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參數(shù)資料
| 型號(hào)： | W83791D |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | W83791D Winbond H/W Monitoring IC |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PQFP48 |
| 封裝： | LQFP-48 |
| 文件頁(yè)數(shù)： | 17/46頁(yè) |
| 文件大小： | 636K |
| 代理商： | W83791D |
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W83791D
Preliminary
Publication Release Date: Aug, 2001
Revision 0.41
10
6.
FUNCTION DESCRIPTION
6.1 General Description
The W83791D provides 10 analog positive inputs, 5 fan speed inputs , at most 5 sets for fan PWM (Pulse
Width Modulation) control, 3 thermal inputs from remote thermistors
(Deschutes) thermal diode outputs, case open detection and beep function output when the monitored values exceed
preset ranges , including the voltage, temperature, and fan count. Moreover, W83791D uniquely provides several
innovative and practical functions to make the whole system more efficient and compliant with future trend of
network management, such as speech function,
ASF sensor compliant, SMBus 2.0 ARP command compatible, VID
table selection trapping, 5VID output control, and so forth. Once the monitoring function ofW83791D is enabled,
the watch dog machine will monitor every function and store the values to registers for comparison with preset
ranges. If the monitoring value exceeds the limit value, the interrupt status will be set to 1 and W83791D will issue
interrupt signals such as SMI# and IRQ if not masked..
B
2N3904 transistors or Pentium
TM
II/III
6.2 Access Interface
The W83791D provides I
2
C Serial Bus for microprocessor to read/write internal registers. In the W83791D,
there are three serial bus addresses. Through the first address defined at CR[48h], all the registers can be read and
written except CPUT1/CPUT2 temperature sensor registers. The read/write of the CPUT1/CPUT2 temperature
sensor registers can be implemented through the second address (defined at CR[4Ah] bit2-0) and the third address
(defined at CR[4Ah] bit6-4).
The first serial bus address of W83791D has 2 hardware setting bits set by pin10-11. The address is
001011[pin11][pin10]. Hence, the content of CR[48h] would be 00101110 if pin11=1 and pin10=0 .
6.2.1
(a) Serial bus write to internal address register followed by the data byte
0
SCL
The first serial bus access timing
Master
0
1
0
1
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
791D
R/W
Ack
by
791D
SDA
D7
D6
D5
D4
D3
D2
D1
D0
784R
791D
Stop
Mby
SCL
SDA (Continued)
7
8
0
7
8
0
7
8
Frame 2
Internal Index Register Byte
(Continued)
Frame 3
Data Byte
Frame 1
Serial Bus Address Byte
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
Ack
by
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| W83791G | 功能描述:IC MONITOR H/W 48-LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| W83791SD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:H/W MONITORING IC |
| W83791SG | 制造商:WINBOND 制造商全稱:Winbond 功能描述:H/W MONITORING IC |
| W83792AD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:H/W Monitoring IC (CSB Version) |
| W83792AG | 功能描述:IC MONITOR H/W 48-LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:SilentSense™ 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-55°C ~ 125°C，外部傳感器 精確度:±2°C 本地（最大），±3°C 遠(yuǎn)程（最大） 拓?fù)?ADC（三角積分型），比較器，寄存器庫(kù) 輸出類型:I²C?/SMBus? 輸出警報(bào):是 輸出風(fēng)扇:是 電源電壓:2.7 V ~ 5.5 V 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MSOP 包裝:帶卷 (TR) 其它名稱:MIC284-2BMMTRMIC284-2BMMTR-ND |
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