IP-CPRI Altera, IP-CPRI Datasheet - Page 59

• 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

Chapter 4: Functional Description
Auxiliary Interfaces
Figure 4–16. Synchronization Pulses and Numbers on the AUX Interfaces
Figure 4–17. AUX Interface Outgoing Data at Different CPRI Line Rates (Part 1 of 3)
614.4 Mbps
Line Rate:
December 2010 Altera Corporation
[31:24]: #Z.X.0.0
[23:16]:
[15:8]:
cpri_{rx,tx}_seq
cpri_{rx,tx}_hfp
cpri_{rx,tx}_bfn
cpri_{rx,tx}_hfn
cpri_{rx,tx}_rfp
[7:0]:
cpri_{rx,tx}_x
#Z.X.1.0
#Z.X.2.0
#Z.X.3.0
Figure 4–16
The AUX receiver transmits data on the AUX interface in fixed 32-bit words. The
mapping to 32-bit words depends on the CPRI MegaCore function line rate.
Figure 4–17
to the AUX Avalon-ST 32-bit interface.
0
(1)
shows the relationship between the synchronization pulses and numbers.
shows how the data received from the CPRI interface module is mapped
#Z.X.4.0
#Z.X.5.0
#Z.X.6.0
#Z.X.7.0
1
Sequence number on AUX interface
n
0
0
0
#Z.X.10.0
#Z.X.11.0
#Z.X.8.0
#Z.X.9.0
1
1
Radio Frame (10 ms)
2
1
Basic Frame
Hyperframe
n + 1
2
2
...
#Z.X.12.0
#Z.X.13.0
#Z.X.14.0
#Z.X.15.0
...
...
3
NUM_SEQ - 1
149
255
n + 2
CPRI MegaCore Function User Guide
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