2.2 LOCAL and REMOTE TEMPERATURE REGISTERS (LT, and RT)

(Read Only Address 00h, and 01h):

D7

D6

D5

D4

D3

D2

D1

D0

MSB

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

D7–D0: Temperature Data. One LSB = 1˚C. Two’s complement format.

2.3 STATUS REGISTER

(Read Only Address 02h):

D7

D6

D5

D4

D3

D2

D1

D0

0

LHIGH

0

RHIGH

0

OPEN

RCRIT

LCRIT

Power up default is with all bits “0” (zero).

D0: LCRIT: When set to a 1 indicates an Local Critical Temperature alarm.

D1: RCRIT: When set to a 1 indicates a Remote Diode Critical Temperature alarm.

D2: D2OPEN: When set to 1 indicates a Remote Diode disconnect.

D4: D2RHIGH: When set to 1 indicates a Remote Diode HIGH Temperature alarm.

D6: LHIGH: When set to 1 indicates a Local HIGH Temperature alarm.

D7, D5, and D3: These bits are always set to 0 and reserved for future use.

2.4 MANUFACTURERS ID AND DIE REVISION (Stepping) REGISTERS

(Read Address FEh and FFh) Default value 01h for Manufacturers ID(FEh ).

2.5 CONFIGURATION REGISTER

(Read Address 03h/Write Address 09h):

D7

D6

D5

D4

D3

D2

D1

D0

INT mask

0

Remote

T_CRIT_A

mask

Remote

T_CRIT_A

mask

Remote

T_CRIT_A

mask

Local

T_CRIT_A

mask

INT Inversion

0

Power up default is with all bits “0” (zero).

D7: INT mask: When set to 1 INT interrupts are masked.

D5: T_CRIT mask, this bit must be set to a 1 before the T_CRIT setpoint is lowered below 127 in order for T_CRIT_A pin to

function properly.

D4: T_CRIT mask for Remote temperature, when set to 1 a remote temperature reading that exceeds T_CRIT setpoint will not

activate the T_CRIT_A pin.

D3: T_CRIT mask, this bit must be set to a 1 before the T_CRIT setpoint is lowered below 127 in order for T_CRIT_A pin to

function properly.

D2: T_CRIT mask for Local reading, when set to 1 a Local temperature reading that exceeds T_CRIT setpoint will not activate

the T_CRIT_A pin.

D1: INT active state inversion. When INT Inversion is set to a 1 the active state of the INT output will be a logical high. A low would

then select an active state of a logical low.

D6 and D0: These bits are always set to 0 and reserved for future use. A write of 1 will return a 0 when read.

2.6 LOCAL AND REMOTE HIGH SETPOINT REGISTERS (LHS, RHS)

(Read Address 05h, 07h/Write Address 0Bh, 0Dh):

D7

D6

D5

D4

D3

D2

D1

D0

MSB

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

D7–D0: HIGH setpoint temperature data. Power up default is LHIGH = RHIGH=127˚C.

2.7 T_CRIT REGISTER (TCS)

(Read Address 42h/Write Address 5Ah):

D7

D6

D5

D4

D3

D2

D1

D0

MSB

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

LSB

D7–D0: T_CRIT setpoint temperature data. Power up default is T_CRIT = 127˚C.

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