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2.2.2. LED indicators

Table 2.3 lists the PB926EJ-S LED indicators and their function.

Table 2.3. LED Indicators
LED IDColorDeviceFunction
5V OKGreenD29Indicates that the 5V power supply is on
3V3 OKGreenD34Indicates that the 3V3 power supply is on
StandbyRedD39Indicates that the PB926EJ-S is in standby mode and the power is off. This LED only functions when power is supplied to the board via connector J35
ConfigAmberD44

Indicates that the PB926EJ-S is in configuration mode. Configuration mode is entered by fitting the CONFIG link J32 on the board and powering-up

The CONFIG link is a switch on some board versions.

FPGA ConfigYellowD6Directly indicates the status of the FPGA Config pushswitch S4. LED is off when the switch is pressed
DEV CHIP ReconfigBlueD3Directly indicates the status of the DEV CHIP Reconfig pushswitch S5. LED is off when the switch is pressed
ResetAmberD4Directly indicates the status of the Reset pushswitch S2. LED is off when the switch is pressed
GP (User) PushswitchGreenD5Directly indicates the status of the general purpose pushswitch S3. LED is off when the switch is pressed
GP (User) LEDs GreenD12-18, D20Eight general purpose LEDs. These LEDs are controlled individually by the lower eight bits of the SYS_LED register. See User switches and LEDs for further details
EthernetGreen YellowJ5Ethernet activity indicators. These LEDs are integral to the Ethernet connector J5 and are configured by writing to a register in the LAN91C111 fast Ethernet controller. See Ethernet interface for further details
Global DoneGreenD8Indicates that all the FPGA devices on the Logic Tiles have been configured
Local DoneGreenD7Indicates that the PB926EJ-S FPGA device has been configured
USB Debug BusyAmberD22Indicates that the embedded Real View ICE Micro Edition hardware is active
USB Debug OnGreenD23Indicates that the embedded RealView ICE Micro Edition hardware is enabled

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