USB84604 datasheet(12/61 Pages) MICROCHIP

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USB84604

DS60001295C-page 12

 2014-2016 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 dis-

able the associated port.

See Note 2 for more information on configuration

straps.

I2C/SMBus Interface

1I2C Serial

Clock Input

SCL

I_SMB

I2C/SMBus serial clock output (Bridging)

SMBus Clock

SMBCLK

I_SMB

I2C/SMBus serial clock input

General Pur-

pose I/O 2

PIO2

IS/O8/

OD8

General purpose I/O 2

1I2C Serial

Data

SDA

IS/OD8

I2C bidirectional serial data

SMBus Serial

Data

SMBDATA

IS/OD8

SMBus bidirectional serial data

General Pur-

pose I/O 45

PIO45

IS/O8

OD8

General purpose I/O 45

SPI Master Interface

SPI Chip

Enable

Output

SPI_CE_N

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

SPI clock output

General Pur-

pose I/O 4

PIO4

IS/O6/

OD6

General purpose I/O 4

Note:

If the SPI is disabled, by setting the

SPI_MASTER_DIS bit in the UTIL_-

CONFIG1 register, this pin may be

used as PIO4.

TABLE 3-1:

PIN DESCRIPTIONS (CONTINUED)

Num Pins

Name

Symbol

Buffer

Type

Description

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