W83L784R_05 Datasheet, PDF (31/52 Pages) Winbond – Monitoring IC

W83L784R/ W83L784G
7.14 Chip ID -- Index 4Eh
Power on default [7:0] = 0101, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-0 CHIPID[7:0]
Read Only
Winbond Chip ID number. Read this register will
return 50h for W83L784R.
7.15 ACPI Temperature Increment Register -- Index 4Fh
Power on deafult [7:0] = 0000, 0101 b
BIT
NAME
7 Reserved
6-0 DIFFREG[6:0]
READ/WRITE
Read/Write
Read/Write
DESCRIPTION
Reserved.
ACPI Temperature Increment Register. If set to this
register to non-zero value, the OVT# signal will be
activated at pointer of the temperature of times of
DIFFREG (i.e. DIFFREG*n, where n is non-zero
integer). The default value is 5 degree C.
7.16 OVT# Property Select -- Index 50h
Power on default [7:0] = 0000, 0000 b
BIT
NAME
READ/WRITE
DESCRIPTION
7-6 Reserved
Read/Write Reserved.
5-4 OVT_MD[1:0] Read/Write
OVT# Mode Select. There are three OVT# signal output
type.
<00> - Comparator Mode: (Default)
Temperature exceeding T_O causes the OVT# output
activated until the temperature is less than T_HYST.
<01> - Interrupt Mode:
Setting temperature exceeding T_O causes the OVT#
output activated indefinitely until reset reading
temperature sensor 1/2/3 registers. Temperature
exceeding T_O, then OVT# reset, and then temperature
going below T_HYST will also cause the OVT# activated
definitely until reset by reading temperature sensor
1/2/3. Once the OVT# will not be activated by exceeding
T_O, and then reset, if the temperature remains above
T_HYST, the OVT# will not be activated again.
<10> - ACPI Mode:
If set to 1 then enable ACPI OVT# output. Which is
always send an OVT# signal when the temperature over
the ACPI temperature increment value defined at Index
4Fh.
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Publication Release Date: Jan. 2005
Revision 1.1