F75377
Table of Contents
1. GENERAL DESCRIPTION......................................................................................................................................................8
2. FEATURES ....................................................................................................................................................................................8
3. KEY SPECIFICATIONS ..............................................................................................................................................................9
4. PIN CONFIGURATION.............................................................................................................................................................10
5. PIN DESCRIPTION....................................................................................................................................................................10
5.1.
5.2.
POWER PIN ...................................................................................................................................................................11
MONITORING ITEMS AND FAN SPEED CONTROL ...........................................................................................................11
6. FUNCTION DESCRIPTION .....................................................................................................................................................12
6.1 ACCESS INTERFACE..........................................................................................................................................................12
6.2 TEMPERATURE MONITORING............................................................................................................................................13
6.3 BETA COMPENSATION.......................................................................................................................................................14
6.4 PECI/SST MASTER..........................................................................................................................................................15
6.5 FAN CONTROL MACHINE..................................................................................................................................................15
6.6 PCB LAYOUT GUIDE ........................................................................................................................................................19
7. REGISTER DESCRIPTION......................................................................................................................................................20
7.1 CONFIGURATION REGISTER INDEX 01H .......................................................................................................................20
7.2 CONFIGURATION REGISTER INDEX 0AH.......................................................................................................................20
7.3 TCCATEMP REGISTER INDEX 0CH............................................................................................................................21
7.4 SSTADDRESS REGISTER INDEX 0DH...........................................................................................................................21
7.5 PECI SLOPE REGISTER INDEX 0EH..............................................................................................................................21
7.6 CONFIGURATION REGISTER INDEX 11H........................................................................................................................21
7.7 EXTERNAL DEVICE ADDRESS REGISTER - INDEX 40H ~ 46H ............................................................................................22
7.8 EXTERNAL DEVICE INDEX REGISTER - INDEX 48H ~ 4EH.................................................................................................22
7.9 EXTERNAL DEVICE DATA REGISTER - INDEX 4F...............................................................................................................22
7.10
7.11
7.12
7.13
7.14
7.15
EXTERNAL DEVICE ENABLE REGISTER - INDEX 50H.....................................................................................................22
EXTERNAL DEVICE SELECT REGISTER - INDEX 51H......................................................................................................22
EXTERNAL DEVICE MONITORING FREQUENCY SELECT REGISTER 1 - INDEX 52H.........................................................23
EXTERNAL DEVICE MONITORING FREQUENCY SELECT REGISTER 2 - INDEX 53H.........................................................23
I2C MASTER CONTROL REGISTER - INDEX 54H ............................................................................................................23
INTERFACE CONTROL REGISTER - INDEX 55H...............................................................................................................23
3
March., 2008
V0.12P