emc1428 Standard Microsystems Corp., emc1428 Datasheet - Page 29

• Manufacturer Part Number: emc1428
• Description: 1 Degree C Multiple Temperature Sensor With Hw Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

ADDR
1°C Multiple Temperature Sensor with HW Thermal Shutdown & Hottest of Thermal Zones
Datasheet
SMSC EMC1428
5.3
02h
Diode Fault
-64
-63.875
-1
-0.125
0
0.125
1
63
64
127
127.875
R/W
R
Status Register
TEMPERATURE (°C)
All temperatures are stored as an 11-bit value with the high byte representing the integer value and
the low byte representing the fractional value left justified to occupy the MSBits. The data format is
standard 2’s complement from -64°C to 127.875°C as shown in
The Status Register reports general error conditions. To identify specific channels, refer to
Section
are cleared when the appropriate High Limit, Low Limit, or THERM Limit register has been read or
cleared.
Bit 7 - BUSY - This bit indicates that the ADC is currently converting. This bit does not cause the
ALERT pin to be asserted.
Bit 6 - HOTTEST - This bit is set if the REM_HOT bit (see
changes. This bit is cleared when the register is read.
Bit 4 - HIGH - This bit is set when any of the temperature channels meets or exceeds its programmed
high limit. See the High Limit Status Register for specific channel information
this bit will assert the ALERT pin.
Bit 3 - LOW - This bit is set when any of the temperature channels drops below its programmed low
limit. See the Low Limit Status Register for specific channel information
bit will assert the ALERT pin.
REGISTER
Status
5.18,
Section
BUSY
B7
5.19, and
Table 5.3 Temperature Data Format
TEST
HOT
B6
Table 5.4 Status Register
Section
DATASHEET
B5
-
5.20. The individual Status Register bits (except HOTTEST)
1000_0000_000b
0000_0000_000b
0000_0000_001b
0000_0001_000b
0100_0000_000b
1100_0000_000b
1100_0000_001b
0011_1111_000b
1111_1111_000b
0111_1111_000b
0111_1111_111b
1111_1111_111b
29
HIGH
B4
BINARY
LOW
B3
Section
FAULT
B2
Table
5.23) is set and the hottest channel
5.3.
(Section
SYS
SW_
B1
HEX (AS READ BY
(Section
REGISTERS)
Revision 0.68 (07-08-08)
FF_E0h
5.19). When set, this
C0_00h
C0_20h
FF_00h
7F_E0h
80_00h
00_00h
00_20h
01_00h
3F_00h
40_00h
7F_00h
HWSD
B0
5.18). When set,
Section
DEFAULT
00h
5.9,