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

Physical Layer Parameters
May 2011 Altera Corporation
Operation Mode Parameter
Line Rate Parameter
You customize the CPRI IP core 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 CPRI IP
core. You can modify parameter values to specify the following CPRI IP core
properties:
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This section lists the parameters that affect the configuration of the physical layer of
the CPRI IP core.
The Operation mode parameter specifies whether the CPRI IP core is configured with
slave clocking mode or with master clocking mode. An REC is configured with master
clocking mode.
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 fails because the design cannot meet timing in hardware.
Clocking mode—whether this CPRI IP core instance is configured with slave
clocking mode (RE slave) or with master clocking mode (REC or RE master).
Line rate.
Autorate negotiation—whether this CPRI IP core instance supports the connection
of external logic to implement autorate negotiation.
Starting channel number.
Depth of the low-level receiver elastic buffer.
Ethernet MAC—whether to include an internal Ethernet MAC block or provide an
MII-like interface to connect to an external Ethernet module. These two options are
mutually exclusive.
Number of antenna-carrier interfaces.
3. Parameter Settings
CPRI MegaCore Function User Guide