Altera cyclone V Technical Reference page 1601

Hard processor system

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MAC_Address16_High

MAC_Address16_High Fields

Altera Corporation

When this bit is enabled, the address filter block uses

the 17th MAC address for perfect filtering. When this

bit is disabled, the address filter block ignores the

address for filtering.

When this bit is enabled, the MAC Address16[47:0] is

used to compare with the SA fields of the received

frame. When this bit is disabled, the MAC

Address16[47:0] is used to compare with the DA

fields of the received frame.

This array of bits are mask control bits for comparison

of each of the MAC Address bytes. When masked, the

MAC does not compare the corresponding byte of

received DA or SA with the contents of MAC

Address16 high and low registers. Each bit controls

the masking of the bytes. You can filter a group of

addresses (known as group address filtering) by

masking one or more bytes of the address. The array

index corresponds to the byte (e.g. index 0 is for bits

Second MAC address filtering disabled

Second MAC address filtering enabled

MAC address compare disabled

MAC address compare enabled

Byte is unmasked (i.e. is compared)

Byte is masked (i.e. not compared)

Ethernet Media Access Controller

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