IP-CPRI Altera, IP-CPRI Datasheet - Page 21

• 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

Line Rate Parameter
Operation Mode Parameter
Transceiver Starting Channel Number
December 2010 Altera Corporation
You customize the CPRI MegaCore function by specifying parameters in the CPRI
parameter editor, which you access from the MegaWizard Plug-in Manager in the
Quartus II software.
This chapter describes the parameters and how they affect the behavior of the
MegaCore function. To customize your CPRI MegaCore function, you can modify
parameters to specify the following MegaCore function properties:
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The Line rate parameter specifies the line rate on the CPRI link in gigabits per second
(Gbps). Cyclone IV GX devices support 0.6144, 1.2288, 2.4576, and 3.072 Gbps line
rates. Arria II GX, Arria II GZ, and Stratix IV GX devices support 0.6144, 1.2288,
2.4576, 3.072, 4.9152, and 6.144 Gbps line rates.
If you specify a CPRI line rate of 4.9152 or 6.144 Gbps for a variation that targets an
Arria II GX device, your Quartus II project must target an I3 speed grade device. The
parameter editor does not enforce this restriction. However, if you violate this
restriction, compilation will probably fail, and the design cannot meet timing in
hardware.
The Operation mode parameter specifies whether the CPRI MegaCore function is
configured with slave clocking mode or with master clocking mode. An REC is
configured with master clocking mode.
You can specify the starting number for the CPRI MegaCore function transceiver. For
a CPRI MegaCore function master, the Master transceiver starting channel number
specifies the starting channel number for the transceiver.
Line rate
Whether this CPRI MegaCore function instance is configured with slave clocking
mode (RE slave) or with master clocking mode (REC or RE master).
Starting channel number
Number of antenna-carrier interfaces
Whether to enable auto-rate negotiation
Whether to include an internal Ethernet MAC block or provide a Media
Independent Interface (MII)-like interface to connect to an external Ethernet
module
3. Parameter Settings
CPRI MegaCore Function User Guide