chip, and one status register that is a read only register. Those registers can be addressed by the four LSBs of a transferred word (bit 0, 1, 2, and bit 3). Every transmitted word must have 32 bits, starting with LSB first. Each word can be written separately. The transfer is initiated with the falling edge of SPI_LE; as long as SPI_LE is high, no data can be transferred. During SPI_LE low, data can be written. The data has to be applied at SPI_MOSI and has to be stable before the rising edge of SPI_CLK. The transmission is finished by a rising edge of SPI_LE. Figure 11. Timing Diagram for SPI Write Command Figure 12. Timing Diagram for SPI Read Command 18 Submit Documentation Feedback Copyright © 2008–2009, Texas Instruments Incorporated Product Folder Link(s): CDCE72010 |
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