SMSC USB2514 TYPE, BUFFER, SYMBOL, 36 QFN, 48 QFN, DESCRIPTION, Table 3.1 USB2514 Pin Descriptions (continued)

				USB 2.0 High-Speed 4-Port Hub Controller
				Datasheet
		Table 3.1 USB2514 Pin Descriptions (continued)
			BUFFER
SYMBOL	36 QFN	48 QFN	TYPE	DESCRIPTION
LED_A[4:1]_N/	n/a	13	I/O12	Port LED Indicators & Port Swap strapping option
PRT_SWP[4:1]		23		Indicator LED for ports 1-4. Will be active low when LED
		25
		37		support is enabled via EEPROM or SMBus.
				If this strap is enabled by package and configuration
				settings (see Table 3.2), this pin will be sampled at
				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.
LED_B4_N	n/a	12	I/O12	Enhanced Port 4 LED
				Enhanced Indicator LED for port 4. Will be active low
				when LED support is enabled via EEPROM or SMBus.
LED_B3_N/	n/a	22	I/O12	Enhanced Port 3 LED & Gang Power and Overcurrent
GANG_EN				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 Table 3.2), this pin will be sampled at
				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.
LED_B[2:1]_N/	n/a	24	I/O12	Enhanced Port [2:1] LED & Phy Boost strapping option
BOOST[1:0]		36		Enhanced Indicator LED for ports 1 & 2. Will be active
				low when LED support is enabled via EEPROM or
				SMBus.

Revision 1.98 (11-19-07)	10	SMSC USB2514
	DATASHEET