Texas Instruments TMS320F2837 D Series User Manual

4 Silicon Revision B Usage Notes and Advisories
This section lists the usage notes and advisories for this silicon revision.
4.1 Silicon Revision B Usage Notes
Silicon revision-applicable usage notes have been found on a later silicon revision. For more details, see Silicon
Revision C Usage Notes.
4.2 Silicon Revision B Advisories
Silicon revision-applicable advisories have been found on a later silicon revision. For more details, see Silicon
Revision C Advisories.
Advisory Analog Trim of Some TMX Devices
Revisions Affected
0, A, B
Details Some TMX samples may not have analog trims programmed. This could degrade the
performance of the ADC, buffered DAC, and internal oscillators. A value of all zeros in
these trim registers due to lack of trim will have the following impact.
TRIM REGISTER IMPACT OF UNTRIMMED REGISTER
ADC reference AnalogSubsysRegs.ANAREFTRIMA Degraded performance of the ADC for all
specifications.
AnalogSubsysRegs.ANAREFTRIMB
AnalogSubsysRegs.ANAREFTRIMC
AnalogSubsysRegs.ANAREFTRIMD
ADC linearity AdcaRegs.ADCINLTRIM1-6 Degraded INL and DNL specifications of
the ADC in 16-bit mode. No workaround
available.
AdcbRegs.ADCINLTRIM1-6
AdccRegs.ADCINLTRIM1-6
AdcdRegs.ADCINLTRIM1-6
ADC offset AdcaRegs.ADCOFFTRIM Degraded performance of the ADC offset
error specification.
AdcbRegs.ADCOFFTRIM
AdccRegs.ADCOFFTRIM
AdcdRegs.ADCOFFTRIM
Internal oscillator AnalogSubsysRegs.INTOSC1TRIM Degraded frequency accuracy and
temperature drift of the internal oscillators.
AnalogSubsysRegs.INTOSC2TRIM
Buffered DAC
offset
DacaRegs.DACTRIM Degraded offset error specification of the
buffered DAC. No workaround available.
DacbRegs.DACTRIM
DaccRegs.DACTRIM
Workarounds The following workarounds can be used for improved performance, though it still may not
meet data sheet specifications.
To determine if a device is TMX in software, check the status of the PARTIDL[QUAL].
If this field is 0, the device is TMX. PARTIDL[QUAL] can be read via the function
call SysCtl_getDeviceParametric(SYSCTL_DEVICE_QUAL). This check is implemented
in the Device_init() function, which will then call the Device_configureTMXAnalogTrim()
function if needed. The user can place any additional self-calibration or static calibration
code in the Device_configureTMXAnalogTrim() function.
If the ADC reference trim registers contain all zeros, write the static reference trim value
of 0x7BDD to the reference trim register for all ADCs.
Missing ADC offset trim can be generated by following the instructions in the “ADC Zero
Offset Calibration” section of the TMS320F2837xD Dual-Core Real-Time Microcontrollers
Technical Reference Manual .
www.ti.com Silicon Revision B Usage Notes and Advisories
SPRZ412M – DECEMBER 2013 – REVISED MARCH 2023
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TMS320F2837xD Dual-Core Real-Time MCUs Silicon Errata (Silicon
Revisions C, B, A, 0)
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Texas Instruments TMS320F2837 D Series Specifications

General

Brand	Texas Instruments
Model	TMS320F2837 D Series
Category	Microcontrollers
Language	English