USB5534B datasheet(49/73 Pages) MICROCHIP

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 2012 - 2015 Microchip Technology Inc.

DS00001681C-page 49

USB5534B

5.6.27

PORT 3 OCS SELECT REGISTER

The bits in this register are configured via a configuration file. Users must not change the values of these settings

dynamically.

5.6.28

PORT 4 OCS SELECT REGISTER

The bits in this register are configured via a configuration file. Users must not change the values of these settings

dynamically.

5.6.29

CHARGING DOWNSTREAM DETECTED REGISTER

TABLE 5-44:

PORT 3 OCS SELECT REGISTER

OCS_CFG_SEL3

(0X3C28)

Port 3 OCS Select

Bit

Name

R/W

Description

7:4

Reserved

R/W

Reserved.

3:0

OCS_SEL

R/W

This selects the source for the port power for port1

0000b - The port is disabled

0001b - OCS comes from OCS pin

0010b - OCS comes from GPIO

1111b - OCS is force on (for testing)

All other values are reserved.

TABLE 5-45:

PORT 4 OCS SELECT REGISTER

OCS_CFG_SEL4

(0X3C2C)

Port 4 OCS Select

Bit

Name

R/W

Description

7:4

Reserved

R/W

Reserved.

3:0

OCS_SEL

R/W

This selects the source for the port power for port1

0000b - The port is disabled

0001b - OCS comes from OCS pin

0010b - OCS comes from GPIO

1111b - OCS is force on (for testing)

All other values are reserved.

TABLE 5-46:

CHARGING DOWNSTREAM DETECTED REGISTER

CDP_DETECT

(0X5246)

Charging Downstream Detected

Bit

Name

R/W

Description

7:4

Reserved

R/W

Reserved

P4_CDP

R/W

0 = No CDP handshake detected.

1 = Charging Downstream Port handshake detected prior to

enumeration.

P3_CDP

R/W

0 = No CDP handshake detected.

1 = Charging Downstream Port handshake detected prior to

enumeration.

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