MIC24045 datasheet(23/46 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005568A-page 23

MIC24045

5.1

STATUS Register

In the read-only STATUS registers, diagnostic informa-

tion is provided. Bits can be F = latched (Flag) or

S = non-latched (Status).

Flag bits are set when the corresponding Fault condi-

tion has occurred and do not return-to-zero once the

Fault condition has ceased. Flags can only be cleared

by writing ‘1’ in Bit 0 of the COMMAND register 4h, or

by power cycling. Status bits are set when the corre-

sponding Fault condition has occurred and return to

zero automatically once the Fault condition has

ceased.

Default bits value at power-up is zero, except for Bit 2

(which will always be read as ‘1’) and Bit 1, which is ‘1’

if no Fault conditions are detected.

STATUS – STATUS REGISTER (ADDRESS 0h)

R-0

R’0’

R-0

R’1’

R-1

R-0

OCF

ThSDF

ThWrnF

Reserved

EnS

Reserved

PGS

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

OCF:

Over-Current Flag bit. OCF is set high whenever an over-current event occurs. Latched.

bit 6

ThSDF:

Thermal Shut-down Flag bit. ThSDF is set high whenever a Thermal Shutdown occurs.

Latched.

bit 5

ThWrnF:

Thermal Warning Flag bit. ThWrnF is set high whenever a Thermal Warning occurs.

Latched.

bit 4

Reserved:

Flag bit. Always read as zero.

bit 3

EnS:

Enable Pin Status bit. EnS reflects the logic value present on pin EN. Non-latched.

bit 2

Reserved:

Status bit. Always read as ‘1’.

bit 1

Reserved:

Default status at POR is ‘1’ (no faults detected).

bit 0

PGS:

Power-Good Status bit. PGS reflects the logic value present on pin PG. Non-latched.

SETTING 1 – SETTING 1 REGISTER (ADDRESS 1h)

RW-V

U-0

ILIM1

ILIM0

Freq2

Freq1

Freq0

Reserved

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

V = factory-programmed POR value(1)

Note 1:

Default Status settings at power-up can be changed at the factory. Standard selections are described in

Section 6.0 “MIC24045 Default Settings Values at Power-Up”

. Overwriting default settings by I2C has

no permanent effect and values will return to factory default values upon power cycling.

Changing Setting 1 Register values while power delivery is enabled is not recommended. To change set-

tings by I2C, set EN pin low first, then write the new configuration, and finally, set EN pin high again to

resume power delivery.

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