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TMS320DM355CZCEA13 bảng dữ liệu(PDF) 91 Page - Texas Instruments |
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TMS320DM355CZCEA13 bảng dữ liệu(HTML) 91 Page - Texas Instruments |
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91 / 163 page ![]() Boot mode ? Boot mode ? Internal ROM Invoke loaded Program Invoke OneNAND Yes Boot from UART Boot OK ? No Boot from NAND flash Boot OK ? No Yes Boot from MMC/SD Boot OK ? Yes No Reset Boot from SPI flash Boot OK ? No Yes TMS320DM355 www.ti.com SPRS463G – SEPTEMBER 2007 – REVISED JUNE 2010 Figure 3-6. Boot Mode Functional Block Diagram 3.12.2 RBL NAND Boot Process The RBL NAND boot process is described as follows: • Upon NAND boot, if a SPI EEPROM is present, RBL reads first 32 bytes and look for magic pattern at offset 0x8. This magic number indicates if this is a SPI boot or beginning of NAND parameters. • If SPI boot, then NAND boot is bypassed. • Otherwise NAND boot is continued. If NAND parameters are found in the SPI EEPROM (as indicated by magic number), these parameters are used. • Else the following steps are used to determine NAND parameters: – If the device is ONFI, read the parameters page. Else command is sent to the NAND device requesting four bytes (called the NAND READ_ID) which contain the manufacturer, device and 4th Copyright © 2007–2010, Texas Instruments Incorporated Detailed Device Description 91 Submit Documentation Feedback Product Folder Link(s): TMS320DM355 |
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