USB5734 datasheet(21/61 Pages) MICROCHIP

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DS00001854D-page 21

USB5734

3.4.5.2

Configuration 2 - FlexConnect Mode

When the CFG_STRAP is configured to this mode, the programmable function pins (PROG_FUNC[7:1]) are set to pro-

vide FlexConnect, an SMBus/I2C interface, and other additional features. Table 3-17 details the PROG_FUNC[7:1] pin

assignments in this mode.

TABLE 3-17:

CONFIGURATION 2 PROG_FUNC[7:1] FUNCTION ASSIGNMENT

Function

Buffer

Type

Description

PROG_FUNC1

HOST_TYPE0

O12

Port 0 USB Host Type

Tri-state: No USB host detected on Port 0

0: USB 3.1 Gen 1 Host detected on Port 0

1: USB 2.0 or USB 1.1 Host detected on Port 0

A USB 2.0 Host is considered detected when the USB 2.0 hub

address register holds a non-zero value. A USB 3.1 Gen 1

Host is considered detected when the USB 3.1 Gen 1 hub

address register holds a non-zero value.

PROG_FUNC2

HOST_TYPE1

Port 1 USB Host Type

Tri-state: No USB host detected on Port 1

0: USB 3.1 Gen 1 Host detected on Port 1

1: USB 2.0 or USB 1.1 Host detected on Port 1

A USB 2.0 Host is considered detected when the USB 2.0 hub

address register holds a non-zero value. A USB 3.1 Gen 1

Host is considered detected when the USB 3.1 Gen 1 hub

address register holds a non-zero value.

PROG_FUNC3

FLEX_STATE_N

O12

FlexConnect State Compliment Indicator

This signal reflects the inverse of the current state of FLEX-

CMD.

0: Flex Operation (Port 1 upstream, Port 0 downstream)

1: Normal Operation (Port 0 upstream, Port 1 downstream)

Note:

Refer to Section 8.2, "FlexConnect" for additional

information.

PROG_FUNC4

SMDAT

OD12

SMBus/I2C Data

The SMBus/I2C interface acts as SMBus slave or I2C bridge

dependent on the device configuration. Refer to Section 3.4.1,

"SPI/SMBus/I2C/UART Configuration (I2C_SLV_CFG[1:0])".

PROG_FUNC5

SMCLK

OD12

SMBus/I2C Clock

The SMBus/I2C interface acts as SMBus slave or I2C bridge

dependent on the device configuration. Refer to Section 3.4.1,

"SPI/SMBus/I2C/UART Configuration (I2C_SLV_CFG[1:0])".

PROG_FUNC6

FLEXCMD

FlexConnect Control

0: Normal Operation (Port 0 upstream, Port 1 downstream)

1: Flex Operation (Port 1 upstream, Port 0 downstream)

Note:

Refer to the Section 8.2, "FlexConnect" for addi-

tional information.

PROG_FUNC7

FLEX_STATE

O10

FlexConnect State Indicator

This signal reflects the current state of FLEXCMD.

0: Normal Operation (Port 0 upstream, Port 1 downstream)

1: Flex Operation (Port 1 upstream, Port 0 downstream)

Note:

Refer to Section 8.2, "FlexConnect" for additional

information.

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