USB2517 datasheet(16/58 Pages) MICROCHIP

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USB2517/USB2517I

DS00001598B-page 16

 2013-2016 Microchip Technology Inc.

5.2

Buffer Type Descriptions

2-Wire

I2C EEPROMS are supported

• Strap Options are Disabled

• All Settings are Controlled by Registers

Internal Default Configuration

• Strap Options are Disabled

• Dynamic Power Switching is Enabled

Internal Default Configuration

• Strap Options are Disabled

• Dynamic Power Switching is Enabled

• LED Mode = USB

Internal Default Configuration

• Strap Options are Disabled

Internal Default Configuration

• Strap Options are Disabled

• LED Mode = USB

• Ganged Power Switching

• Ganged Over-Current Sensing

TABLE 5-3:

USB2517/USB2517I BUFFER TYPE DESCRIPTIONS

Buffer

Description

Input.

IPD

Input with internal weak pull-down resistor.

IPU

Input with internal weak pull-up resistor.

Input with Schmitt trigger.

O12

Output 12mA.

I/O12

Input/Output buffer with 12mA sink and 12mA source.

I/OSD12

Open drain...12mA sink with Schmitt trigger, and must meet

I2C-Bus Specification

Version 2.1 requirements.

ICLKx

XTAL clock input.

OCLKx

XTAL clock output.

I-R

RBIAS.

IO-U

Analog Input/Output Defined in USB specification.

TABLE 5-2:

USB2517I SMBUS OR EEPROM INTERFACE BEHAVIOR (CONTINUED)

CFG_SEL2

CFG_SEL1

CFG_SEL0

SMBus or EEPROM Interface Behavior

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