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ZIOL2201 Scheda tecnica(PDF) 33 Page - Renesas Technology Corp |
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ZIOL2201 Scheda tecnica(HTML) 33 Page - Renesas Technology Corp |
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33 / 92 page  ZIOL2xxx Datasheet © 2016 Integrated Device Technology, Inc. 33 April 26, 2016 The structure of an SPI command is shown in Figure 3.12. There are three commands implemented which are: • MEM_DOWNLOAD Code: 0x01 Description: If the EEPROM data is valid (valid-flag = 1 data is not corrupt) the MEM_DOWNLOAD copies the EEPROM data into the configuration registers. If the data are suspected to be corrupt (valid-flag = 0), the EEPROM data are not downloaded and an interrupt (INT_L pin) will be asserted. • MEM_UPLOAD Code: 0x02 Description: The command copies the entire configuration register data into the EEPROM memory. The command execution starts with clearing the valid-flag and then with reading the configuration registers and writing the data into the EEPROM. At the end of cycle the valid-flag is set to 1. • SOFT_RESET Code: 0x07 Description: The command execution generates a reset for the entire IC. This reset occurs asynchronously with reference to the system clock but is released synchronously. When this SPI command is being executed, the system is hold in the reset state for about 2µs. The system reset state is indicated with active low on the INT_L pin. |
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