ETHER-1GIG-XP-N3 Lattice, ETHER-1GIG-XP-N3 Datasheet - Page 15

• 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
Transmit and Receive Control (R/W)
Mnemonic: TX_RX_CTL
POR Value = 0000H
This register can be overwritten only when the Rx MAC and the Tx MAC are disabled. This register controls the var-
ious features of the MAC.
Maximum Packet Size (R/W)
Mnemonic: MAX_PKT_SIZE
POR Value = 05EEH (1518 decimal)
This register can be overwritten only when the MAC is disabled. All frames longer than the value (number of bytes)
in this register will be tagged as long frames.
IPG (Inter Packet Gap) (R/W)
Mnemonic: IPG_VAL
POR Value = 0048H
Rsvd
Receive_short
Receive_brdcst
Dis_rtry
Hden
Receive_mltcst
Receive_pause
Tx_dis_fcs
Discard_fcs
Prms
Max_frame
Rsvd
IPG
Name
Name
Name
Range
Range
Range
15:9
15:0
15:5
4:0
8
7
6
5
4
3
2
1
0
Reserved.
Receive Short Frames. When high, enables the Rx MAC to receive frames shorter than
64 bytes.
Receive Broadcast. When high, enables the Rx MAC to receive broadcast frames
Disable Retry (10/100 mode only). When high, disables retry on collision.
Half-duplex Enable (10/100 mode only). When high, configures the Tx MAC to operate in
half-duplex mode.
Receive Multicast. When high, the multicast frames will be received per the filtering rules
for such frames. When low, no Multicast (except PAUSE) frames will be received.
Receive PAUSE. When set, the Rx MAC will indicate the PAUSE frame reception to the Tx
MAC. In either case, PAUSE frames are received and transferred to the FIFO.
Transmit Disable FCS. When set, the FCS field generation is disabled in the Tx MAC.
Rx Discard FCS and Pad. When set, the FCS and any of the padding bytes are stripped
off the frame before it is transferred to the FIFO. When low, the entire frame is transferred
as is.
Promiscuous Mode. When asserted, all filtering schemes are abandoned and the Rx
MAC receives frames with any address.
Maximum size of the packet than can be handled by the core.
Reserved.
Inter-packet gap value in units of bit time.
15
Media Access Controller User’s Guide
Description
Description
Description
10/100 and 1Gig Ethernet