USB5532B datasheet(36/68 Pages) MICROCHIP

36 / 68 page

 2012 - 2015 Microchip Technology Inc.

DS00001679C-page 36

USB5532B

Note 5-1

Status registers do not have a default value because the status can change depending on system

conditions.

5.6.1

ACCESSING RUNTIME REGISTERS

The Configuration Register Access operation allows the SMBus Master to read or write to the internal registers of the

hub. When the Configuration Register Access command is sent the hub will interpret the memory starting at offset 00h

as follows:

093Eh

R/W

PRT_PWR_PU

Port Power Pull-up Resistor Register

00h

3C00h

R/W

PRT_PWR_SEL1

Port 1 Power Select Register

03h

3C04h

R/W

PRT_PWR_SEL2

Port 2 Power Select Register

03h

3C20h

R/W

OCS_CFG_SEL1

Port 1 OCS Select Register

01h

3C24h

R/W

OCS_CFG_SEL2

Port 2 OCS Select Register

01h

5246h

R/W

CDP_DETECT

Charging Downstream Detected Register

Note 5-1

525Ah

R/W

OSC_GANG

OCS Gang Control Register

00h

525Bh

R/W

OCS_GANG_GPIO

OCS Gang Signal Select Register

00h

60CAh

R/W

HS_UP_BOOST

USB Upstream Boost Register

00h

60CCh

R/W

HS_UP_SENSE

USB Upstream VariSense Register

00h

61C0h

R/W

SS_UP_STATE

USB3 Upstream Link State Register

Note 5-1

64CAh

R/W

HS_P1_BOOST

USB Port 1 Boost Register

00h

64CCh

R/W

HS_P1_SENSE

USB Port 1 VariSense Register

00h

65C0h

R/W

SS_P1_STATE

USB3 Port 1 Link State

Note 5-1

68CAh

R/W

HS_P2_BOOST

USB Port 2 Boost Register

00h

68CCh

R/W

HS_P2_SENSE

USB Port 2 VariSense Register

00h

69C0h

R/W

SS_P2_STATE

USB3 Port 2 Link State

Note 5-1

TABLE 5-13:

MEMORY FORMAT FOR CONFIGURATION REGISTER ACCESS

RAM Address

Description

Notes

0000h

Direction

0 = Register Write, 1 = Register Read.

0001h

Data Length

Number of bytes to Read/Write when executing the command.

0002h

Configuration

Address MSB

The upper byte of the 16-bit configuration register address.

0003h

Configuration

Address LSB

The lower byte of the 16-bit configuration register address.

0004h

Data1

The first byte of data to write to or read from the Configuration Address.

...

0004h+N

DataN

The Nth byte of data to write to or read from the Configuration Address, N

is equal to the Data Length.

TABLE 5-12:

CONFIGURATION REGISTER MEMORY MAP (CONTINUED)

ADDR

R/W

Name

Function

INIT

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