Pma control and status registers – Altera Transceiver PHY IP Core User Manual
Page 244

Word
Addr
Bits
R/W
Register Name
Description
[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
Table 9-24: PMA Control and Status Registers
Word
Addr
Bits
R/W
Register Name
Description
0x061
[31:0]
RW
phy _ serial _ loopback
Writing a 1 to channel
puts channel
in serial loopback mode.
0x063
[31:0]
R
pma_rx_signaldetect
When channel
=1, indicates that
receive circuit for channel
senses the
specified voltage exists at the RX input
buffer.
0x064
[31:0]
RW
pma_rx_set_locktodata
When set, programs the RX CDR PLL to
lock to the incoming data. Bit
corresponds to channel
.
0x065
[31:0]
RW
pma_rx_set_locktoref
When set, programs the RX CDR PLL to
lock to the reference clock. Bit
corresponds to channel
.
0x066
[31:0]
RO
pma_rx_is_lockedtodata
When 1, 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
corresponds to channel
.
0x067
[31:0]
RO
pma_rx_is_lockedtoref
When 1, indicates that the RX CDR PLL is
locked to the reference clock. Bit
corresponds to channel
.
UG-01080
2015.01.19
PMA Control and Status Registers
9-31
Custom PHY IP Core
Altera Corporation