Table 32.
PMA Parameter Tuning for Optimal Performance
These are the tuned PMA parameter settings that result in optimal link performance across a temperature
sweep for each test configuration. An integer value means that the parameter is fixed, and "Firmware Default"
means that the parameter is adaptive.
Parameter
PAM4
NRZ
56 Gbps
28 Gbps
10 Gbps
LR
VSR
LR
VSR
25 dB/15 dB/10 dB
PMA Tuning Configuration Before Running Initial Adaptation
RF_A0
130
130
130
Firmware Default
(
Firmware Default
)
GS1
1
0
2
2
GS2
1
0
2
1
RF_B0
2
3
1
1
RF_B1
8
3
1
5
CTLE LF max
2
Firmware
Default
(
3
2
RF_P1_MAX
6
6
6
Firmware Default
)
RF_P2
Firmware
Default
(
Firmware
Default
(
0
0
RF_B0T
40
10
10
Firmware Default
)
PMA Tuning Configuration Before Running Continuous Adaptation
RF_B1
Firmware
Default
(
Firmware
Default
(
8
Firmware Default
(
Firmware Default
)
3.1.3.4. General PMA Tuning Guidelines
Observe these guidelines for custom data rate and channel situations.
(9)
Find the firmware default values in
on page 65.
3. Intel Stratix 10 E-Tile Transceiver PHY Architecture
UG-20056 | 2019.02.04
Intel
®
Stratix
®
10 E-Tile Transceiver PHY User Guide
73