€• ,Œsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ4/translations/zh_CN/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/zh_TW/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/it_IT/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/ja_JP/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/ko_KR/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ4/translations/sp_SP/driver-api/soundwire/bra_cadence”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒCadence IP BRA support”h]”hŒCadence IP BRA support”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒN/var/lib/git/docbuild/linux/Documentation/driver-api/soundwire/bra_cadence.rst”h Kubh¢)”}”(hhh]”(h§)”}”(hŒFormat requirements”h]”hŒFormat requirements”…””}”(hhºhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh·hžhhŸh¶h KubhŒ paragraph”“”)”}”(hŒtThe Cadence IP relies on PDI0 for TX and PDI1 for RX. The data needs to be formatted with the following conventions:”h]”hŒtThe Cadence IP relies on PDI0 for TX and PDI1 for RX. The data needs to be formatted with the following conventions:”…””}”(hhÊhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h Khh·hžhubhŒ block_quote”“”)”}”(hX(1) all Data is stored in bits 15..0 of the 32-bit PDI FIFOs. (2) the start of packet is BIT(31). (3) the end of packet is BIT(30). (4) A packet ID is stored in bits 19..16. This packet ID is determined by software and is typically a rolling counter. (5) Padding shall be inserted as needed so that the Header CRC, Header response, Footer CRC, Footer response are always in Byte0. Padding is inserted by software for writes, and on reads software shall discard the padding added by the hardware. ”h]”hŒenumerated_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hŒ:all Data is stored in bits 15..0 of the 32-bit PDI FIFOs. ”h]”hÉ)”}”(hŒ9all Data is stored in bits 15..0 of the 32-bit PDI FIFOs.”h]”hŒ9all Data is stored in bits 15..0 of the 32-bit PDI FIFOs.”…””}”(hhéhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h K hhåubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhàubhä)”}”(hŒ the start of packet is BIT(31). ”h]”hÉ)”}”(hŒthe start of packet is BIT(31).”h]”hŒthe start of packet is BIT(31).”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h K hhýubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhàubhä)”}”(hŒthe end of packet is BIT(30). ”h]”hÉ)”}”(hŒthe end of packet is BIT(30).”h]”hŒthe end of packet is BIT(30).”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhàubhä)”}”(hŒsA packet ID is stored in bits 19..16. This packet ID is determined by software and is typically a rolling counter. ”h]”hÉ)”}”(hŒrA packet ID is stored in bits 19..16. This packet ID is determined by software and is typically a rolling counter.”h]”hŒrA packet ID is stored in bits 19..16. This packet ID is determined by software and is typically a rolling counter.”…””}”(hj1hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h Khj-ubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhàubhä)”}”(hŒñPadding shall be inserted as needed so that the Header CRC, Header response, Footer CRC, Footer response are always in Byte0. Padding is inserted by software for writes, and on reads software shall discard the padding added by the hardware. ”h]”hÉ)”}”(hŒðPadding shall be inserted as needed so that the Header CRC, Header response, Footer CRC, Footer response are always in Byte0. Padding is inserted by software for writes, and on reads software shall discard the padding added by the hardware.”h]”hŒðPadding shall be inserted as needed so that the Header CRC, Header response, Footer CRC, Footer response are always in Byte0. Padding is inserted by software for writes, and on reads software shall discard the padding added by the hardware.”…””}”(hjIhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h KhjEubah}”(h]”h ]”h"]”h$]”h&]”uh1hãhhàubeh}”(h]”h ]”h"]”h$]”h&]”Œenumtype”Œarabic”Œprefix”Œ(”Œsuffix”Œ)”uh1hÞhhÚubah}”(h]”h ]”h"]”h$]”h&]”uh1hØhŸh¶h K hh·hžhubeh}”(h]”Œformat-requirements”ah ]”h"]”Œformat requirements”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubh¢)”}”(hhh]”(h§)”}”(hŒExample format”h]”hŒExample format”…””}”(hjzhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjwhžhhŸh¶h KubhÉ)”}”(hŒlThe following table represents the sequence provided to PDI0 for a write command followed by a read command.”h]”hŒlThe following table represents the sequence provided to PDI0 for a write command followed by a read command.”…””}”(hjˆhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h KhjwhžhubhŒ literal_block”“”)”}”(hX/+---+---+--------+---------------+---------------+ + 1 | 0 | ID = 0 | WR HDR[1] | WR HDR[0] | + | | | WR HDR[3] | WR HDR[2] | + | | | WR HDR[5] | WR HDR[4] | + | | | pad | WR HDR CRC | + | | | WR Data[1] | WR Data[0] | + | | | WR Data[3] | WR Data[2] | + | | | WR Data[n-2] | WR Data[n-3] | + | | | pad | WR Data[n-1] | + 0 | 1 | | pad | WR Data CRC | +---+---+--------+---------------+---------------+ + 1 | 0 | ID = 1 | RD HDR[1] | RD HDR[0] | + | | | RD HDR[3] | RD HDR[2] | + | | | RD HDR[5] | RD HDR[4] | + 0 | 1 | | pad | RD HDR CRC | +---+---+--------+---------------+---------------+”h]”hX/+---+---+--------+---------------+---------------+ + 1 | 0 | ID = 0 | WR HDR[1] | WR HDR[0] | + | | | WR HDR[3] | WR HDR[2] | + | | | WR HDR[5] | WR HDR[4] | + | | | pad | WR HDR CRC | + | | | WR Data[1] | WR Data[0] | + | | | WR Data[3] | WR Data[2] | + | | | WR Data[n-2] | WR Data[n-3] | + | | | pad | WR Data[n-1] | + 0 | 1 | | pad | WR Data CRC | +---+---+--------+---------------+---------------+ + 1 | 0 | ID = 1 | RD HDR[1] | RD HDR[0] | + | | | RD HDR[3] | RD HDR[2] | + | | | RD HDR[5] | RD HDR[4] | + 0 | 1 | | pad | RD HDR CRC | +---+---+--------+---------------+---------------+”…””}”hj˜sbah}”(h]”h ]”h"]”h$]”h&]”Œ xml:space”Œpreserve”uh1j–hŸh¶h K hjwhžhubhÉ)”}”(hŒkThe table below represents the data received on PDI1 for the same write command followed by a read command.”h]”hŒkThe table below represents the data received on PDI1 for the same write command followed by a read command.”…””}”(hj¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÈhŸh¶h K2hjwhžhubj—)”}”(hXc+---+---+--------+---------------+---------------+ + 1 | 0 | ID = 0 | pad | WR Hdr Rsp | + 0 | 1 | | pad | WR Ftr Rsp | +---+---+--------+---------------+---------------+ + 1 | 0 | ID = 0 | pad | Rd Hdr Rsp | + | | | RD Data[1] | RD Data[0] | + | | | RD Data[3] | RD Data[2] | + | | | RD HDR[n-2] | RD Data[n-3] | + | | | pad | RD Data[n-1] | + | | | pad | RD Data CRC | + 0 | 1 | | pad | RD Ftr Rsp | +---+---+--------+---------------+---------------+”h]”hXc+---+---+--------+---------------+---------------+ + 1 | 0 | ID = 0 | pad | WR Hdr Rsp | + 0 | 1 | | pad 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