Texas Instruments TMS320F28004 Series, Руководство пользователя

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Advisory PGA: Output Filter Path is Not Supported
Revisions Affected 0, A
Details The PGA module includes an embedded series-resistor signal path (R
FILTER
) for
implementing a low-pass filter at the PGA_OF pin. This R
FILTER
signal path should not
be used or enabled on the affected revisions.
The alternate functions shared with R
FILTER
on the PGA_OF pin are not affected. For
example, ADC input signals A2 and B6 are still available on PGA1_OF.
Workaround None
Advisory ROM: Flash API Library and FPU32 Twiddle Factor RFFT Table Not Present
Revisions Affected
0, A
Details In the affected revisions, the Flash API library and the FPU32 twiddle factor for the
1024-pt RFFT table are not present in the ROM. For details on the ROM contents,
see the Memory Maps section of the ROM Code and Peripheral Booting chapter in the
TMS320F28004x Real-Time Microcontrollers Technical Reference Manual .
Workaround None
Advisory REVID: Some TMX Revision A Devices Have an Incorrect REVID Value
Revision Affected A
Details Some early TMX Revision A devices have an incorrect value in REVID (address
0x0005_D00C). The REVID incorrectly indicates the Revision 0 value (0x0000_0000)
instead of the correct Revision A value (0x0000_0001). Software that uses REVID to
distinguish between Revision 0 and Revision A will not function as intended. There are
no other functional impacts due to this erratum. Applications that do not use REVID in
software will work properly as any other Revision A device.
Lot Trace Code affected:
• 65AVVDW
• 66ALSXW
Workaround The device markings on the package are correct and can be used to identify the device
revision.
Silicon Revision A Usage Notes and Advisories www.ti.com
38 TMS320F28004x Real-Time MCUs Silicon Errata
Silicon Revisions B, A, 0 SPRZ439G – JANUARY 2017 – REVISED AUGUST 2022
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