UCS2113 datasheet(45/62 Pages) MICROCHIP

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DS20005680B-page 45

UCS2113

8.5

Auto-Recovery Register

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. Once the Auto-Recovery

fault

handling

algorithm

has

checked

the

overtemperature and back-drive conditions, it will set

the ILIM value to ITEST and then turn on the port power

switch and start the tTST 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 restarted for Auto Recovery.

AUTO RECOVERY CONFIGURATION REGISTER (ADDRESS 15H)

R/W-0

R/W-1

R/W-0

R/W-1

R/W-0

R/W-1

R/W-0

LATCHS

TCYCLE<2:0>

TTST<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

LATCHS: Latch Set - Controls the fault-handling routine that is used in the case that an error is detected.

1 = Error state will be latched. In order for the UCS2113 to return to normal Active state, the ERR bit

must be cleared by the user.

0 = The UCS2113 will automatically retry when an error condition is detected.

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

100 = 35 ms

101 = 40 ms

110 = 45 ms

111 = 50 ms

bit 3-2

TTST<1:0>: Retry Duration timer - Sets the tTST as shown below

00 = 10 ms

01 = 15 ms

10 = 20 ms

11 = 25 ms

bit 1-0

VTST_SW: Short-circuit voltage threshold VTEST that must be crossed during retries to declare the short

removed

00 = 250 mV

01 = 500 mV

10 = 750 mV

11 = 1000 mV

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