IP-CPRI Altera, IP-CPRI Datasheet - Page 41
IP-CPRI
Manufacturer Part Number
IP-CPRI
Description
IP CORE - Common Public Radio Interface (CPRI)
Manufacturer
Altera
Specifications of IP-CPRI
Software Application
IP CORE, Interface And Protocols, HIGH SPEED
Supported Families
Arria II GX, Cyclone IV GX, HardCopy IV, Stratix IV
Core Architecture
FPGA
Core Sub-architecture
Arria, Cyclone, Stratix
Rohs Compliant
NA
Lead Free Status / RoHS Status
na
Lead Free Status / RoHS Status
na
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Chapter 4: Functional Description
Physical Layer
Figure 4–9. Physical Layer High Level Block Diagram
December 2010 Altera Corporation
Low-Level
Transmitter
Payload
Module
AUX IF
Features
Physical Layer Architecture
Loop
Data
CPRI_TX_MAP
The Physical layer has the following features:
■
■
■
■
■
Figure 4–9
Transmitter Transceiver
Payload
Tx State Machine
I/Q
Frame synchronization
Transmitter and receiver with the following features:
■
■
■
■
■
■
So
Error reporting
Clock decoupling
tx_dataout
CPRI Link
ftware interface (status/control registers)
MUX
High-speed data serialization and deserialization
Clock and data recovery (receiver)
8B/10B encoding and decoding
Frame/control word assembly and delineation
Error detection
Deterministic latency
ETH_TX
Ethernet
Encode
shows the architecture of the Physical layer.
HDLC_TX
Bit-Destuff
HDLC
VSS/L1
CPU IF
Module
Low-Level
Receiver
Module
AUX IF
Payload
Timing
CPRI_RX_MAP
Payload
I/Q
RFN + HFN
Recovery
Timing
Receiver Transceiver
Rx State Machine
Frame Alignment
Elastic Buffer
CPRI Link
rx_datain
DEMUX
and
Rx
CPRI MegaCore Function User Guide
Ethernet
ETH_RX
Decode
HDLC_RX
Bit-Destuff
HDLC
VSS/L1/
Alarms
CPU IF
Module
4–17
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