Altera CPRI IP Core - Manual (Page 142)

7–26 Chapter 7: Software Interface
Ethernet Registers
CPRI MegaCore Function December 2013 Altera Corporation
User Guide
tx_discard [1] WO
Indicates that the Ethernet transmitter module should discard the
current Ethernet Tx frame.
1'h0
tx_eop [0] WO
Indicates that the next data word to be written to the ETH_TX_DATA
or ETH_TX_DATA_WAIT register contains the end-of-packet byte for
this Tx packet.
1’h0
Table 7–58. ETH_TX_CONTROL—Ethernet Tx Control—Offset: 0x21C (Part 2 of 2)
Field Bits Access Function Default
Table 7–59. ETH_TX_DATA—Ethernet Tx Data—Offset: 0x220
Field Bits Access Function Default
tx_data [31:0] RW
Ethernet Tx frame data. If the tx_ready bit of the ETH_TX_READY
register is zero when tx_data is loaded, the Ethernet transmitter
module aborts the packet.
32'h0
Table 7–60. ETH_TX_DATA_WAIT—Ethernet Tx Data with Wait-State Insertion—Offset: 0x224
Field Bits Access Function Default
tx_data [31:0] RW
Ethernet Tx frame data. If the Ethernet transmitter module writes
Ethernet data to this register, it waits until data is ready, unless the
CPU times out the operation.
1'h0
Table 7–61. ETH_ADDR_MSB—Ethernet MAC Address MSB—Offset: 0x22C
Field Bits Access Function Default
RSRV [31:16] UR0 Reserved. 16'h0
mac[47:32] [15:0] RW
Most significant bits (16 bits) of local Ethernet MAC
address.
16'h0
Table 7–62. ETH_ADDR_LSB—Ethernet MAC Address LSB—Offset: 0x230
Field Bits Access Function Default
mac[31:0] [31:0] RW
Least significant bits (32 bits) of local Ethernet MAC
address.
32'h0
Table 7–63. ETH_HASH_TABLE—Ethernet Multicast Filtering Hash Table—Offset: 0x234
Field Bits Access Function Default
hash [31:0] RW
32-bit hash table for multicast filtering. If the group
address bit of the destination MAC address is set, and
multicast address filtering is enabled, this register
filters the packets to be accepted and discarded, as
follows:
If every bit set in this register is also set in the lower 32
bits of the destination MAC address, the packet is
accepted. Otherwise, the packet is discarded.
32'h0