Silex technology SX-550 manual LEDs and General Purpose IO Signals, LED and Gpio Descriptions

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Evaluation	CN210	I/O	Drive High/Low		Description
Daughtercard	GPIO
GPIO
9	50	O or I/O	6/6 mA	LED_2 or used as a GPIO
				1= off
				0	= illuminated
10	51	O or I/O	6/6 mA	LED_3 or used as a GPIO
				1= off
				0	= illuminated
	43	O	6/6 mA	SPI chip select
	44	O	6/6 mA	Ethernet PHY
				1	= power down
				0	= off (default)
	47	O	6/6 mA	Ethernet PHY
				1	= not reset (default)
				0	= reset#
	52	I	6/6 mA	PCI_LED2YP input
	53	I	6/6 mA	PCI Power Management Event#
				input
	54	O	6/6 mA	PCI Clock
				1	= clock off
				0	= run# (default)

LEDs and General Purpose IO Signals

The LEDs are connected to the 10 GPIOs for easy viewing of signal activity. The first 7 GPIOs drive the first 7 LEDs, D4 to D10. The last 3 GPIOs 8 to 10 drive LEDs D1 to D3. Logic 0 and 0 volts on GPIO_x illuminates the LED.

Table 9 LED and GPIO Descriptions

GPIO

LED

	GPIO_1		D4
	GPIO_2		D5
	GPIO_3		D6
	GPIO_4		D7
	GPIO_5		D8
	GPIO_6		D9
	GPIO_7		D10
	GPIO_8		D1 orange
	GPIO_9		D2 yellow
Page 16		silex		SX-550 Evaluation Daughtercard
				Hardware Configuration

Part Number 40183-101