UPD301ASLASHKYX datasheet(12/40 Pages) MICROCHIP

12 / 40 page

UPD301A

DS00002838B-page 12

 2018-2019 Microchip Technology Inc.

Port Control

PRT_CTRL/OCS

I/O2/OD2 When the UPD301A is in the Source Role, any external

VBUS/VCONN/temperature faults may be wire-ORed on

OCS to indicate a default has occurred, prompting the

device’s firmware to make VBUS safe (open load switches,

discharge VBUS, and enter error recovery).

When the UPD301A is in the Source Role, this pin is a bi-

directional signal indicating various faults to a load switch,

DC/DC converter, DFP or hub. This pin is nominally config-

ured as an output, sending faults to a load switch or DC/DC

converter. However, if a different fault condition (e.g. over-

voltage) is detected internally by the UPD301A, this pin is

reconfigured as an open-drain output with an internal pull-

down enabled and asserted low for a duration to allow

detection by the hub’s PRT_ENx/OCSx_N input, and is

then reconfigured back to an input.

Note:

For proper operation, a 100kOhm pull-up to

+3.3V should be applied to this pin externally.

Type-C

Orientation

ORIENTATION_N

This signal is used to indicate which CC pin is terminated

by the attached device. When asserted CC = CC1, other-

wise CC=CC2.

Note:

For proper operation, a 200kOhm pull-up to

+3.3V should be applied to this pin externally.

System Reset

Input

RESET_N_IN

Active low system reset input. This reset is used for reset of

the UPD301A by a companion MCU.

System Reset

Output

RESET_N_OUT

Active low system reset output. This pin must be connected

to RESET_N_COM for proper operation.

System Reset

Common

RESET_N_COM

This pin must be connected to RESET_N_OUT for proper

operation.

No Connect

For proper operation, this pin must be left unconnected.

Configuration Straps

Power Delivery

Power Select 0

Configuration

Strap

PDP_SEL0

I/O2

This multi-level configuration strap is sampled after system

reset to specify a Power Delivery Power (PDP) which

defines the voltages and currents to be used by the

UPD301A Power Delivery Objects (PDOs).

Refer to Section 3.3, "Configuration Straps" for additional

information.

Power Delivery

Power Select 1

Configuration

Strap

PDP_SEL1

I/O2

For a two port system, this multi-level configuration strap is

sampled after a system reset to specify a Power Delivery

Power (PDP) which defines the voltages and currents to be

used by the optional external UPD350 Power Delivery

Objects (PDOs).

Refer to Section 3.3, "Configuration Straps" for additional

information.

I2C Address

Select

Configuration

Strap

I2C_ADDR_SEL

AIO

This multi-level configuration signal is sampled after a sys-

tem reset to select the device’s default I2C slave address.

Refer to Section 3.3, "Configuration Straps" for additional

information.

TABLE 3-2:

PIN DESCRIPTIONS (CONTINUED)

Name

Symbol

Buffer

Type

Description

UPD301A/KYX датащи(PDF) 12 Page - Microchip Technology

UPD301A/KYX датащи(HTML) 12 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

датащи скачать

ссылки URL