- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄377496 > INTEL82801 (Intel Corp.) 82801AB (ICH0) I/O Controller Hub PDF資料下載
參數(shù)資料
| 型號(hào)： | INTEL82801 |
| 廠商： | Intel Corp. |
| 英文描述： | 82801AB (ICH0) I/O Controller Hub |
| 中文描述： | 82801AB（ICH0）I / O控制器集線器 |
| 文件頁(yè)數(shù)： | 90/414頁(yè) |
| 文件大?。?/td> | 2140K |
| 代理商： | INTEL82801 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)當(dāng)前第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)第182頁(yè)第183頁(yè)第184頁(yè)第185頁(yè)第186頁(yè)第187頁(yè)第188頁(yè)第189頁(yè)第190頁(yè)第191頁(yè)第192頁(yè)第193頁(yè)第194頁(yè)第195頁(yè)第196頁(yè)第197頁(yè)第198頁(yè)第199頁(yè)第200頁(yè)第201頁(yè)第202頁(yè)第203頁(yè)第204頁(yè)第205頁(yè)第206頁(yè)第207頁(yè)第208頁(yè)第209頁(yè)第210頁(yè)第211頁(yè)第212頁(yè)第213頁(yè)第214頁(yè)第215頁(yè)第216頁(yè)第217頁(yè)第218頁(yè)第219頁(yè)第220頁(yè)第221頁(yè)第222頁(yè)第223頁(yè)第224頁(yè)第225頁(yè)第226頁(yè)第227頁(yè)第228頁(yè)第229頁(yè)第230頁(yè)第231頁(yè)第232頁(yè)第233頁(yè)第234頁(yè)第235頁(yè)第236頁(yè)第237頁(yè)第238頁(yè)第239頁(yè)第240頁(yè)第241頁(yè)第242頁(yè)第243頁(yè)第244頁(yè)第245頁(yè)第246頁(yè)第247頁(yè)第248頁(yè)第249頁(yè)第250頁(yè)第251頁(yè)第252頁(yè)第253頁(yè)第254頁(yè)第255頁(yè)第256頁(yè)第257頁(yè)第258頁(yè)第259頁(yè)第260頁(yè)第261頁(yè)第262頁(yè)第263頁(yè)第264頁(yè)第265頁(yè)第266頁(yè)第267頁(yè)第268頁(yè)第269頁(yè)第270頁(yè)第271頁(yè)第272頁(yè)第273頁(yè)第274頁(yè)第275頁(yè)第276頁(yè)第277頁(yè)第278頁(yè)第279頁(yè)第280頁(yè)第281頁(yè)第282頁(yè)第283頁(yè)第284頁(yè)第285頁(yè)第286頁(yè)第287頁(yè)第288頁(yè)第289頁(yè)第290頁(yè)第291頁(yè)第292頁(yè)第293頁(yè)第294頁(yè)第295頁(yè)第296頁(yè)第297頁(yè)第298頁(yè)第299頁(yè)第300頁(yè)第301頁(yè)第302頁(yè)第303頁(yè)第304頁(yè)第305頁(yè)第306頁(yè)第307頁(yè)第308頁(yè)第309頁(yè)第310頁(yè)第311頁(yè)第312頁(yè)第313頁(yè)第314頁(yè)第315頁(yè)第316頁(yè)第317頁(yè)第318頁(yè)第319頁(yè)第320頁(yè)第321頁(yè)第322頁(yè)第323頁(yè)第324頁(yè)第325頁(yè)第326頁(yè)第327頁(yè)第328頁(yè)第329頁(yè)第330頁(yè)第331頁(yè)第332頁(yè)第333頁(yè)第334頁(yè)第335頁(yè)第336頁(yè)第337頁(yè)第338頁(yè)第339頁(yè)第340頁(yè)第341頁(yè)第342頁(yè)第343頁(yè)第344頁(yè)第345頁(yè)第346頁(yè)第347頁(yè)第348頁(yè)第349頁(yè)第350頁(yè)第351頁(yè)第352頁(yè)第353頁(yè)第354頁(yè)第355頁(yè)第356頁(yè)第357頁(yè)第358頁(yè)第359頁(yè)第360頁(yè)第361頁(yè)第362頁(yè)第363頁(yè)第364頁(yè)第365頁(yè)第366頁(yè)第367頁(yè)第368頁(yè)第369頁(yè)第370頁(yè)第371頁(yè)第372頁(yè)第373頁(yè)第374頁(yè)第375頁(yè)第376頁(yè)第377頁(yè)第378頁(yè)第379頁(yè)第380頁(yè)第381頁(yè)第382頁(yè)第383頁(yè)第384頁(yè)第385頁(yè)第386頁(yè)第387頁(yè)第388頁(yè)第389頁(yè)第390頁(yè)第391頁(yè)第392頁(yè)第393頁(yè)第394頁(yè)第395頁(yè)第396頁(yè)第397頁(yè)第398頁(yè)第399頁(yè)第400頁(yè)第401頁(yè)第402頁(yè)第403頁(yè)第404頁(yè)第405頁(yè)第406頁(yè)第407頁(yè)第408頁(yè)第409頁(yè)第410頁(yè)第411頁(yè)第412頁(yè)第413頁(yè)第414頁(yè)
Functional Description
5-40
82801AA and 82801AB Datasheet
5.10
Real Time Clock (D31:F0)
The Real Time Clock (RTC) module provides a battery backed-up date and time keeping device
with two banks of static RAM with 128 bytes each, although the first bank has 114 bytes for
general purpose usage. Three interrupt features are available: time of day alarm with once a second
to once a month range, periodic rates of 122us to 500ms, and end of update cycle notification.
Seconds, minutes, hours, days, day of week, month, and year are counted. Daylight savings
compensation is optional. The hour is represented in twelve or twenty-four hour format, and data
can be represented in BCD or binary format. The design is meant to be functionally compatible
with the Motorola MS146818B. The time keeping comes from a 32.768 kHz oscillating source,
which is divided to achieve an update every second. The lower 14 bytes on the lower RAM block
has very specific functions. The first ten are for time and date information. The next four (0Ah to
0Dh) are registers, which configure and report RTC functions.
The time and calendar data should match the data mode (BCD or binary) and hour mode (12 or 24
hour) as selected in register B. It is up to the programmer to make sure that data stored in these
locations is within the reasonable values ranges and represents a possible date and time. The
exception to these ranges is to store a value of C0 - FF in the Alarm bytes to indicate a don’t care
situation. All Alarm conditions must match to trigger an Alarm Flag, which could trigger an Alarm
Interrupt if enabled. The SET bit of register B should be one while programming these locations to
avoid clashes with an update cycle. Access to time and date information is done through the RAM
locations. If a RAM read from the ten time and date bytes is attempted during an update cycle, the
value read does not necessarily represent the true contents of those locations. Any RAM writes
under the same conditions are ignored.
Note:
The ICH supports the ability to generate an SMI# based on Year 2000 rollover. See
Section 5.10.4
for more information on the century rollover.
The ICH does not implement month/year alarms.
5.10.1
Update Cycles
An update cycle occurs once a second, if the SET bit of register B is not asserted and the divide
chain is properly configured. During this procedure, the stored time and date are incremented,
overflow checked, a matching alarm condition checked, and the time and date rewritten to the
RAM locations. To maintain compatibility with the Motorola MS146818B, the update cycle starts
at least 244 us after the UIP bit of register A is asserted, and the entire cycle does not take more
than 1984 us to complete. The time and date RAM locations (0-9) will be disconnected from the
external bus during this time.
To avoid update and data corruption conditions, external RAM access to these locations can safely
occur at two times. When a updated-ended interrupt is detected, almost 999 ms is available to read
and write the valid time and date data. If the UIP bit of Register A is detected to be low, there is at
least 244 us before the update cycle begins.
Warning:
The overflow conditions for leap years and daylight savings adjustments are based on more than
one date or time item. To ensure proper operation when adjusting the time, the new time and data
values should be set at least two seconds before one of these conditions (leap year, daylight savings
time adjustments) occurs.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| INTEL82802AB | Firmware Hub (FWH) |
| INTELDX2 | High-Performance 32-Bit Embedded Processor(高性能32位嵌入式處理器) |
| INTELDX4 | Embedded Write-Back Enhanced Processor(32位回復(fù)嵌入式增強(qiáng)型處理器) |
| IPS54511 | FULLY PROTECTED HIGH SIDE POWER MOSFET SWITCH |
| IPS5451 | FULLY PROTECTED HIGH SIDE POWER MOSFET SWITCH |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| INTEL82802AB | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Firmware Hub (FWH) |
| INTELLIGENT CHARGER + 4AA | 制造商:Energizer 功能描述:Bulk |
| INTELLI-INCH-LR-STARTER K | 制造商:ALL MOTION 功能描述:Intelli-Inch Stepper & Controller Starter Kit |
| INTELLIPANEL | 制造商:GJD 功能描述:EXTENSION LEAD 8GANG INTELLIPANEL 制造商:GJD 功能描述:EXTENSION LEAD, 8GANG, INTELLIPANEL |
| INTELLIPLUG | 制造商:GLOBAL COMMUNICATIONS 功能描述:ADAPTOR 3WAY INTELLIPLUG |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。