KIT_TC1797_SK Infineon Technologies, KIT_TC1797_SK Datasheet - Page 89

• 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

FlexRay_AI.H003 Select upper-/lower page for IBF1/IBF2 in RAM test
mode
Each input buffer (IBF1/IBF2) consists of upper and lower page with 64 entries
each. These pages can be selected via page select register (CUST1.IBF1PAG,
CUST1.IBF2PAG).
Due to IBFS is not functional (see erratum FlexRay_AI.086), only the page of
one IBF (which is accessible) can be switched in RAM test mode.
To switch to the other input buffer, the mode must be changed from RAM test
mode to normal mode (TEST1.TMC=0
In normal mode the input buffer can be switched to the other input buffer by
writing the register IBCR.IBRH (double buffer handling).
Now the page of the other input buffer can be switched.
FlexRay_AI.H004 Only the first message can be received in External Loop
Back mode
If the loop back (TXD to RXD) will be performed via external physical
transceiver, there will be a large delay between TXD and RXD.
A delay of two sample clock periods can be tolerated from TXD to RXD due to
a majority voting filter operation on the sampled RXD.
Only the first message can be received, due to this delay.
To avoid that only the first message can be received, a start condition of another
message (idle and sampling '0' -> low pulse) must be performed.
The following procedure can be applied at one or both channels:
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•
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Now the next transmission can be requested.
TC1797, EES-AC, ES-AC, AC
wait for no activity (TEST1.AOx=0 -> bus idle)
set Test Multiplexer Control to I/O Test Mode (TEST1.TMC=2),
simultaneously TXDx=TXENx=0
wait for activity (TEST1.AOx=1 -> bus not idle)
set Test Multiplexer Control back to Normal signal path (TEST1.TMC=0)
wait for no activity (TEST1.AOx=0 -> bus idle)
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D
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Application Hints
Rel. 1.3, 18.12.2009
Errata Sheet