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TMS320F2810PBKA Datasheet(PDF) 90 Page - Texas Instruments |
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TMS320F2810PBKA Datasheet(HTML) 90 Page - Texas Instruments |
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90 / 173 page  90 TMS320F2810, TMS320F2811, TMS320F2812 SPRS174U – APRIL 2001 – REVISED JULY 2019 www.ti.com Submit Documentation Feedback Product Folder Links: TMS320F2810 TMS320F2811 TMS320F2812 Detailed Description Copyright © 2001–2019, Texas Instruments Incorporated (1) Extra care must be taken due to any effect toggling SPICLK to select a boot mode may have on external logic. (2) If the boot mode selected is Flash, H0, or OTP, then no external code is loaded by the bootloader. (3) PU = pin has an internal pullup. No PU = pin does not have an internal pullup. 6.1.8 L0, L1, H0 SARAMs The F281x contains an additional 16K x 16 of single-access RAM, divided into three blocks (4K + 4K + 8K). Each block can be independently accessed hence minimizing pipeline stalls. Each block is mapped to both program and data space. 6.1.9 Boot ROM The Boot ROM is factory-programmed with boot-loading software. The Boot ROM program executes after device reset and checks several GPIO pins to determine which boot mode to enter. For example, the user can select to execute code already present in the internal Flash or download new software to internal RAM through one of several serial ports. Other boot modes exist as well. The Boot ROM also contains standard tables, such as SIN/COS waveforms, for use in math-related algorithms. Table 6-1 shows the details of how various boot modes may be invoked. See the TMS320x281x DSP Boot ROM Reference Guide, for more information. Table 6-1. Boot Mode Selection(1)(2) BOOT MODE SELECTED GPIOF4 (SCITXDA) GPIOF12 (MDXA) GPIOF3 (SPISTEA) GPIOF2 (SPICLK) GPIO PU status(3) PU No PU No PU No PU Jump to Flash address 0x3F 7FF6. A branch instruction must have been programmed here prior to reset to re-direct code execution as desired. 1 x x x Call SPI_Boot to load from an external serial SPI EEPROM 0 1 x x Call SCI_Boot to load from SCI-A 0 0 1 1 Jump to H0 SARAM address 0x3F 8000 0 0 1 0 Jump to OTP address 0x3D 7800 0 0 0 1 Call Parallel_Boot to load from GPIO Port B 0 0 0 0 |
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