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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UCD3138128APFC датащи(PDF) 59 Page - Texas Instruments |
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UCD3138128APFC датащи(HTML) 59 Page - Texas Instruments |
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59 / 83 page  59 UCD3138128A www.ti.com SLUSC99 – JULY 2016 Product Folder Links: UCD3138128A Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated ADDRESS SIZE MODULE 0xFFF7_F700 - 0xFFF7_F7FF 256 PMBus/I2C Interface (2) 0xFFF7_FA00 - 0xFFF7_FAFF 256 GIO 0xFFF7_FD00 - 0xFFF7_FDFF 256 Timer 0xFFFF_FD00 - 0xFFFF_FDFF 256 MMC 0xFFFF_FE00 - 0xFFFF_FEFF 256 DEC 0xFFFF_FF20 - 0xFFFF_FF37 23 CIM 0xFFFF_FFD0 - 0xFFFF_FFEC 28 SYS The registers and bit definitions inside the System and Peripheral blocks are detailed in the programmer’s manuals. 9.5.2 Boot ROM The device incorporates a 8 kB boot ROM. This boot ROM includes support for: • Program download through the PMBus • Device initialization • Examining and modifying registers and memory • Verifying and executing program flash automatically • Jumping to a customer defined boot program • Checksum evaluation to support using the program flash as a single 64 kB block or as 2-32 kB blocks. The Boot ROM is entered automatically on device reset. It initializes the device and then performs checksums on the program flash. If the first 2 kB of program FLASH 0 has a valid checksum, the program branches to location 0 in Program FLASH 0. This permits the use of a custom boot program. If the first checksum fails, it performs some additional checksum calculations to determine where the valid program is located. This permits full automated program memory checking, when there is no need for a custom boot program. The complete decision tree is located in Pseudo Code for ROM. Additionally, the part can support two separate programs in block 0 and block 1 through a custom boot-flash routine. If none of the checksums are valid, the Boot ROM stays in control, and accepts commands via the PMBus interface. These functions can be used to read and write to all memory locations in the device. Typically they are at address 11 and are used to download a program to Program Flash, and to command its execution. |
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