USB5926CSLASHKD datasheet(37/65 Pages) MICROCHIP

37 / 65 page

USB5926C

DS00003190B-page 37



2019 - 2021 Microchip Technology Inc.

To maximize compatibility with various port power control topologies, the parameters tocs_single and tocs_double are con-

figurable via the Overcurrent Minimum Pulse Width Register and Overcurrent Inactive Timer Register.

The pin also has a turn-on “lockout” feature where the state of the pin is ignored for a configured amount of time imme-

diately after port power is turned on. This prevents slow ramp times due to parasitic resistance/capacitance attached to

the pin from triggering false overcurrent detections. This parameter is configurable via the Overcurrent Lockout Timer

FIGURE 8-9:

DOUBLE LOW PULSE OVERCURRENT DETECTION

TABLE 8-2:

OVERCURRENT MINIMUM PULSE WIDTH REGISTER

OCS_MIN_WIDTH

(30EAh)

Overcurrent Detection Pulse Window

BIT

Name

R/W

Description

7:4

Reserved

3:0

OCS_MIN_WIDTH

R/W

The minimum overcurrent detection pulse width (tocs_single) is config-

ured in this register.

The range can be configured in 1ms increments from 0ms to 5ms.

0000 - 0ms minimum overcurrent detection pulse width

0001 - 1ms minimum overcurrent detection pulse width

0010 - 2ms minimum overcurrent detection pulse width

0011 - 3ms minimum overcurrent detection pulse width

0100 - 4ms minimum overcurrent detection pulse width

0101 - 5ms minimum overcurrent detection pulse width [Default]

TABLE 8-3:

OVERCURRENT INACTIVE TIMER REGISTER

OCS_INACTIVE_TIMER

(30EBh)

Overcurrent Inactive Timer After First Overcurrent Detection

BIT

Name

R/W

Description

7:0

OCS_INACTIVE_TIMER

R/W

This register configures the timer within which a double low pulse trig-

gers an overcurrent detection event (tocs_double).

The timer can be incremented in 1ms steps. The default value is

20ms (14h).

Note:

This register should never be set to 00h.

PRT_CTLx

IS VIL

tocs_double

USB5926C/KD 数据表(PDF) 37 Page - Microchip Technology

USB5926C/KD 数据表(HTML) 37 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65

数据表下载