F-Tile CPRI PHY Intel® FPGA IP User Guide

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ID 683284
Date 8/15/2024
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Document Table of Contents
Document Table of Contents x
1. About the F-Tile CPRI PHY Intel® FPGA IP 2. Getting Started 3. IP Parameter Settings 4. Functional Description 5. IP Registers 6. F-Tile CPRI PHY Intel FPGA IP User Guide Archives 7. Document Revision History for the F-Tile CPRI PHY Intel FPGA IP User Guide
1. About the F-Tile CPRI PHY Intel® FPGA IP x
1.1. Supported Features 1.2. Block Diagram 1.3. Device Family Support 1.4. Device Speed Grade Support 1.5. Resource Utilization 1.6. F-Tile CPRI PHY IP Release Information
2. Getting Started x
2.1. Installing and Licensing Intel® FPGA IP Cores 2.2. Specifying the IP Core Parameters and Options 2.3. Generated File Structure 2.4. IP Core Testbenches
2.1. Installing and Licensing Intel® FPGA IP Cores x
2.1.1. Intel® FPGA IP Evaluation Mode
2.2. Specifying the IP Core Parameters and Options x
2.2.1. Reference and System PLL Clock for your IP Design
3. IP Parameter Settings x
3.1. Analog Parameters for F-Tile IPs
4. Functional Description x
4.1. Reset Logic 4.2. Latency Measurement
4.2. Latency Measurement x
4.2.1. Deterministic Latency 4.2.2. Calculation for 64b/66b Datapath
1. About the F-Tile CPRI PHY Intel® FPGA IP
2. Getting Started
3. IP Parameter Settings
4. Functional Description
5. IP Registers
6. F-Tile CPRI PHY Intel FPGA IP User Guide Archives
7. Document Revision History for the F-Tile CPRI PHY Intel FPGA IP User Guide

3.1. Analog Parameters for F-Tile IPs

Analog parameter settings allow you to tune the transceiver analog functions in the FGT and FHT PMAs while designing high-speed serial protocol solutions. Use this feature to compensate for signal losses for high data rate communication.
Note: The design level HSSI_PARAMETER settings in the .qsf file take precedence over the Analog Parameters GUI settings.
Figure 10. Analog Parameter Options for FGT PMA in Parameter Editor
Table 10.  FGT TX Equalization (EQ) Analog Parameter Options
Parameter Values Description
FGT TXEQ Post Tap 1, 1.0 step size 0 to 19 Options for FGT TX EQ Post Tap 1, in 1.0 step size increments. Default value is 0.
FGT TXEQ Pre Tap 1, 1.0 step size 0 to 15 Options for FGT TX EQ Pre Tap 1, in 1.0 step size increments. Default value is 5.
FGT TXEQ Pre Tap 2, 1.0 step size 0 to 7

Options for FGT TX EQ Pre Tap 2, in 1.0 step size increments. Default value is 0.

FGT TXEQ Main Tap, 1.0 step size 0 to 55 Options for FGT TX EQ Main Tap, in 1.0 step size increments. Default value is 35.
Table 11.  FGT RX Analog Parameter Options
Parameter Values Description
Select FGT RX Onchip Termination RX_ONCHIP_TERMINATION_R_1(85 Ohms)

RX_ONCHIP_TERMINATION_R_2(100 ohms)

Selects FGT RX termination resistor setting. Default value is RX_ONCHIP_TERMINATION_R_1(85 Ohms).
Enable FGT RX AC Couple DISABLE

ENABLE

Enable RX external AC coupling setting. Default value is ENABLE.
Enable FGT VSR mode VSR_MODE_LOW_LOSS

VSR_MODE_HIGH_LOSS

VSR_MODE_DISABLE

Enable VSR mode setting. Default value is VSR_MODE_DISABLE.
RXEQ VGA Gain 0 to 63 Options for RX EQ VGA gain value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.
RXEQ High Frequency Boost 0 to 63 Options for RX EQ high frequency boost value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.
RXEQ DFE Data Tap1 0 to 63 Options for RX EQ DFE data tap1 value, in 1.0 step size increments. Default value is 0.
Note: This parameter is only available when the Adaptation mode is set to manual in RX Datapath Options.
Figure 11. Analog Parameter Options for FHT PMA in Parameter Editor
Table 12.  FHT TX Analog Parameter Options
Parameter Values Description
Enable FHT TX P&N Invert Disabled

Enabled

Enable FHT TX P and N inversion. Default value is Disabled.
Enable FHT TXOUT Tristate Disabled

Enabled

Enable tristate on FHT TX serial outputs. Default value is Disabled.
Select FHT TX Termination TXTERM_OFFSET_P0(90 Ohms)

TXTERM_OFFSET_M1(96.8 Ohms)

Selects FHT TX termination resistor setting. Default value is TXTERM_OFFSET_P0(90 Ohms).
Table 13.  FHT TX Equalization (EQ) Analog Parameter Options
Parameter Values Description

Post-Cursor 4, 0.25 step size

-8.0 to +7.75 FHT post tap 4 coefficients, 0.25 step size. Default value is 0.0.
Post-Cursor 3, 0.25 step size -8.0 to +7.75 FHT post tap 3 coefficients, 0.25 step size. Default value is 0.0.
Post-Cursor 2, 0.25 step size -8.0 to +7.75 FHT post tap 2 coefficients, 0.25 step size. Default value is 0.0.
Post-Cursor 1, 0.5 step size -16.0 to +15.5 FHT post tap 1 coefficient, 0.5 step size. Default value is 0.0.
Main-Cursor,0.5 step size 0.0 to 41.5 FHT main tap coefficient, 0.5 step size. Default value is 41.5.
Pre-Cursor 1,0.5 step size -16.0 to +15.5 FHT pre tap 1 coefficient, 0.5 step size. Default value is 0.0.
Pre-Cursor 2,0.25 step size -8.0 to +7.75 FHT pre tap 2 coefficients, 0.25 step size. Default value is 0.0.
Pre-Cursor 3,0.25 step size -8.0 to +7.75 FHT pre tap 3 coefficients, 0.25 step size. Default value is 0.0.
Table 14.  FHT RX Analog Parameter Options
Parameter Values Description
Enable FHT RX P&N Invert Disabled

Enabled

Enable FHT RX P and N inversion. Default value is Disabled.
Select FHT RX Termination RXTERM_OFFSET_P0(90 Ohms)

RXTERM_OFFSET_P2(94.6 Ohms)

RXTERM_OFFSET_P3(97.7 Ohms)

RXTERM_OFFSET_P4(100 Ohms)

RXTERM_OFFSET_P5(102.3 Ohms)

RXTERM_OFFSET_P6(105.4 Ohms)

RXTERM_OFFSET_P7(107.7 Ohms)

RXTERM_OFFSET_P8(110 Ohms)

RXTERM_OFFSET_M4(80.8 Ohms)

RXTERM_OFFSET_M5(83.1 Ohms)

RXTERM_OFFSET_M6(85.4 Ohms)

RXTERM_OFFSET_M7(87.7 Ohms)

Selects FHT RX termination resistor setting. Default value is RXTERM_OFFSET_P0(90 Ohms).
Select FHT external AC Cap EXTERNAL_AC_CAP_ENABLE

EXTERNAL_AC_CAP_DISABLE

Enable external AC coupling capacitance. Default value is EXTERNAL_AC_CAP_ENABLE.
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