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DA14530 Datasheet(PDF) 46 Page - Renesas Technology Corp |
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DA14530 Datasheet(HTML) 46 Page - Renesas Technology Corp |
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46 / 333 page  DA14530 Low Power Bluetooth 5.1 SoC Final Datasheet Revision 3.4 21-Dec-2021 CFR0011-120-00 46 of 332 © 2021 Renesas Electronics Address Words (32-bit) Description Programmed during Chip Test Product Manufacturing 7F87FE8 1 TimeStamp: Bits[7:0] = TS_Byte0 Bits[15:8] = TS_Byte1 Bits[23:16] = TS_Byte2 Bits[31:24] =TS_Byte3 Yes 7F87FEC 5 Reserved for Future Needs The Device and Package Flag reflects what the current device (DA14530) is and which package is used. Default (unprogrammed) values are 0xFFFFFFFF. Boot specific mapping value is used to define a specific configuration for the SPI interface when used for booting from an external device (either an MCU or a FLASH). Byte0 is the flag to instruct the BootROM to use the specific SPI pin mapping and skip the rest of the serial peripheral interfaces. The BootROM takes care of waking up an external flash when the flash memory is in deep power- down state. Byte1 is used for the Wake-up Command opcode that the flash memory responds to. If Byte0 is left unprogrammed, the BootROM will send the "0xAB" opcode by default. Furthermore, the BootROM is able to wake up the external flash by toggling the CS pin. Two more flags indicate whether the application code has indeed been programmed (burned) into the OTP. Both flags are read by the BootROM software designating that the system is in the Normal mode and not in the Development mode (section 4.5). 4.4.2 Configuration Script The Configuration Script (CS) is a table of 32-bit entries and is 60 words deep, so in total the CS can utilize 240 bytes of space. The CS is used to program registers with values that are defined during production testing, to store a trim value for the application software, and to define the UART time-out timer during booting. It is executed by the Booter to prepare and initialize the system prior to that the CPU starts running the application code. The format of the commands in the CS is presented in Table 30. Table 30: CS Commands and Description # Command Type Description 1 Start Command One 32-bit word containing 0xA5A5A5A5 to signal a valid CS is in place. 2 Register Configuration ● One 32-bit word containing an address of an existing register ● One 32-bit word containing the data value of the register These are always in pairs with the address sitting in even memory addresses. 3 SDK Value One 32-bit word which is equal to 0x9000YYXX indicating that the next word is a value stored during production testing. More specifically: ● 9: it indicates that the following word(s) are not to be stored to registers but will be used by the SDK SW ● YY: it indicates that YY amount of words follow ● XX: it is an increasing value and can be used for indexing by the SW application. If YY > 1, XX will not be increased for the words that belong to the same value One or more 32-bit words can represent one value. 4 SWD mode One 32-bit word which is equal to 0x70000000. It prevents the JTAG from being enabled at the end of the Booter and the Booter will not enter the endless while (1) loop. Instead it will continue to rescan all peripherals in the development mode path. |
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