Texas Instruments TMS320F28004 Series, Manual

Page: 37 / 43

Advisory (continued) Analog Trim of Some TMX Devices
TRIM REGISTER
IMPACT OF TRIM VALUE EQUAL TO
ZERO
PGA gain and
offset PGAGAIN3TRIM Degraded performance of the PGA
gain and offset error specifications. No
workaround available.
PGAGAIN6TRIM
PGAGAIN12TRIM
PGAGAIN24TRIM
Workarounds The following workarounds can be used for improved performance, though it still may not
meet data sheet specifications.
Missing ADC offset trim can be generated by following the instructions in the ADC Zero
Offset Calibration section of the TMS320F28004x Real-Time Microcontrollers Technical
Reference Manual .
If the internal oscillator trim contains all zeros, the user can adjust the lowest 10 bits of
the oscillator trim register between 1 (minimum) and 1023 (maximum) while observing the
system clock on the XCLOCKOUT pin.
www.ti.com Silicon Revision A Usage Notes and Advisories
SPRZ439G – JANUARY 2017 – REVISED AUGUST 2022
Submit Document Feedback
TMS320F28004x Real-Time MCUs Silicon Errata
Silicon Revisions B, A, 0
37
Copyright © 2022 Texas Instruments Incorporated