Reset (MAX6696 Only)

The MAX6696’s registers are reset to their power-on

values if RESET is driven high. When reset occurs, all

registers go to their default values, and the SMBus

address pins are sampled.

Conversion Rate Byte

The conversion-rate control register (Table 9) programs

the time interval between conversions in free-running

autonomous mode (RUN/STOP = 0). This variable rate

control can be used to reduce the supply current in

portable-equipment applications. The conversion rate

Dual Remote/Local Temperature Sensors with

SMBus Serial Interface

14

______________________________________________________________________________________

BIT

NAME

POR

FUNCTION

7(MSB)

BUSY

1

A/D is busy converting when 1.

6

LHIGH

0

When 1, internal high-temperature ALERT has tripped, cleared by POR or by reading this status

register. If the fault condition still exists, this bit is set again after the next conversion.

5

LLOW

0

When 1, internal low-temperature ALERT has tripped, cleared by POR or by reading this status

register. If the fault condition still exists, this bit is set again after the next conversion.

4

R1HIGH

0

A 1 indicates external junction 1 high-temperature ALERT has tripped, cleared by POR or by

reading this status register. If the fault condition still exists, this bit is set again after the next

conversion.

3

R1LOW

0

A 1 indicates external junction 1 low-temperature ALERT has tripped, cleared by POR or by reading this

status register. If the fault condition still exists, this bit is set again after the next conversion.

2

1OPEN

0

A 1 indicates external diode 1 is open, cleared by POR or by reading this status register. If the

fault condition still exists, this bit is set again after the next conversion.

1

R1OT1

0

A 1 indicates external junction 1 temperature exceeds the OT1 threshold, cleared by reading this

register.

0

IOT1

0

A 1 indicates internal junction temperature exceeds the internal OT1 threshold, cleared by

reading this register.

Table 7. Status Register 1 Bit Assignments

BIT

NAME

POR

FUNCTION

7(MSB)

IOT2

0

A 1 indicates internal junction temperature exceeds the internal OT2 threshold, cleared by

reading this register.

6

R2OT2

0

A 1 indicates external junction temperature 2 exceeds the external OT2 threshold, cleared by

reading this register.

5

R1OT2

0

A 1 indicates external junction temperature 1 exceeds the OT2 threshold, cleared by reading this

register.

4

R2HIGH

0

A 1 indicates external junction 2 high-temperature ALERT has tripped; cleared by POR or readout

of the status register. If the fault condition still exists, this bit is set again after the next conversion.

3

R2LOW

0

A 1 indicates external junction 2 low-temperature ALERT has tripped; cleared by POR or readout

of the status register. If the fault condition still exists, this bit is set again after the next conversion.

2

2OPEN

0

A 1 indicates external diode 2 open; cleared by POR or readout of the status register. If the fault

condition still exists, this bit is set again after the next conversion.

1

R2OT1

0

A 1 indicates external junction 2 temperature exceeds the OT1 threshold, cleared by reading this

register.

0

RFU

0

Reserved.

Table 8. Status Register 2 Bit Assignments