ETHER-1GIG-XP-N3 Lattice, ETHER-1GIG-XP-N3 Datasheet - Page 16

• Manufacturer Part Number: ETHER-1GIG-XP-N3
• Description: Ethernet ICs Gigabit Ethernet MAC
• Manufacturer: Lattice

Specifications of ETHER-1GIG-XP-N3

• Product: Ethernet Controllers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Lattice Semiconductor
MAC Address Register {0,1,2} (R/W), Set of Three
Mnemonic: MAC_ADD
POR Value = 0000H.
The MAC Address Registers 0-2 contain the Ethernet address of the port. The MAC Address Register [0] has the
two bytes that are transmitted first and the MAC Address Register [2] has the two bytes that are transmitted last.
Bit[15] is transmitted first while bit[0] is transmitted last.
Transmit and Receive Status (RO)
Mnemonic: TX_RX_STS
POR Value = 0000H
This register reports events that have occurred during packet reception and transmission.
VLAN Tag (RO)
Mnemonic: VLAN_TAG
POR Value = 0000H.
The VLAN tag register has the VLAN TAG field of the most recent tagged frame that was received. This is a read
only register.
Mac_addr
Rsvd
Rx_idle
Tagged_frame
Brdcst_frame
Multcst_frame
IPG_shrink
Short_frame
Long_frame
Error frame
CRC
Pause_frame
Tx_idle
VLAN
Name
Name
Name
Range
Range
Range
15:11
15:0
15:0
10
9
8
7
6
5
4
3
2
1
0
Ethernet address assigned to the port supported by the Tri-speed MAC.
Reserved.
Receive MAC Idle. Receive MAC in idle condition used to reset configurations by CPU
interface.
Tagged Frame. Tagged frame received.
Broadcast Frame. Indicates that a Broadcast packet was received.
Multicast Frame. Indicates that a Multicast packet was received.
IPG Shrink. Received frame with shrunk IPG (IPG < 96 bit time).
Short Packet. Indicates that a packet shorter than 64 bytes has been received.
Too Long Packet. Indicates receipt of a packet longer than the maximum allowable packet
size specified in the MAX_PKT_SIZE register.
Rx_er Asserted. Indicates the frame was received with the rx_er signal asserted.
CRC Error. Indicates a packet was received with a CRC error.
PAUSE Frame. Indicates a PAUSE frame was received.
Transmit MAC Idle. Transmit MAC in idle condition, used to reset configurations by CPU
interface.
This field defines length/type of field of the VLAN tag when inserted into transmitted
frames.
16
Media Access Controller User’s Guide
Description
Description
Description
10/100 and 1Gig Ethernet