NSLU2-Linux

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The IXP420 CPU has 16 General Purpose Input/Output (GPIO) pins which are used to interface to external hardware. In the case of the DSM-G600, the GPIO pins are used to monitor the buttons, control some of the LEDs, connect to the RTC, IDE controller and USB 2.0 controller.

GPIO	Function	Connected to:	Configured as:
GPIO[0]	Power LED (0 = Blink 1 = On)		Output
GPIO[1]	??
GPIO[2]	Power Control (1 = Turn Power Off)		Output
GPIO[3]	Reset Button (IRQ 20) (0 = Pressed)		Input
GPIO[4]	I²C SCL	RTC - SCL
GPIO[5]	I²C SDA	RTC - SDA
GPIO[6]	PCI INTF (IRQ 23)		Input
GPIO[7]	PCI INTE (IRQ 24)		Input
GPIO[8]	PCI INTD (IRQ 25)		Input
GPIO[9]	PCI INTC (IRQ 26)		Input
GPIO[10]	PCI INTB (IRQ 27)		Input
GPIO[11]	PCI INTA (IRQ 28)		Input
GPIO[12]	Hardware Reset		Output?
GPIO[13]	PCI Reset		Output
GPIO[14]	WLAN LED (0 = On)		Output
GPIO[15]	Power Button (1 = Pressed)		Input

 3 additional LEDs exist, but do not have corresponding GPIO Connections:
 HDD
 HDD-Full
 USB

view · edit · print · history · Last edited by mwester.
Based on work by mwester.
Originally by dyoung.

Page last modified on November 24, 2006, at 02:18 AM

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