GPIO66 datasheet(14/60 Pages) MICROCHIP

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USB5806

DS00002236D-page 14

 2016-2018 Microchip Technology Inc.

TABLE 3-5:

SPI INTERFACE

Name

Symbol

Buffer

Type

Description

SPI Chip Enable

SPI_CE_N

I/O12

This is the active low SPI chip enable output. If the SPI

interface is enabled, this pin must be driven high in

power-down states.

SPI Clock

SPI_CLK

I/O-U

This is the SPI clock out to the serial ROM. If the SPI

interface is disabled, by setting the SPI_DIS-ABLE bit in

the UTIL_CONFIG1 register, this pin becomes GPIO4. If

the SPI interface is enabled this pin must be driven low

during reset.

SPI Data Output

SPI_DO

I/O-U

SPI data output, when configured for SPI operation.

SPI Data Input

SPI_DI

I/O-U

SPI data input, when configured for SPI operation.

Note:

If SPI memory device is not used, these pins may not be simply floated. These pins must be handled per

their respective alternate pin functions descriptions (C_ATTACH2, C_ATTACH3, CFG_BC_EN,

CFG_NON_REM).

TABLE 3-6:

USB TYPE-C CONNECTOR CONTROLS

Name

Symbol

Buffer

Type

Description

USB Type-C

Attach Control

Input 0-3

C_ATTACH[0:3]

(PD)

USB Type-C attach control input.

This pin indicates to the hub when a valid USB Type-C

attach has been detected. This pin is used by the hub to

enable the USB 3.1 Gen 1 PHY when a Type-C connec-

tion is present. When there is no USB Type-C connection

present, the USB 3.1 Gen 1 PHY is disabled to reduce

power consumption.

This pin behaves as follows:

- 1: USB Type-C attach detected, turn respective

USB 3.1 Gen 1 PHY on.

- 0: No USB Type-C attach detected, turn respec-

tive USB 3.1 Gen 1 PHY off.

When using legacy USB Type-A and Type-B connectors,

pull these pins to 3.3V to permanently enable all USB 3.1

PHYs.

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