Configuration register space, Mac configuration register space, Configuration register space -1 – Altera Triple Speed Ethernet MegaCore Function User Manual
Page 84: Mac configuration register space -1
6
Configuration Register Space
2014.06.30
UG-01008
MAC Configuration Register Space
Use the registers to configure the different aspects of the MAC function and retrieve its status and statistics
counters.
In multiport MACs, a contiguous register space is allocated for all ports and accessed via the Avalon-MM
control interface. For example, if the register space base address for the first port is 0x00, the base address
for the next port is 0x100 and so forth. The registers that are shared among the instances occupy the register
space of the first port. Updating these registers in the register space of other ports has no effect on the
configuration.
Table 6-1: Overview of MAC Register Space
Description
Section
Dword Offset
Base registers to configure the MAC function. At the minimum,
you must configure the following functions:
• Primary MAC address (
mac_0
/
mac_1
)
• Enable transmit and receive paths (
TX_ENA
and
RX_ENA
bits
in the
command_config
register)
The following registers are shared among all instances of a
multiport MAC:
•
rev
•
scratch
•
frm_length
•
pause_quant
•
mdio_addr0
and
mdio_addr1
•
tx_ipg_length
For more information about the base configuration registers,
refer to
Base Configuration Registers (Dword Offset 0x00 –
on page 6-3.
Base Configuration
0x00 – 0x17
Counters collecting traffic statistics. For more information about
the statistics counters, refer to
Statistics Counters (Dword Offset
on page 6-11.
Statistics Counters
0x18 – 0x38
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