EMC1412 datasheet(21/46 Pages) MICROCHIP

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DS20005273B-page 21

EMC1412

6.3

Status Register

The Status Register reports the operating status of the

Internal Diode and External Diode channels. When any

of the bits are set (excluding the BUSY bit) either the

ALERT or THERM pin is being asserted.

The ALERT and THERM pins are controlled by the

respective

consecutive

alert

counters

(see

Section 6.11 “Consecutive ALERT Register”) and

will not be asserted until the programmed consecutive

alert count has been reached. The status bits (except

E1THERM and ITHERM) will remain set until read

unless the ALERT pin is configured as a second

THERM output (see Section 4.3.2 “ALERT Pin Com-

parator Mode””).

Name

Bits

Address

Type

Default

Status

02h

00h

STATUS REGISTER (ADDRESS 02H)

RC-0

BUSY

IHIGH

ILOW

EHIGH

ELOW

FAULT

ETHERM

ITHERM

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

RC = Read-then-clear bit

bit 7

BUSY: This bit indicates that the ADC is currently converting. This bit does not cause either the ALERT

or THERM pins to be asserted.

bit 6

IHIGH: This bit is set when the Internal Diode channel exceeds its programmed high limit. When set,

this bit will assert the ALERT pin.

bit 5

ILOW: This bit is set when the Internal Diode channel drops below its programmed low limit. When

set, this bit will assert the ALERT pin.

bit 4

EHIGH: This bit is set when the External Diode channel exceeds its programmed high limit. When set,

this bit will assert the ALERT pin.

bit 3

ELOW: This bit is set when the External Diode channel drops below its programmed low limit. When

set, this bit will assert the ALERT pin.

bit 2

FAULT: This bit is asserted when a diode fault is detected. When set, this bit will assert the ALERT pin.

bit 1

ETHERM: This bit is set when the External Diode channel exceeds the programmed Therm Limit.

When set, this bit will assert the THERM pin. This bit will remain set until the THERM pin is released

at which point it will be automatically cleared.

bit 0

ITHERM: This bit is set when the Internal Diode channel exceeds the programmed Therm Limit. When

set, this bit will assert the THERM pin. This bit will remain set until the THERM pin is released at which

point it will be automatically cleared.

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