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

Page 244

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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

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