€•A:      Œsphinx.addnodes”Œdocument”“”)”}”(Œ	rawsource”Œ ”Œchildren”]”(Œtranslations”ŒLanguagesNode”“”)”}”(hhh]”(h Œpending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ
attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ	refdomain”Œstd”Œreftype”Œdoc”Œ	reftarget”Œ/translations/zh_CN/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuŒtagname”hhhubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/zh_TW/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/it_IT/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ja_JP/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/ko_KR/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ	refdomain”h)Œreftype”h+Œ	reftarget”Œ/translations/sp_SP/hwmon/lm78”Œmodname”NŒ	classname”NŒrefexplicit”ˆuh1hhhubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h
hhŒ	_document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒKernel driver lm78”h]”hŒKernel driver lm78”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒ8/var/lib/git/docbuild/linux/Documentation/hwmon/lm78.rst”h KubhŒ	paragraph”“”)”}”(hŒSupported chips:”h]”hŒSupported chips:”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubhŒblock_quote”“”)”}”(hXÅ  * National Semiconductor LM78 / LM78-J

  Prefix: 'lm78'

  Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)

  Datasheet: Publicly available at the National Semiconductor website

             http://www.national.com/

* National Semiconductor LM79

  Prefix: 'lm79'

  Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)

  Datasheet: Publicly available at the National Semiconductor website

             http://www.national.com/

”h]”hŒbullet_list”“”)”}”(hhh]”(hŒ	list_item”“”)”}”(hŒÜNational Semiconductor LM78 / LM78-J

Prefix: 'lm78'

Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)

Datasheet: Publicly available at the National Semiconductor website

           http://www.national.com/
”h]”(h¸)”}”(hŒ$National Semiconductor LM78 / LM78-J”h]”hŒ$National Semiconductor LM78 / LM78-J”…””}”(hhØhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubh¸)”}”(hŒPrefix: 'lm78'”h]”hŒPrefix: â€˜lm78â€™”…””}”(hhæhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubh¸)”}”(hŒ;Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)”h]”hŒ;Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)”…””}”(hhôhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K
hhÔubh¸)”}”(hŒCDatasheet: Publicly available at the National Semiconductor website”h]”hŒCDatasheet: Publicly available at the National Semiconductor website”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubhÈ)”}”(hŒhttp://www.national.com/
”h]”h¸)”}”(hŒhttp://www.national.com/”h]”hŒ	reference”“”)”}”(hj  h]”hŒhttp://www.national.com/”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”j  uh1j  hj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj  ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhŸh¶h KhhÔubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÒhhÏubhÓ)”}”(hŒÔNational Semiconductor LM79

Prefix: 'lm79'

Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)

Datasheet: Publicly available at the National Semiconductor website

           http://www.national.com/

”h]”(h¸)”}”(hŒNational Semiconductor LM79”h]”hŒNational Semiconductor LM79”…””}”(hj>  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj:  ubh¸)”}”(hŒPrefix: 'lm79'”h]”hŒPrefix: â€˜lm79â€™”…””}”(hjL  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj:  ubh¸)”}”(hŒ;Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)”h]”hŒ;Addresses scanned: I2C 0x28 - 0x2f, ISA 0x290 (8 I/O ports)”…””}”(hjZ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj:  ubh¸)”}”(hŒCDatasheet: Publicly available at the National Semiconductor website”h]”hŒCDatasheet: Publicly available at the National Semiconductor website”…””}”(hjh  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj:  ubhÈ)”}”(hŒhttp://www.national.com/

”h]”h¸)”}”(hŒhttp://www.national.com/”h]”j  )”}”(hj|  h]”hŒhttp://www.national.com/”…””}”(hj~  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”j|  uh1j  hjz  ubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjv  ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhŸh¶h Khj:  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÒhhÏubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1hÍhŸh¶h KhhÉubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhŸh¶h Khh£hžhubhŒdefinition_list”“”)”}”(hhh]”hŒdefinition_list_item”“”)”}”(hŒMAuthors:
- Frodo Looijaard <frodol@dds.nl>
- Jean Delvare <jdelvare@suse.de>
”h]”(hŒterm”“”)”}”(hŒAuthors:”h]”hŒAuthors:”…””}”(hj¹  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j·  hŸh¶h Khj³  ubhŒ
definition”“”)”}”(hhh]”hÎ)”}”(hhh]”(hÓ)”}”(hŒFrodo Looijaard <frodol@dds.nl>”h]”h¸)”}”(hjÑ  h]”(hŒFrodo Looijaard <”…””}”(hjÓ  hžhhŸNh Nubj  )”}”(hŒfrodol@dds.nl”h]”hŒfrodol@dds.nl”…””}”(hjÚ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œmailto:frodol@dds.nl”uh1j  hjÓ  ubhŒ>”…””}”(hjÓ  hžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhjÏ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÒhjÌ  ubhÓ)”}”(hŒ Jean Delvare <jdelvare@suse.de>
”h]”h¸)”}”(hŒJean Delvare <jdelvare@suse.de>”h]”(hŒJean Delvare <”…””}”(hjþ  hžhhŸNh Nubj  )”}”(hŒjdelvare@suse.de”h]”hŒjdelvare@suse.de”…””}”(hj  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œmailto:jdelvare@suse.de”uh1j  hjþ  ubhŒ>”…””}”(hjþ  hžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjú  ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÒhjÌ  ubeh}”(h]”h ]”h"]”h$]”h&]”j¤  Œ-”uh1hÍhŸh¶h KhjÉ  ubah}”(h]”h ]”h"]”h$]”h&]”uh1jÇ  hj³  ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j±  hŸh¶h Khj®  ubah}”(h]”h ]”h"]”h$]”h&]”uh1j¬  hh£hžhhŸNh Nubh¢)”}”(hhh]”(h§)”}”(hŒDescription”h]”hŒDescription”…””}”(hjB  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hj?  hžhhŸh¶h K ubh¸)”}”(hŒ•This driver implements support for the National Semiconductor LM78, LM78-J
and LM79. They are described as 'Microprocessor System Hardware Monitors'.”h]”hŒ™This driver implements support for the National Semiconductor LM78, LM78-J
and LM79. They are described as â€˜Microprocessor System Hardware Monitorsâ€™.”…””}”(hjP  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K"hj?  hžhubh¸)”}”(hX  There is almost no difference between the three supported chips. Functionally,
the LM78 and LM78-J are exactly identical. The LM79 has one more VID line,
which is used to report the lower voltages newer Pentium processors use.
From here on, LM7* means either of these three types.”h]”hX  There is almost no difference between the three supported chips. Functionally,
the LM78 and LM78-J are exactly identical. The LM79 has one more VID line,
which is used to report the lower voltages newer Pentium processors use.
From here on, LM7* means either of these three types.”…””}”(hj^  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K%hj?  hžhubh¸)”}”(hŒ•The LM7* implements one temperature sensor, three fan rotation speed sensors,
seven voltage sensors, VID lines, alarms, and some miscellaneous stuff.”h]”hŒ•The LM7* implements one temperature sensor, three fan rotation speed sensors,
seven voltage sensors, VID lines, alarms, and some miscellaneous stuff.”…””}”(hjl  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K*hj?  hžhubh¸)”}”(hXõ  Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed; it is triggered again
as soon as it drops below the Hysteresis value. A more useful behavior
can be found by setting the Hysteresis value to +127 degrees Celsius; in
this case, alarms are issued during all the time when the actual temperature
is above the Overtemperature Shutdown value. Measurements are guaranteed
between -55 and +125 degrees, with a resolution of 1 degree.”h]”hXõ  Temperatures are measured in degrees Celsius. An alarm is triggered once
when the Overtemperature Shutdown limit is crossed; it is triggered again
as soon as it drops below the Hysteresis value. A more useful behavior
can be found by setting the Hysteresis value to +127 degrees Celsius; in
this case, alarms are issued during all the time when the actual temperature
is above the Overtemperature Shutdown value. Measurements are guaranteed
between -55 and +125 degrees, with a resolution of 1 degree.”…””}”(hjz  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K-hj?  hžhubh¸)”}”(hX™  Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.”h]”hX™  Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
triggered if the rotation speed has dropped below a programmable limit. Fan
readings can be divided by a programmable divider (1, 2, 4 or 8) to give
the readings more range or accuracy. Not all RPM values can accurately be
represented, so some rounding is done. With a divider of 2, the lowest
representable value is around 2600 RPM.”…””}”(hjˆ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K5hj?  hžhubh¸)”}”(hXy  Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Note that minimum in this case always means 'closest to
zero'; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution
of 0.016 volt.”h]”hX}  Voltage sensors (also known as IN sensors) report their values in volts.
An alarm is triggered if the voltage has crossed a programmable minimum
or maximum limit. Note that minimum in this case always means â€˜closest to
zeroâ€™; this is important for negative voltage measurements. All voltage
inputs can measure voltages between 0 and 4.08 volts, with a resolution
of 0.016 volt.”…””}”(hj–  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K<hj?  hžhubh¸)”}”(hŒöThe VID lines encode the core voltage value: the voltage level your processor
should work with. This is hardcoded by the mainboard and/or processor itself.
It is a value in volts. When it is unconnected, you will often find the
value 3.50 V here.”h]”hŒöThe VID lines encode the core voltage value: the voltage level your processor
should work with. This is hardcoded by the mainboard and/or processor itself.
It is a value in volts. When it is unconnected, you will often find the
value 3.50 V here.”…””}”(hj¤  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KChj?  hžhubh¸)”}”(hX|  If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.”h]”hX|  If an alarm triggers, it will remain triggered until the hardware register
is read at least once. This means that the cause for the alarm may
already have disappeared! Note that in the current implementation, all
hardware registers are read whenever any data is read (unless it is less
than 1.5 seconds since the last update). This means that you can easily
miss once-only alarms.”…””}”(hj²  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KHhj?  hžhubh¸)”}”(hŒwThe LM7* only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return 'old' values.”h]”hŒ{The LM7* only updates its values each 1.5 seconds; reading it more often
will do no harm, but will return â€˜oldâ€™ values.”…””}”(hjÀ  hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KOhj?  hžhubeh}”(h]”Œdescription”ah ]”h"]”Œdescription”ah$]”h&]”uh1h¡hh£hžhhŸh¶h K ubeh}”(h]”Œkernel-driver-lm78”ah ]”h"]”Œkernel driver lm78”ah$]”h&]”uh1h¡hhhžhhŸh¶h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h¶uh1hŒcurrent_source”NŒcurrent_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¦NŒ	generator”NŒ	datestamp”NŒsource_link”NŒ
source_url”NŒtoc_backlinks”Œentry”Œfootnote_backlinks”KŒsectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒstrip_classes”NŒreport_level”KŒ
halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ	traceback”ˆŒinput_encoding”Œ	utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”j  Œerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œlanguage_code”Œen”Œrecord_dependencies”NŒconfig”NŒ	id_prefix”hŒauto_id_prefix”Œid”Œdump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h¶Œ_destination”NŒ_config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒraw_enabled”KŒline_length_limit”M'Œpep_references”NŒpep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒrfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ	tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œsmart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œdocinfo_xform”KŒsectsubtitle_xform”‰Œimage_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(jÛ  jØ  jÓ  jÐ  uŒ	nametypes”}”(jÛ  ‰jÓ  ‰uh}”(jØ  h£jÐ  j?  uŒfootnote_refs”}”Œcitation_refs”}”Œautofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ	footnotes”]”Œ	citations”]”Œautofootnote_start”KŒsymbol_footnote_start”K Œ
id_counter”Œcollections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œtransformer”NŒinclude_log”]”Œ
decoration”Nhžhub.