THMC50

REMOTE/LOCAL TEMPERATURE MONITOR AND

FAN CONTROLLER WITH SMBus INTERFACE

SLIS090 – JULY 1999

27

POST OFFICE BOX 655303

PRINCIPLES OF OPERATION

manufacturer’s test register - address 0x15

This register should only be used by Texas Instruments for testing. Reading or writing to this register during

normal use leads to erroneous events or measurements.

analog output - address 0x19

This register latches an 8-bit value into an R-2R D/A to provide a range of 0 V–2.5 V, accuracy can be

±5% or

more.

company ID - address 0x3E

This location contains the company identification number for TI – 0x49. This register is read only.

stepping - address 0x3F

This location contains the stepping number of the part in the lower four bits of the register [3:0]. The upper four

bits reflect the THMC50 version number [7:4]. The first version is 1100. The next version of the THMC50 would

be 1101, etc. For example, if the stepping were A0 and this part is a THMC50-1, then this register would read

1100 0000. This register is read only.