
Chapter 5: 1G/10 Gbps Ethernet PHY IP Core 5–14
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
PCS Registers
Table 5–16 describes the PCS registers.
0x65 0 RW
pma_rx_set_locktoref
When set, programs the RX clock data recovery (CDR)
PLL to lock to the reference clock.
0x66 0 RO
pma_rx_is_lockedtodata
When asserted, indicates that the RX CDR PLL is locked to
the RX data, and that the RX CDR has changed from LTR
to LTD mode.
0x67 0 RO
pma_rx_is_lockedtoref
When asserted, indicates that the RX CDR PLL is locked to
the reference clock.
Table 5–15. PMA Registers (Part 2 of 2)
address
Bit Access
Name Description
Table 5–16. PCS Registers
address Bit Access Name Description
0x80 31:0 RW
Indirect_addr
Must be left at default value of 0 to specify logical channel
0. This design supports a signal channel.
0x81 2 RW
RCLR_ERRBLK_CNT
Error Block Counter clear register. When set to 1, clears
the
RCLR_ERRBLK_CNT
register. When set to 0, normal
operation continues.
0x81 3 RW
RCLR_BER_COUNT
BER Counter clear register. When set to 1, clears the
RCLR_BER_COUNT
register. When set to 0, normal
operation continues.
0x82 1 RO
HI_BER
High BER status. When set to 1, the PCS is reporting a
high BER. When set to 0, the PCS is not reporting a high
BER.
0x82 2 RO
BLOCK_LOCK
Block lock status. When set to 1, the PCS is locked to
received blocks. When set to 0, the PCS is not locked to
received blocks.
0x82 3 RO
TX_FIFO_FULL
TX FIFO full. When set to 1, the
TX_FIFO_FULL
is full.
0x82 4 RO
RX_FIFO_FULL
RX FIFO full. TX FIFO full. When set to 1, the
RX_FIFO_FULL
is full.
0x82 5 RO
RX_SYNC_HEAD_ERROR
When set to 1, indicates an RX synchronization error.
0x82 6 RO
RX_SCRAMBLER_ERROR
When set to 1, indicates an RX scrambler error.
0x82 7 RO
Rx_DATA_READY
When set to 1, indicates the PCS is ready to accept data.
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