欢迎访问ic37.com |
会员登录 免费注册
发布采购

LM93CIMT 参数 Datasheet PDF下载

LM93CIMT图片预览
型号: LM93CIMT
PDF下载: 下载PDF文件 查看货源
内容描述: 硬件监控,集成风扇控制服务器管理 [Hardware Monitor with Integrated Fan Control for Server Management]
分类和应用: 风扇监控服务器
文件页数/大小: 92 页 / 637 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
 浏览型号LM93CIMT的Datasheet PDF文件第2页浏览型号LM93CIMT的Datasheet PDF文件第3页浏览型号LM93CIMT的Datasheet PDF文件第4页浏览型号LM93CIMT的Datasheet PDF文件第5页浏览型号LM93CIMT的Datasheet PDF文件第6页浏览型号LM93CIMT的Datasheet PDF文件第7页浏览型号LM93CIMT的Datasheet PDF文件第8页浏览型号LM93CIMT的Datasheet PDF文件第9页  
LM93 Hardware Monitor with Integrated Fan Control for Server Management
April 2004
LM93
Hardware Monitor with Integrated Fan Control for Server
Management
1.0 General Description
The LM93, hardware monitor, has a two wire digital interface
compatible with SMBus 2.0. Using an 8-bit
Σ∆
ADC, the
LM93 measures the temperature of two remote diode con-
nected transistors as well as its own die and 16 power supply
voltages.
To set fan speed, the LM93 has two PWM outputs that are
each controlled by up to four temperature zones. The fan-
control algorithm is lookup table based. The LM93 includes a
digital filter that can be invoked to smooth temperature read-
ings for better control of fan speed. The LM93 has four
tachometer inputs to measure fan speed. Limit and status
registers for all measured values are included.
The LM93 builds upon the functionality of previous mother-
board management ASICs and uses some of the LM85’s
features (i.e. smart tachometer mode). It also adds measure-
ment and control support for dynamic Vccp monitoring and
PROCHOT. It is designed to monitor a dual processor Xeon
class motherboard with a minimum of external components.
n
Dual dynamic VID monitoring (6 VIDs per processor)
n
8 general purpose I/Os:
— 4 can be configured as fan tachometer inputs
— 2 can be configured to connect to THERMTRIP from
a processor
— 2 are standard GPIOs that could be used to monitor
IERR signal
n
2 general purpose inputs that can be used to monitor
SCSI termination signals
n
Limit register comparisons of all monitored values
n
2-wire, SMBus 2.0 compliant, serial digital interface
— Supports byte/block read and write
— Configurable slave address (tri-level pin selects 1 of
3 possible addresses)
n
2.5V reference voltage output
n
56-pin TSSOP package
n
XOR-tree test mode
3.0 Key Specifications
Voltage Measurement Accuracy
Resolution
Temperature Sensor Accuracy
Temperature Range:
— LM93 Operational
— Remote Temp Accuracy
n
Power Supply Voltage
n
Power Supply Current
n
n
n
n
±
2% FS (max)
8-bits, 1˚C
±
3˚C (max)
0˚C to +85˚C
0˚C to +125˚C
+3.0V to +3.6V
0.9 mA
2.0 Features
n
n
n
n
n
n
n
n
n
n
n
n
8-bit
Σ∆
ADC
Monitors 16 power supplies
Monitors 2 remote thermal diodes
Internal ambient temperature sensing
Programmable autonomous fan control based on
temperature readings with fan boost support
Fan control based on 13-step lookup table
Temperature reading digital filter
1.0˚C digital temperature sensor resolution
0.5˚C temperature resolution for fan control
2 PWM fan speed control outputs
4 fan tachometer inputs
Dual processor thermal throttling (PROCHOT)
monitoring
4.0 Applications
n
Servers
n
Workstations
n
Multi-Microprocessor based equipment
5.0 Ordering Information
Order Number NS Package Number Transport media
LM93CIMT
LM93CIMTX
MTD56
MTD56
34 units in rail
1000 units in tape-and-reel
I2C is a registered trademark of the Philips Corporation.
© 2004 National Semiconductor Corporation
DS200682
www.national.com