USB2532 datasheet(13/50 Pages) MICROCHIP

13 / 50 page

USB 2.0 Hi-Speed 2-Port Hub Controller

Datasheet

 2014 Microchip Technology Inc.

DS00001701A-page 13

I2C/SMBUS INTERFACE

I2C Serial

Clock Input

SCL

I_SMB

I2C serial clock input

SMBus Clock

SMBCLK

I_SMB

SMBus serial clock input

Configuration

Select 0

Configuration

Strap

CFG_SEL0

I_SMB

This strap is used in conjunction with CFG_SEL1

to set the hub configuration method. Refer to

Section 6.3.2, "Configuration Select

(CFG_SEL[1:0])," on page 28 for additional

information.

See Note 3.4 for more information on

configuration straps.

I2C Serial

Data

SDA

IS/OD8

I2C bidirectional serial data

SMBus Serial

Data

SMBDATA

IS/OD8

SMBus bidirectional serial data

Non-

Removable

Device 1

Configuration

Strap

NON_REM1

(Note 3.3)

This strap is used in conjunction with

NON_REM0 to configure the downstream ports

as non-removable devices. Refer to Section

6.3.1, "Non-Removable Device

(NON_REM[1:0])," on page 28 for additional

information.

See Note 3.4 for more information on

configuration straps.

MISC.

Port 1 Over-

Current

Sense Input

OCS1_N

(PU)

This active-low signal is input from an external

current monitor to indicate an over-current

condition on USB Port 1.

Port 2 Over-

Current

Sense Input

OCS2_N

(PU)

This active-low signal is input from an external

current monitor to indicate an over-current

condition on USB Port 2.

UART

Receive Input

UART_RX

Internal UART receive input

Note:

This is a 3.3V signal. For RS232

operation, an external 12V translator is

required.

UART

Transmit

Output

UART_TX

Internal UART transmit output

Note:

This is a 3.3V signal. For RS232

operation, an external 12V driver is

required.

Table 3.1 Pin Descriptions (continued)

NUM PINS

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

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