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6.7TCP2InputConfigurationRegister5(TCPIC5)
6.8TailSymbols
Registers
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TheTCP2inputconfigurationregister5(TCPIC5)isshowninFigure38anddescribedinTable11.
TCPIC5providesthe32-bitCRCPolynomialtoTCP2.
Figure38.TCP2InputConfigurationRegister5(TCPIC5)
310
CRCPOLY
R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table11.TCP2InputConfigurationRegister5(TCPIC5)FieldDescriptions
BitFieldValueDescription
31-0CRCPOLY0CRCpolynomial.This32bitparameterdefinestheCRCpolynomial.Table12listssomeexamples
forCRCPOLY.
Table12.CRCExamples
CRCLengthCRCPolyPolynomial
600000023X
6
+X
2
+X+1
8000000CDX
8
+X
7
+X
4
+X
3
+X+1
10000003ECX
10
+X
9
+X
8
+X
7
+X
6
+X
4
+X
3
+1
1200000F89X
12
+X
11
+X
10
+X
9
+X
8
+X
4
+X+1
160000E433X
16
+X
15
+X
14
+X
11
+X
6
+X
5
+X
2
+X+1
2400800043X
24
+X
7
+X
2
+X+1
3280000043X
32
+X
7
+X
2
+X+1
Thetailsymbolsaresymbolsappendedtotheendoftheinformationsymbolstoforceboththe
non-interleavedencodertothe0stateandtheinterleavedencodertothe0state.Therawinputdata
streamsforthe6-bittailsymbolsareshownintheTCP2inputregistersTCPIC6-11.
Italsoshowshowtoloadthesix18-bittailregistersinstandalonemode.Theseregistersareloadedfrom
theEDMA3bus.Insharedmode,inputregistersTCPIC9-11arenotused.Regardlessofthemode,
these6inputparametershavetobeloadedbytheEDMA3priortoanydecoding.
32TMS320C6457Turbo-DecoderCoprocessor2SPRUGK1–March2009
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