Specifications

18 Altera Corporation
EPXA1 Development Board Hardware Reference Manual
Function-Specific LEDs
LEDs are also used for specific application functions, such as the
configuration, RS-232 and Ethernet interfaces. Table 9 lists the function-
specific LEDs, their power supply status, their connection details, and
their functions.
Table 8. DG1 LED Interface Characteristics
LED Reference EPXA1 I/O Pin Signal Voltage (V)
DG1_J W17 USER_LED9 3.3
DG1_I W18 USER_LED8 3.3
DG1_H W20 USER_LED7 3.3
DG1_G W21 USER_LED6 3.3
DG1_F W22 USER_LED5 3.3
DG1_E Y17 USER_LED4 3.3
DG1_D Y18 USER_LED3 3.3
DG1_C Y19 USER_LED2 3.3
DG1_B Y20 USER_LED1 3.3
DG1_A Y21 USER_LED0 3.3
Table 9. Function-Specific LED Usage
Signal Board Reference EPXA1 I/O Pin
(or Board
Connector)
Description Voltage (V)
INIT_DONE D15 K7 Used by FPGA initialization; signifies
that initialization is complete
3.3
VCC_5V D12 5-V power indicator 5
VCC_3V3 D13 3.3-V power indicator 3.3
VCC_1V8 D14 1.8-V power indicator 1.8
TXD D2 FPGA UART signal
indicator 3.3
RXD D3 FPGA UART signal
indicator 3.3
XA-TXD D4 Embedded stripe UART signal indicator 3.3
XA-RXD D7 Embedded stripe UART signal indicator 3.3
TX RJ1 Ethernet signal indicator 3.3
RX RJ1 Ethernet signal indicator 3.3