F75383/F75384

F75383/F75384

July, 2007

V0.32P

-6-

6.5

Temperature Monitoring

The F75383/F75384 monitors a local and a remote temperature sensor. Both can be measured from 0°C to 140.875°C.

The temperature format is as the following table:

Temperature ( High Byte )

Digital Output

Temperature ( Low Byte )

Digital Output

0°C

0000 0000

0°C

000 0 0000

1°C

0000 0001

0.125°C

001 0 0000

25°C

0001 1001

0.250°C

010 0 0000

50°C

0011 0010

0.375°C

011 0 0000

75°C

0100 1011

0.500°C

100 0 0000

90°C

0101 1010

0.625°C

101 0 0000

100°C

0110 0100

0.750°C

110 0 0000

140°C

1000 1100

0.875°C

111 0 0000

Remote-sensor transistor manufacturers

Manufacturer

Model Number

Panasonic

2SB0709 2N3906

Philips

PMBT3906

6.5

Alert#

Five events can trigger ALERT# to low:

(1). VT1(Local) temperature exceeds High Limit

(2). VT1(Local) temperature goes below Low Limit

(3). VT2(Remote) temperature exceeds High Limit

(4). VT2(Remote) temperature goes below Low Limit

(5). VT2(Remote) temperature is Open-circuit.

These five events are wired-NOR together. This means that when one of out-of-limit event occurs, the ALERT# output goes low if the

MASK control is disabled. ALERT# signal can be used as an IRQ-like interrupt or as an SMBALERT. When ALERT# acts as an

IRQ-like interrupt, the ALERT# will be de-asserted until the following 2 conditions are matched:

(1). The abnormal condition is gone