KIT_TC1797_SK Infineon Technologies, KIT_TC1797_SK Datasheet - Page 85

• Manufacturer Part Number: KIT_TC1797_SK
• Description: KIT STARTER AUDO FUTURE TC1797
• Manufacturer: Infineon Technologies
• Series: Audo Futurer
• Type: MCUr

Specifications of KIT_TC1797_SK

• Contents: Board, Adapters, Cables, CD, Power Supply
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: TC1797
• Other names: KITTC1797SKIN

Several previous inconsistencies regarding the updating of the PCXI and the
storing of PCXI fields in the first word of a CSA are now removed.
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From the TriCore V1.3.8 architecture manuals onwards it is also made explicit
that:
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However, prior to the TriCore V1.3.6 architecture manual, and as implemented
by the TriCore1.3 core, the following behaviour was present:
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The main implication of this change is that the value held in the PCXI.PCPN and
PCXI.PIE fields following a BISR, SVLCX or RSLCX instruction may be
different between the TriCore1.3.1 and TriCore1.3 cores. If it is necessary to
determine the priority number of an interrupted task after performing a BISR or
SVLCX instruction, and before the corresponding RSLCX instruction, then
either of the following access methods may be used.
Method #1
For applications where the time prior to execution of the BISR instruction is not
critical, the priority number of the interrupted task may be read from the PCXI
before execution of the BISR instruction.
...
mfcr
bisr
TC1797, EES-AC, ES-AC, AC
CALL has always placed the full PCXI into the CSA
BISR has always placed the full PCXI into the CSA
SVLCX has always placed the full PCXI into the CSA
RET has always restored the full PCXI from the CSA
RFE has always restored the full PCXI from the CSA
CALL, BISR and SVLCX now explicitly update the PCXI.PCPN, PCXI.PIE,
PCXI.UL, PCXI.PCXS and PCXI.PCXO fields after storing the previous
PCXI contents to memory.
RSLCX now restores the full PCXI from the CSA.
BISR and SVLCX previously only updated the PCXI.UL, PCXI.PCXS and
PCXI.PCXO fields after storing the previous PCXI contents to memory.
PCXI.PCPN and PCXI.PIE were not updated.
RSLCX previously restored only the PCXI.UL, PCXI.PCXS and
PCXI.PCXO fields of the PCXI.
d15, #0xFE00
#<New Priority Number>
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Application Hints
Rel. 1.3, 18.12.2009
Errata Sheet