SNIS139F February 2005 – January 2024 LM95231
PRODUCTION DATA
Command register selects which registers will be read from or written to. Data for this register should be transmitted during the Command Byte of the SMBus write communication.
P7 | P6 | P5 | P4 | P3 | P2 | P1 | P0 |
---|---|---|---|---|---|---|---|
Command |
P0-P7: Command
Name | Command (Hex) | Power-On Default Value (Hex) | Read/Write | # of used bits | Comments |
---|---|---|---|---|---|
Status Register | 02h | - | RO | 5 | 4 status bits and 1 busy bit |
Configuration Register | 03h | 00h | R/W | 5 | Includes conversion rate control |
Remote Diode Filter Control | 06h | 05h | R/W | 2 | Controls thermal diode filter setting |
Remote Diode Model Type Select | 30h | 01h | R/W | 2 | Selects the 2N3904 or Pentium 4 processor on 90nm process thermal diode model |
Remote Diode TruTherm Mode Control | 07h | 01h | 8 | Enables or disables TruTherm technology for Remote Diode measurements | |
1-shot | 0Fh | - | WO | - | Activates one conversion for all 3 channels if the chip is in standby mode (i.e. RUN/STOP bit = 1). Data transmitted by the host is ignored by the LM95231. |
Local Temperature MSB | 10h | - | RO | 8 | |
Remote Temperature 1 MSB | 11h | - | RO | 8 | |
Remote Temperature 2 MSB | 12h | - | RO | 8 | |
Local Temperature LSB | 20h | - | RO | 2 | All unused bits will report zero |
Remote Temperature 1 LSB | 21h | - | RO | 3/5 | All unused bits will report zero |
Remote Temperature 2 LSB | 22h | - | RO | 3/5 | All unused bits will report zero |
Manufacturer ID | FEh | 01h | RO | ||
Revision ID | FFh | A1h | RO |