JAJSGS4P November 2008 – February 2021 TMS320F28020 , TMS320F280200 , TMS320F28021 , TMS320F28022 , TMS320F28023 , TMS320F28023-Q1 , TMS320F28026 , TMS320F28026-Q1 , TMS320F28026F , TMS320F28027 , TMS320F28027-Q1 , TMS320F28027F , TMS320F28027F-Q1
PRODUCTION DATA
The Boot ROM is factory-programmed with bootloader software. The Boot ROM uses the boot-mode-select GPIO pins to determine what boot mode to use upon power up. The user can select to boot normally to application code, to download new software from an external connection, or to select boot software that is programmed in the internal Flash/ROM. The Boot ROM also contains standard tables, such as SIN/COS waveforms, for use in math-related algorithms. The boot-ROM content, and hence the checksum value, may vary for different silicon revisions. For details, see the Boot ROM chapter in the TMS320F2802x,TMS320F2802xx Technical Reference Manual.
MODE | GPIO37/TDO | GPIO34/COMP2OUT | TRST | MODE |
---|---|---|---|---|
3 | 1 | 1 | 0 | GetMode |
2 | 1 | 0 | 0 | Wait (see Section 9.1.9 for description) |
1 | 0 | 1 | 0 | SCI |
0 | 0 | 0 | 0 | Parallel IO |
EMU | x | x | 1 | Emulation Boot |