USB4624 datasheet(31/58 Pages) MICROCHIP

31 / 58 page

USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

Datasheet

 2014 Microchip Technology Inc.

DS00001717A-page 31

6.3.1

Port Disable (PRT_DIS_Mx/PRT_DIS_Px)

These configuration straps disable the associated USB ports D- and D+ signals, respectively, where

“x” is the USB port number. Both the negative “M” and positive “P” port disable configuration straps for

a given USB port must be tied high at reset to disable the associated port.

6.3.2

SPI Speed Select (SPI_SPD_SEL)

This strap is used to select the speed of the SPI as follows:

Note: If the latched value on reset is 1, this pin is tri-stated when the chip is in the suspend state. If

the latched value on reset is 0, this pin is driven low during a suspend state.

Table 6.1 PRT_DIS_Mx/PRT_DIS_Px Configuration Definitions

PRT_DIS_MX/PRT_DIS_PX

DEFINITION

‘0’

Port x D-/D+ Signal is Enabled (Default)

‘1’

Port x D-/D+ Signal is Disabled

Table 6.2 SPI_SPD_SEL Configuration Definitions

SPI_SPD_SEL

DEFINITION

‘0’

30 MHz SPI Operation (Default)

‘1’

60 MHz SPI Operation

USB4624 数据表(PDF) 31 Page - Microchip Technology