UCS81003 datasheet(61/108 Pages) MICROCHIP

61 / 108 page

 2014 Microchip Technology Inc.

DS20005334A-page 61

UCS81003

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 condi-

tions, it will set the ILIM value to ITEST and then turn on

the port power switch and start 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.

Name

Bits

Address

Cof

Default

Auto-Recovery

Configuration

1Ch

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

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.

= 10 ms

= 15 ms

= 20 ms

= 25 ms

bit 1-0

VTST_SW<1:0>: Sets the VTEST value as shown below.

= 250 mV

= 500 mV

=750 mV

= 1000 mV

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