USB4624 Datasheet, PDF (31/58 Pages) SMSC Corporation – USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

USB 2.0 HSIC Hi-Speed 4-Port Hub Controller
Datasheet
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.
Table 6.1 PRT_DIS_Mx/PRT_DIS_Px Configuration Definitions
PRT_DIS_MX/PRT_DIS_PX
‘0’
‘1’
DEFINITION
Port x D-/D+ Signal is Enabled (Default)
Port x D-/D+ Signal is Disabled
6.3.2 SPI Speed Select (SPI_SPD_SEL)
This strap is used to select the speed of the SPI as follows:
Table 6.2 SPI_SPD_SEL Configuration Definitions
SPI_SPD_SEL
DEFINITION
‘0’
30 MHz SPI Operation (Default)
‘1’
60 MHz SPI Operation
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.
 2014 Microchip Technology Inc.
DS00001717A-page 31