€•!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”Œ)/translations/zh_CN/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ)/translations/zh_TW/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ)/translations/it_IT/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ)/translations/ja_JP/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ)/translations/ko_KR/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ)/translations/sp_SP/i2c/ten-bit-addresses”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒI2C Ten-bit Addresses”h]”hŒI2C Ten-bit Addresses”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒC/var/lib/git/docbuild/linux/Documentation/i2c/ten-bit-addresses.rst”h KubhŒ paragraph”“”)”}”(hXFThe I2C protocol knows about two kinds of device addresses: normal 7 bit addresses, and an extended set of 10 bit addresses. The sets of addresses do not intersect: the 7 bit address 0x10 is not the same as the 10 bit address 0x10 (though a single device could respond to both of them). To avoid ambiguity, the user sees 10 bit addresses mapped to a different address space, namely 0xa000-0xa3ff. The leading 0xa (= 10) represents the 10 bit mode. This is used for creating device names in sysfs. It is also needed when instantiating 10 bit devices via the new_device file in sysfs.”h]”hXFThe I2C protocol knows about two kinds of device addresses: normal 7 bit addresses, and an extended set of 10 bit addresses. The sets of addresses do not intersect: the 7 bit address 0x10 is not the same as the 10 bit address 0x10 (though a single device could respond to both of them). To avoid ambiguity, the user sees 10 bit addresses mapped to a different address space, namely 0xa000-0xa3ff. The leading 0xa (= 10) represents the 10 bit mode. This is used for creating device names in sysfs. It is also needed when instantiating 10 bit devices via the new_device file in sysfs.”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒsI2C messages to and from 10-bit address devices have a different format. See the I2C specification for the details.”h]”hŒsI2C messages to and from 10-bit address devices have a different format. See the I2C specification for the details.”…””}”(hhÇhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¸)”}”(hŒrThe current 10 bit address support is minimal. It should work, however you can expect some problems along the way:”h]”hŒrThe current 10 bit address support is minimal. It should work, however you can expect some problems along the way:”…””}”(hhÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubhŒ bullet_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hX4Not all bus drivers support 10-bit addresses. Some don't because the hardware doesn't support them (SMBus doesn't require 10-bit address support for example), some don't because nobody bothered adding the code (or it's there but not working properly.) Software implementation (i2c-algo-bit) is known to work.”h]”h¸)”}”(hX4Not all bus drivers support 10-bit addresses. Some don't because the hardware doesn't support them (SMBus doesn't require 10-bit address support for example), some don't because nobody bothered adding the code (or it's there but not working properly.) Software implementation (i2c-algo-bit) is known to work.”h]”hX>Not all bus drivers support 10-bit addresses. Some don’t because the hardware doesn’t support them (SMBus doesn’t require 10-bit address support for example), some don’t because nobody bothered adding the code (or it’s there but not working properly.) Software implementation (i2c-algo-bit) is known to work.”…””}”(hhîhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khhêubah}”(h]”h ]”h"]”h$]”h&]”uh1hèhhåhžhhŸh¶h Nubhé)”}”(hŒœSome optional features do not support 10-bit addresses. This is the case of automatic detection and instantiation of devices by their, drivers, for example.”h]”h¸)”}”(hŒœSome optional features do not support 10-bit addresses. This is the case of automatic detection and instantiation of devices by their, drivers, for example.”h]”hŒœSome optional features do not support 10-bit addresses. This is the case of automatic detection and instantiation of devices by their, drivers, for example.”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1hèhhåhžhhŸh¶h Nubhé)”}”(hŒTMany user-space packages (for example i2c-tools) lack support for 10-bit addresses. ”h]”h¸)”}”(hŒSMany user-space packages (for example i2c-tools) lack support for 10-bit addresses.”h]”hŒSMany user-space packages (for example i2c-tools) lack support for 10-bit addresses.”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1hèhhåhžhhŸh¶h Nubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1hãhŸh¶h Khh£hžhubh¸)”}”(hŒ¨Note that 10-bit address devices are still pretty rare, so the limitations listed above could stay for a long time, maybe even forever if nobody needs them to be fixed.”h]”hŒ¨Note that 10-bit address devices are still pretty rare, so the limitations listed above could stay for a long time, maybe even forever if nobody needs them to be fixed.”…””}”(hj:hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubeh}”(h]”Œi2c-ten-bit-addresses”ah ]”h"]”Œi2c ten-bit addresses”ah$]”h&]”uh1h¡hhhžhhŸh¶h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h¶uh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¦NŒ generator”NŒ datestamp”NŒ source_link”NŒ source_url”NŒ toc_backlinks”Œentry”Œfootnote_backlinks”KŒ sectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒ strip_classes”NŒ report_level”KŒ halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ traceback”ˆŒinput_encoding”Œ utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”jsŒerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œ language_code”Œen”Œrecord_dependencies”NŒconfig”NŒ id_prefix”hŒauto_id_prefix”Œid”Œ dump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h¶Œ _destination”NŒ _config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒ raw_enabled”KŒline_length_limit”M'Œpep_references”NŒ pep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒ rfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œ smart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œ docinfo_xform”KŒsectsubtitle_xform”‰Œ image_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”jMjJsŒ nametypes”}”jM‰sh}”jJh£sŒ footnote_refs”}”Œ citation_refs”}”Œ autofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ footnotes”]”Œ citations”]”Œautofootnote_start”KŒsymbol_footnote_start”KŒ id_counter”Œ collections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œ transformer”NŒ include_log”]”Œ decoration”Nhžhub.