GPIO4 datasheet(16/60 Pages) MICROCHIP

16 / 60 page

USB5806

DS00002236D-page 16

 2016-2018 Microchip Technology Inc.

Bias Resistor

RBIAS

I-R

A 12.0 k

Ω (+/- 1%) resistor is attached from ground to

this pin to set the transceiver’s internal bias settings.

Place the resistor as close to the device as possible with

a dedicated, low impedance connection to the GND

plane.

External 25 MHz

Crystal Input

XTALI

ICLK

External 25 MHz crystal input

External 25 MHz

Reference Clock

Input

CLKIN

ICLK

External reference clock input.

The device may alternatively be driven by a single-ended

clock oscillator. When this method is used, XTALO

should be left unconnected.

External 25 MHz

Crystal Output

XTALO

OCLK

External 25 MHz crystal output

Test

TESTEN

I/O12

Test pin.

This signal is used for test purposes and must always be

connected to ground.

No Connect

No connect.

For proper operation, this signal must be left uncon-

nected.

TABLE 3-7:

MISCELLANEOUS PIN DESCRIPTIONS (CONTINUED)

Name

Symbol

Buffer

Type

Description

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