USB 2.0 Hi-Speed 2-Port Hub Controller
Datasheet
Table 3.1 Pin Descriptions (continued)
BUFFER
NUM PINS
NAME
SYMBOL
TYPE
DESCRIPTION
Remote
Wakeup
Indicator
SUSP_IND
OD8
Configurable sideband signal used to indicate
Suspend status (default) or Remote Wakeup
events to the Host.
Suspend Indicator (default configuration):
0 = Unconfigured, or configured and in USB
suspend mode
1 = Device is configured and is active
(i.e., not in suspend)
For Remote Wakeup Indicator mode:
Refer to Section 8.5, "Remote Wakeup Indicator
(SUSP_IND)," on page 48.
Refer to Section 6.3.1, "Non-Removable Device
(NON_REM[1:0])," on page 28 for information on
LED polarity when using this signal.
1
Local Power
Detect
LOCAL_PWR
IS
Detects the availability of a local self-power
source.
0 = Self/local power source is NOT available.
(i.e., device must obtain all power from upstream
USB VBUS)
1 = Self/local power source is available
See Note 3.2 for more information on this pin.
Non-
Removable
Device 0
Configuration
Strap
NON_REM0
(Note 3.3)
IS
This strap is used in conjunction with
NON_REM1 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.
High Speed
Indicator
HS_IND
O8
Indicates a high speed connection on the
upstream port. The active state of the LED will be
determined as follows:
If CFG_SEL1 = 0, HS_IND is active high.
If CFG_SEL1 = 1, HS_IND is active low.
Asserted = hub is connected at high speed
Negated = Hub is connected at full speed
1
Configuration
Select 1
Configuration
Strap
CFG_SEL1
IS
This strap is used in conjunction with CFG_SEL0
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.
SMSC USB2532
15
Revision 1.0 (06-17-13)
DATASHEET
SMSC [ SMSC CORPORATION ]
