SPRS439O June 2007 – April 2019 TMS320F28232 , TMS320F28234 , TMS320F28235 , TMS320F28332 , TMS320F28333 , TMS320F28334 , TMS320F28335
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The Boot ROM is factory-programmed with boot-loading software. Boot-mode signals are provided to tell the bootloader software what boot mode to use on power up. The user can select to boot normally or 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.
MODE | GPIO87/XA15 | GPIO86/XA14 | GPIO85/XA13 | GPIO84/XA12 | MODE(1) |
---|---|---|---|---|---|
F | 1 | 1 | 1 | 1 | Jump to Flash |
E | 1 | 1 | 1 | 0 | SCI-A boot |
D | 1 | 1 | 0 | 1 | SPI-A boot |
C | 1 | 1 | 0 | 0 | I2C-A boot |
B | 1 | 0 | 1 | 1 | eCAN-A boot |
A | 1 | 0 | 1 | 0 | McBSP-A boot |
9 | 1 | 0 | 0 | 1 | Jump to XINTF x16 |
8 | 1 | 0 | 0 | 0 | Jump to XINTF x32 |
7 | 0 | 1 | 1 | 1 | Jump to OTP |
6 | 0 | 1 | 1 | 0 | Parallel GPIO I/O boot |
5 | 0 | 1 | 0 | 1 | Parallel XINTF boot |
4 | 0 | 1 | 0 | 0 | Jump to SARAM |
3 | 0 | 0 | 1 | 1 | Branch to check boot mode |
2 | 0 | 0 | 1 | 0 | Branch to Flash, skip ADC calibration |
1 | 0 | 0 | 0 | 1 | Branch to SARAM, skip ADC calibration |
0 | 0 | 0 | 0 | 0 | Branch to SCI, skip ADC calibration |
NOTE
Modes 0, 1, and 2 in Table 6-1 are for TI debug only. Skipping the ADC calibration function in an application will cause the ADC to operate outside of the stated specifications