W83781D Datasheet, PDF (34/53 Pages) Winbond – MONITORING IC

(Select which register will be read from or written to):
P7 P6 P5 P4 P3 P2 P1 P0
W83781D
PRELIMINARY
P7-P2: Must be kept 0.
P1-P0: Register select:
P1 P0
Index Register Selection (Bank1 & Bank2)
0
0 Temperature (Read only) (Power up default)
CR50h & CR51h
0
1
Configuration (Read / Write)
CR52h
1
0
T_HYST (Read / Write)
CR53h & CR54h
1
1
T_OS (Read / Write)
CR55h & CR56h
8.15 Pin Control Register Index 4Bh (Bank 0)
Register Location:
Power on Default Value
Attribute:
Size:
4Bh
<7:0> 44h. Reset by MR.
Read/Write
8 bits
7 6 5 4 32 1 0
Reserved
Reserved
CLKINSEL
CLKINSEL
ADCOVSEL
ADCOVSEL
FAN3_DIV
FAN3_DIV
Bit 7-6:Fan3 speed divisor.
<1:0> = 00 - divide by 1;<1:0> = 01 - divide by 2;
<1:0> = 10 - divide by 4;<1:0> = 11 - divide by 8;Reset by MR.
Bit 5-4: Select A/D Converter Clock Input.
<5:4> = 00 - default.
<5:4> = 01- divided by 4.
<5:4> = 10 - divided by 16.
<5:4> = 11 - divided by 64.
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Publication Release Date : Nov. 1997
Revision 0.60