USB2532 Datasheet, PDF (13/50 Pages) SMSC Corporation – USB 2.0 Hi-Speed 2-Port Hub Controller

USB 2.0 Hi-Speed 2-Port Hub Controller
Datasheet
NUM PINS
NAME
I²C Serial
Clock Input
SMBus Clock
Configuration
1
Select 0
Configuration
Strap
I²C Serial
Data
SMBus Serial
Data
Non-
1
Removable
Device 1
Configuration
Strap
Port 1 Over-
1
Current
Sense Input
Port 2 Over-
1
Current
Sense Input
UART
Receive Input
1
UART
Transmit
1
Output
Table 3.1 Pin Descriptions (continued)
SYMBOL
BUFFER
TYPE
DESCRIPTION
I²C/SMBUS INTERFACE
SCL
I_SMB I²C serial clock input
SMBCLK
CFG_SEL0
SDA
I_SMB
I_SMB
IS/OD8
SMBus serial clock input
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 bidirectional serial data
SMBDATA
IS/OD8 SMBus bidirectional serial data
NON_REM1
(Note 3.3)
OCS1_N
OCS2_N
UART_RX
UART_TX
IS
MISC.
IS
(PU)
IS
(PU)
IS
O8
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.
This active-low signal is input from an external
current monitor to indicate an over-current
condition on USB Port 1.
This active-low signal is input from an external
current monitor to indicate an over-current
condition on USB Port 2.
Internal UART receive input
Note:
This is a 3.3V signal. For RS232
operation, an external 12V translator is
required.
Internal UART transmit output
Note:
This is a 3.3V signal. For RS232
operation, an external 12V driver is
required.
 2014 Microchip Technology Inc.
DS00001701A-page 13