USB2514I SMSC Corporation, USB2514I Datasheet - Page 10

• Manufacturer Part Number: USB2514I
• Description: Industrial Temperature Rated USB 2.0 High-Speed 4-Port Hub Controller
• Manufacturer: SMSC Corporation

Revision 1.98 (11-19-07)
LED_A[4:1]_N/
PRT_SWP[4:1]
LED_B[2:1]_N/
BOOST[1:0]
LED_B3_N/
LED_B4_N
GANG_EN
SYMBOL
36 QFN
n/a
n/a
n/a
n/a
Table 3.1 USB2514 Pin Descriptions (continued)
48 QFN
13
23
25
37
12
22
24
36
BUFFER
TYPE
I/O12
I/O12
I/O12
I/O12
DATASHEET
Industrial Temperature Rated USB 2.0 High-Speed 4-Port Hub Controller
10
Enhanced Port 3 LED & Gang Power and Overcurrent
Port LED Indicators & Port Swap strapping option
Indicator LED for ports 1-4. Will be active low when LED
support is enabled via EEPROM or SMBus.
If this strap is enabled by package and configuration
settings (see
RESET_N negation to determine the electrical
connection polarity of the downstream USB Port pins
(USB_DP and USB_DM).
Also, the active state of the LED will be determined as
follows:
‘0’ = Port Polarity is normal, and the LED is active high.
‘1’ = Port Polarity (for USB_DP and USB_DM) is
swapped, and the LED is active low.
Enhanced Port 4 LED
Enhanced Indicator LED for port 4. Will be active low
when LED support is enabled via EEPROM or SMBus.
Strap Option
Enhanced Indicator LED for port 3. Will be active low
when LED support is enabled via EEPROM or SMBus.
GANG_EN: Selects between Gang or Individual Port
power and Over Current sensing.
If this strap is enabled by package and configuration
settings (see
RESET_N negation to determine the mode as follows:
‘0’ = Individual sensing & switching, and LED_B3_N is
active high.
‘1’ = Ganged sensing & switching, and LED_B3_N is
active low.
Enhanced Port [2:1] LED & Phy Boost strapping option
Enhanced Indicator LED for ports 1 & 2. Will be active
low when LED support is enabled via EEPROM or
SMBus.
Table
Table
3.2), this pin will be sampled at
3.2), this pin will be sampled at
DESCRIPTION
SMSC USB2514i
Datasheet