UCS1002-3 datasheet(63/114 Pages) MICROCHIP

63 / 114 page

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DS20006852A-page 63

UCS1002-3

10.7

Auto-Recovery Configuration

The contents of this register are retained in Sleep.

The Auto-Recovery Configuration register sets the

parameters used when the Auto-Recovery Fault

Handling algorithm is invoked (see Section 7.5.1

“Auto-Recovery Fault Handling”).

Once the Auto-Recovery Fault Handling algorithm has

checked

the

overtemperature

and

back-drive

conditions, it sets the ILIM value to ITEST and then turns

ON the port power switch and starts the tRST timer. If

after the timer has expired, the VBUS voltage is less

than VTEST, then it is assumed that a short-circuit

condition is present and the Error state is reset.

bit 15-0

CHTHR[15:1]: Charge Rationing Threshold

LSB = 2.776 mAh

Name

Bits Address

Cof

Default

Auto-Recovery

Configuration

81Ch

R/W

2Ah

U-x

R/W-0

R/W-1

R/W-0

R/W-1

R/W-0

R/W-1

R/W-0

—

TCYCLE[2:0]

TRST_SW[1:0]

VTST_SW[1:0]

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

Unimplemented

bit 6-4

TCYCLE[2:0]: Defines the delay (tCYCLE) after the Error state is entered before the Auto-Recovery Fault

Handling algorithm is started as shown below.

000 = 15 ms

001 = 20 ms

010 = 25 ms (default)

011 = 30 ms

101 = 40 ms

110 = 45 ms

111 = 50 ms

bit 3-2

TRST_SW[1:0]: Sets the tRST time as shown as shown below.

00 = 10 ms

01 = 15 ms

10 = 20 ms (default)

11 = 25 ms

bit 1-0

VTST_SW[1:0]: Sets the VTEST value as shown below.

00 = 250 mV

01 = 500 mV

10 = 750 mV (default)

11 = 1000 mV

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