USB2524 datasheet(10/58 Pages) MICROCHIP

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USB2524

DS00001588B-page 10

 2013 - 2016 Microchip Technology Inc.

Assign

Downstream

Ports to Upstream

Host Ports

PRT_ASSIGN

[3:0]

Port Assign Interface: Operates in either Embedded mode,

or Peripheral mode. See Section 6.0, "Assigning Ports" for

additional details.

SERIAL PORT INTERFACE

Serial Data/SMB

Data

SDA/SMBDATA

IOSD12

(Serial Data)/(SMB Data) signal.

Serial Clock/SMB

Clock

Configuration

Programming

Select

SCL/SMBCLK/

CFG_SEL0

IOSD12

(Serial Clock)/(SMB Clock) signal.

CFG_SEL0: The logic state of this multifunction pin is

internally latched on the rising edge of RESET_N

(RESET_N negation), and will determine the hub

configuration method as described in Table 4-2.

Configuration

Programming

Select

CFG_SEL1

The logic state of this pin is internally latched on the rising

edge of RESET_N (RESET_N negation), and will determine

the hub configuration method as described in Table 4-2.

Configuration

Programming

Select

CFG_SEL2

The logic state of this pin is internally latched on the rising

edge of RESET_N (RESET_N negation), and will determine

the hub configuration method as described in Table 4-2.

TABLE 4-2:

SMBUS OR EEPROM INTERFACE BEHAVIOR

Name

Function

CFG_SEL2

CFG_SEL1

CFG_SEL0

SMBus or EEPROM interface behavior.

Internal Default Configuration

• PRT_ASSIGN[3:0] = Embedded Mode.

• Strap options on pins LED_A[4:1]_N are enabled.

• LED Mode = USB Mode

Configured as an SMBus slave for external download of

user-defined descriptors.

• SMBus slave address is :0101100

• Strap options on pins LED_A[4:1]_N are disabled

• LED Mode = See Section 8.0, "LED Interface Descrip-

tion"

Internal Default Configuration

• PRT_ASSIGN[3:0] = Peripheral Mode (Level Triggered)

• Strap options on pins LED_A[4:1]_N are enabled.

• No support for unassigned Ports.

• LED Mode = USB Mode

011

2-wire (I2C) EEPROMS are supported,

• LED Mode = See Section 8.0, "LED Interface Descrip-

tion"

TABLE 4-1:

SWITCHING HUB PIN DESCRIPTIONS (CONTINUED)

Name

Symbol

Type

Function

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USB2524 数据表(PDF) 10 Page - Microchip Technology

USB2524 数据表(HTML) 10 Page - Microchip Technology

Html Pages

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