Specifications

Altera Corporation 15
EPXA1 Development Board Hardware Reference Manual
10/100 Ethernet Parallel Interface
On the EPXA1 development board, the Ethernet interface consists of an
integrated MAC/PHY device and an RJ45 connector which includes the
transformer and LEDs.
Table 6 lists the LEDs built into the RJ45 connector.
Note:
(1) Although the default setting for LEDA ‘10/100 link detected’, the user can program
the LEDA and LEDB select signals by writing to the LED select signal registers.
The Ethernet and flash memory device share addresses and data on the
EBI.
Memory Interfaces
The EPXA1 development board supports the following types and
capacities of on-board memory, as listed in Table 7.
Figure 4 on page 16 shows the location of the on-board memory.
Table 6. Ethernet LEDs
Board Reference Signal Description
RJ1 LEDA LEDA Green LED. This defaults to being set on when the
10/100 link is detected (1)
RJ1 LEDB LEDB Unused (1)
Table 7. Development Board Memory Characteristics
Type Address Lines Data Lines Control Lines Memory Organization Size
SDR SDRAM 13 16 10 4 M × 16 × 4 banks 32 Mbytes; 16-bit
Flash 22 16 5 2 × 4 Mbytes 8 Mbytes