Altera CPRI IP Core - Manual (Page 139)

Chapter 7: Software Interface 7–23
Ethernet Registers
December 2013 Altera Corporation CPRI MegaCore Function
User Guide
1 If you turn off the Include MAC block parameter, your application cannot access the
Ethernet registers. In that case, attempts to access these registers read zeroes and do
not write successfully, as for a Reserved register address.
For more information about these registers, refer to “Accessing the Ethernet Channel”
on page 4–47 .
Table 7–50. CPRI Ethernet Registers Memory Map
Address Name Expanded Name
0x200 ETH_RX_STATUS Ethernet Receiver Module Status
0x204 ETH_TX_STATUS Ethernet Transmitter Module Status
0x208 ETH_CONFIG_1 Ethernet Feature Configuration 1
0x20C ETH_CONFIG_2 Ethernet Feature Configuration 2
0x210 ETH_RX_CONTROL Ethernet Rx Control
0x214 ETH_RX_DATA Ethernet Rx Data
0x218 ETH_RX_DATA_WAIT Ethernet Rx Data With Wait-State Insertion
0x21C ETH_TX_CONTROL Ethernet Tx Control
0x220 ETH_TX_DATA Ethernet Tx Data
0x224 ETH_TX_DATA_WAIT Ethernet Tx Data With Wait-State Insertion
0x228 Reserved
0x22C ETH_MAC_ADDR_MSB Ethernet MAC Address MSB (16 bits)
0x230 ETH_MAC_ADDR_LSB Ethernet MAC Address LSB (32 bits)
0x234 ETH_HASH_TABLE Ethernet Multicast Filtering Hash Table
0x238–0x240 Reserved
0x244 ETH_FWD_CONFIG Ethernet Forwarding Configuration
0x248 ETH_CNT_RX_FRAME Ethernet Receiver Module Frame Counter
0x24C ETH_CNT_TX_FRAME Ethernet Transmitter Module Frame Counter
Table 7–51. ETH_RX_STATUS—Ethernet Receiver Module Status—Offset: 0x200 (Part 1 of 2)
Field Bits Access Function Default
RSRV [31:7] UR0 Reserved. 25'h0
rx_ready_block [6] RO
Indicates that an 8-word block of Ethernet data is available to be
transmitted on the Ethernet channel.
1’h0
rx_ready_end [5] RO
Indicates the end-of-packet (EOP) is available in the Ethernet Rx
buffer, ready to be transmitted on the Ethernet channel.
1’h0
rx_length [4:3] RO
Length of the final word in the packet. Values are:
00: 1 valid byte
01: 2 valid bytes
10: 3 valid bytes
11: 4 valid bytes
2’h0
rx_abort [2] RO Indicates the current Ethernet Rx packet is aborted. 1’h0