USB4604 datasheet(16/62 Pages) MICROCHIP

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USB 2.0 HSIC Hi-Speed 4-Port Hub Controller

Datasheet

DS00001716A-page 16

 2014 Microchip Technology Inc.

Downstream

USB D-

(Port 4)

USBDN4_DM

AIO

Downstream USB Port 4 D- data signal.

Port 4 D-

Disable

Configuration

Strap

PRT_DIS_M4

This strap is used in conjunction with

PRT_DIS_P4 to disable USB Port 4.

0 = Port 4 D- Enabled

1 = Port 4 D- Disabled

Note:

Both PRT_DIS_P4 and PRT_DIS_M4

must be tied to VDD33 at reset to

disable the associated port.

See Note 3.3 for more information on

configuration straps.

I2C/SMBUS INTERFACE

I2C Serial

Clock Input

SCL

I_SMB

I2C serial clock input

SMBus Clock

SMBCLK

I_SMB

SMBus serial clock input

I2C Serial

Data

SDA

IS/OD8

I2C bidirectional serial data

SMBus Serial

Data

SMBDATA

IS/OD8

SMBus bidirectional serial data

SPI MASTER INTERFACE

SPI Chip

Enable

Output

SPI_CE_N

O12

Active-low SPI chip enable output.

Note:

If the SPI is enabled, this pin will be

driven high in powerdown states.

SPI Clock

Output

SPI_CLK

O12

SPI clock output

SPI Data

Output

SPI_DO

O12

SPI data output

SPI Speed

Select

Configuration

Strap

SPI_SPD_SEL

(PD)

This strap is used to select the speed of the SPI.

0 = 30MHz (default)

1 = 60MHz

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.

See Note 3.3 for more information on

configuration straps.

SPI Data

Input

SPI_DI

(PD)

SPI data input

Table 3.1 Pin Descriptions (continued)

NUM PINS

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

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