THMC10_08 Datasheet, PDF (9/22 Pages) Texas Instruments – REMOTE/LOCAL TEMPERATURE MONITOR WITH SMBus INTERFACE

THMC10
REMOTE/LOCAL TEMPERATURE MONITOR
WITH SMBus INTERFACE
SLIS089 − DECEMBER 1999
PRINCIPLES OF OPERATION
SMBus registers and addresses (continued)
Table 3. Address Pointer Register Map
REGISTER
ADDRESS
POINTER
RIT
00h
RET
01h
RS
02h
RC
03h
RCR
04h
RIHL
05h
RILL
06h
REHL
07h
RELL
08h
WC
09h
WCR
0Ah
WIHL
0Bh
WILL
0Ch
WEHL
0Dh
WELL
0Eh
OSHT
0Fh
MFG ID
FEh
REV ID
FFh
† _{If the THMC10 is in standby}
POR STATE
FUNCTION
0000 0000†
0000 0000†
0000 0000
0000 0000
0000 0010
0111 1111
1100 1001
0111 1111
1100 1001
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0100 1001
N/A
Read internal temperature
Read external temperature
Read status byte
Read configuration byte
Read acquisition rate byte
Read internal high limit
Read internal low limit
Read external high limit
Read external low limit
Write configuration byte
Write acquisition rate byte
Write internal high threshold
Write internal low threshold
Write external high threshold
Write external low threshold
One-shot (uses send byte format)
Read manufacturer ID (0×49 for TI)
Read silicon revision number
Table 4. Configuration Register Bit Assignments
BIT
7 (MSB)
6
5 to 0
NAME
MASK
Run/stop
POR STATE
FUNCTION
0
Masks ALERT interrupts if high.
0
Standby mode control bit, if high, standby mode is initiated. (Note: Does not disable SMBus Interface)
Reserved
Table 5. Status Register Bit Assignments
BIT
NAME POR STATE
FUNCTION
7 (MSB) BUSY
6
LHIGH†
5
LLOW†
4
RHIGH†
3
RLOW†
2
OPEN†
0
A/D is busy acquiring when high.
0
Internal high-temperature alarm has tripped when high, cleared by power-on reset (POR) or readout of
entire status byte.
0
Internal low-temperature alarm has tripped when high, cleared by POR or readout of entire status byte.
0
External high-temperature alarm has tripped when high, cleared by POR or readout of entire status byte.
0
External low-temperature alarm has tripped when high, cleared by POR or readout of entire status byte.
0
A high indicates an external diode open.
1 to 0
0
Reserved
† _{These flags stay high until cleared by POR or until the status byte register is read.}
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