GTS CPRI PHY Intel® FPGA IP User Guide

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ID 814577
Date 10/07/2024
Public
Document Table of Contents
Document Table of Contents x
1. About the GTS CPRI PHY FPGA IP 2. Getting Started 3. GTS CPRI PHY IP Parameter Settings 4. Functional Description 5. Interface Signals 6. GTS CPRI PHY IP Registers 7. GTS CPRI PHY IP Troubleshooting 8. GTS CPRI PHY Intel FPGA IP User Guide Archives 9. Document Revision History for the GTS CPRI PHY Intel FPGA IP User Guide
1. About the GTS CPRI PHY FPGA IP x
1.1. GTS CPRI PHY IP Features 1.2. GTS CPRI PHY IP Device Family Support 1.3. GTS CPRI PHY IP Device Speed Grade Support 1.4. GTS CPRI PHY IP Release Information
2. Getting Started x
2.1. Installing and Licensing Intel® FPGA IPs 2.2. Specifying the GTS CPRI PHY IP Parameters and Options 2.3. Generated File Structure 2.4. GTS CPRI PHY IP Testbenches
2.1. Installing and Licensing Intel® FPGA IPs x
2.1.1. Intel FPGA IP Evaluation Mode
2.2. Specifying the GTS CPRI PHY IP Parameters and Options x
2.2.1. System PLL Clock for Your IP Design
3. GTS CPRI PHY IP Parameter Settings x
3.1. Analog Parameters for GTS IPs
4. Functional Description x
4.1. Reset Logic 4.2. Latency Measurement
4.2. Latency Measurement x
4.2.1. Deterministic Latency
5. Interface Signals x
5.1. GTS CPRI PHY IP Clock Signals 5.2. GTS CPRI PHY IP Reset Signals 5.3. GTS CPRI PHY IP TX MII (64b/66b) 5.4. GTS CPRI PHY IP RX MII (64b/66b) 5.5. GTS CPRI PHY IP Status Interface for 64b/66b Line Rate 5.6. GTS CPRI PHY IP TX Interface (8b/10b) 5.7. GTS CPRI PHY IP RX Interface (8b/10b) 5.8. GTS CPRI PHY IP Status Interface for 8b/10b Line Rate 5.9. GTS CPRI PHY IP Serial Interface 5.10. GTS CPRI PHY Reconfiguration Interface 5.11. GTS CPRI PHY IP Datapath and PMA Avalon Memory-Mapped Interface
5.1. GTS CPRI PHY IP Clock Signals x
5.1.1. GTS CPRI PHY IP Required Clock Frequencies
1. About the GTS CPRI PHY FPGA IP
2. Getting Started
3. GTS CPRI PHY IP Parameter Settings
4. Functional Description
5. Interface Signals
6. GTS CPRI PHY IP Registers
7. GTS CPRI PHY IP Troubleshooting
8. GTS CPRI PHY Intel FPGA IP User Guide Archives
9. Document Revision History for the GTS CPRI PHY Intel FPGA IP User Guide

5.4. GTS CPRI PHY IP RX MII (64b/66b)

Table 20.  GTS CPRI PHY IP RX MII
Port Name Width (Bits) Domain Description
o_rx_mii_d[63:0] 64 o_rx_clkout2

RX MII data. Data is in MII encoding. o_rx_mii_d[7:0] holds the first byte that the IP core received on the CPRI link. o_rx_mii_d[0] holds the first bit that the IP core received on the CPRI link.

o_rx_mii_c[7:0] 8 o_rx_clkout2 RX MII control bits. Each bit corresponds to a byte of RX MII data. o_rx_mii_c[0] corresponds to o_rx_mii_d[7:0], o_rx_mii_c[1] corresponds to o_rx_mii_d[15:8], and so on.

If the value of a bit is 1, the corresponding data byte is a control byte. If the value of a bit is 0, the corresponding data byte is data.

The Start of Packet byte (0xFB) and End of Packet byte (0xFD) are control bytes.

Figure 9. Receiving Data Using the RX MIIThis figure shows how to read packets from the RX MII.
  • The packets are MII encoded. Each byte in o_rx_mii_d has a corresponding bit in o_rx_mii_c that indicates whether the byte is a control byte or a data byte; for example, o_rx_mii_c[2] is the control bit for o_rx_mii_d[23:16].
  • The byte order for the RX MII flows from right to left. The first byte that the IP receives is o_rx_mii_d[7:0].
  • The first bit that the IP receives is o_rx_mii_d[0].
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