Altera CPRI IP Core - Manual (Page 10)

1–4 Chapter 1: About This MegaCore Function
CPRI IP Core Features
CPRI MegaCore Function December 2013 Altera Corporation
User Guide
■ Supports the following additional CPRI link features:
■ Programmable CPRI communication line rate (to 614.4, 1228.8, 2457.6, 3072.0,
4915.2, 6144.0, or 9830.4 Mbps) using Altera on-chip high-speed transceivers.
■ Programmable operation mode: CPRI link master or CPRI link slave.
■ Auto-rate negotiation support.
■ Scrambling and descrambling at 4915.2 Mbps, 6144.0 Mbps, and 9830.4 Mbps.
■ Receiver (Rx) delay measurement.
■ Transmitter (Tx) delay calibration.
■ Programmable hardware processing of the reset request bit in the CPRI frame.
■ Vendor-specific subchannel (VSS) communication on the CPRI link.
■ Diagnostic parallel reverse loopback paths.
■ Diagnostic stand-alone RE slave testing mode.
■ Includes the following additional interfaces:
■ Interface to external or on-chip processor, using the Altera Avalon ®
Memory-Mapped (Avalon-MM) interconnect specification.
■ Ethernet communication interfaces that support simultaneous Ethernet and
HDLC communication to and from the CPRI link.
■ Optional configuration of Ethernet MAC.
■ Optional Media-Independent Interface for Ethernet frame access.
■ Optional configuration of HDLC block.
■ Auxiliary interface provides full access to CPRI frame.
■ Supports data transfer to and from custom mapping functions, including
user-defined GSM mapping.
■ Supports data transfer from slave to master ports to implement daisy-chain
topologies.
■ Supports custom IQ sample widths.
■ Optional built-in IQ data interface with the following features:
■ Implements mapping methods in Sections 4.2.7.2.5 and 4.2.7.2.7 of the CPRI
V4.2 Specification, and mapping Options 1 and 2 in Sections 4.2.7.2.3 and
4.2.7.2.4 of the CPRI V4.2 Specification.
■ Implements WiMAX mapping methods described in Sections 4.2.7.2.2,
4.2.7.2.5, and 4.2.7.2.7 of the CPRI V4.2 Specification.
■ Implements UMTS/LTE mapping methods described in Section 4.2.7.2 of
the CPRI V4.2 Specification.
■ Implements WiMAX timing control methodology described in Section
4.2.8.2 of the CPRI V4.2 Specification.
■ Supports as many as 24 antenna-carrier interfaces.
■ Supports clocking antenna-carrier interfaces with external data channel
clocks or internal IP core clock.