
Word Addr Bits R/W Register Name Description
0x044
[31:0]
RW reset_fine_control You can use the reset_fine_
control register to create your own
reset sequence. In manual mode,
only the TX reset occurs automati‐
cally at power on and when the phy_
mgmt_clk_reset is asserted. When
pma_rx_setlocktodata or pma_rx_
setlocktodata is set, the transceiver
PHY is placed in manual mode.
[31:4,0] RW Reserved It is safe to write 0s to reserved bits.
[3] RW reset_rx_digital Writing a 1 causes the internal RX
digital reset signal to be asserted,
resetting the RX digital channels
enabled in reset_ch_bitmask . You
must write a 0 to clear the reset
condition.
[2] RW reset_rx_analog Writing a 1 causes the internal RX
analog reset signal to be asserted,
resetting the RX analog logic of all
channels enabled in reset_ch_
bitmask . You must write a 0 to clear
the reset condition.
[1] RW reset_tx_digital Writing a 1 causes the internal TX
digital reset signal to be asserted,
resetting all channels enabled in
reset_ch_bitmask . You must write
a 0 to clear the reset condition.
PMA Control and Status Registers
0x061 [31:0] RW phy _ serial _ loopback Writing a 1 to channel < n > puts
channel < n > in serial loopback
mode. For information about pre- or
post-CDR serial loopback modes,
refer to Loopback Modes.
0x064 [31:0] RW pma_rx_set_locktodata When set, programs the RX CDR
PLL to lock to the incoming data. Bit
< n> corresponds to channel < n>.
0x065 [31:0] RW pma_rx_set_locktoref When set, programs the RX CDR
PLL to lock to the reference clock. Bit
< n> corresponds to channel < n>.
0x066 [31:0] 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. Bit <n>
corresponds to channel <n>.
UG-01080
2015.01.19
Register Interface and Descriptions for Deterministic Latency PHY
11-25
Deterministic Latency PHY IP Core
Altera Corporation
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