User guide
Related Information
• Embedded Debug Features on page 6-40
• Calibration on page 7-1
Direct Reconfiguration Flow
Use this flow to perform dynamic reconfiguration when you know exactly which parameter and value to
change for the transceiver channel or PLL. Refer to the Arria 10 Register Map for the feature address and
bit locations of the feature you want to change. Perform a read-modify-write to reconfigure the
transceiver channel or PLL. You can use this flow to change the PMA analog settings of the transceiver
channel.
Related Information
Arria 10 Transceiver Register Map
Changing PMA Analog Parameters
You can use the reconfiguration interface on the Transceiver Native PHY IP to change the value of PMA
analog features. Transceiver Native PHY IP configuration files do not contain analog settings. Set analog
parameters using Quartus II Settings File (.qsf) variables or these steps.
To change any of the PMA analog features:
1. Write 0x2 to address 0x0 of the channel.
2. Read from the PMA analog feature address of the channel you want to change. For example, to change
pre-emphasis 1
st
post-tap, read and store the value of address 0x105.
3. Select a valid value for the feature according to the Arria 10 register map. For example, a valid setting
for pre-emphasis 1
st
post-tap has a bit encoding of 5'b00001.
4. Perform a read-modify-write to the address of the PMA analog feature using the valid value. For
example, to change the pre-emphasis 1
st
post-tap, write 5'b00001 to address 0x105.
5. Write 0x3 to address 0x0 of the channel.
Table 6-5: Register Map for PMA Analog Feature
PMA Analog Feature Address Bit Values
Pre-emphasis 1
st
post-tap 0x105 [4:0]
5'b00000 - 5'b11001
Pre-emphasis 1
st
post-tap polarity 0x105 [6]
1'b0 = positive
1'b1 = negative
Pre-emphasis 2
nd
post-tap 0x106 [3:0]
4'b0000 - 4'b1100
Pre-emphasis 2
nd
post-tap polarity 0x106 [5]
1'b0 = positive
1'b1 = negative
Pre-emphasis 1
st
pre-tap 0x107 [4:0]
5'b00000 - 5'b10000
UG-01143
2015.05.11
Direct Reconfiguration Flow
6-13
Reconfiguration Interface and Dynamic Reconfiguration
Altera Corporation
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