PMC PM7830

PM7830 BRIC
Baseband Radio Interface Controller
Advance
Product Brief
PRODUCT OVERVIEW
• Supports up to 6 serial channels running independently at CPRI line
The PM7830 Baseband to Radio Interface Controller (BRIC) is a fullfeatured 6-port termination device that fully supports the CPRI specification for wireless base station interconnection. The BRIC provides
integrated rate-adaptive SERDES links along with CPRI framing,
mapping, switching, and combining functions.
When used in conjunction with the 2-port PM7832 BRIC-2, the BRIC
and BRIC-2 can be used to flexibly create scalable CPRI-compliant
distributed architectures.
rates from 614.4 Mbit/s to 2457.6 Mbit/s with 8B/10B-encoded
data.
• Supports up to 6 parallel Radio Bus Interfaces (RBIs) for output of
user data.
• Supports CPRI start-up sequence and link-rate auto-negotiation for
both REC and RE operating modes.
• Supports traffic switching at the CPRI Antenna Carrier (AxC) level.
• Supports IQ summing.
• Supports multiplexing and termination of control and
synchronization sub-channels:
PRODUCT HIGHLIGHTS
• Operates in all of the following Baseband-to-RF interconnect
topologies:
•
Up to 6 Ethernet Fast C&M channels.
•
Up to 6 HDLC Slow C&M channels.
• Measures round-trip delay on each CPRI link with an accuracy of
•
Local interconnect using a central combiner/distributor topology.
•
Local interconnect using a full mesh topology.
•
Remote interconnect using a point-to-point (P2P) star topology.
•
Remote interconnect using a tree and branch topology.
• Supports serial line protection switching.
•
Remote interconnect using a chain topology.
• Supports configuration, control, monitoring and test capability on a
•
Remote interconnect using a ring topology.
BLOCK DIAGRAM
±1 ns:
•
per-channel basis.
MPIF
Clock
Synthesis
Unit
(CSU)
Provides programmable delay insertion to meet CPRI delay
calibration requirements.
SYNC HDLC
Microprocessor
Interface
(MPIF)
6 x RMII/SMII
Synchronization
& HDLC
Processor
(SCHP)
JTAG
JTAG
Ctrl. & Mgmt.
Processor
(CMP)
6 x Tx Serial
Link Data
6 x Rx Serial
Link Data
Rate Adaptive
SERDES
Radio Frame Mapper
(RMAP)
Radio Frame
Demapper (RDMP)
Link #0
Link #1
Link #2
Link #3
Link #4
Link #5
Delay Calculator
Crossbar With Summing (XCSUM)
PMC-2051672, Issue 1
© Copyright PMC-Sierra, Inc. 2005
All rights reserved. Proprietary and Confidential to PMC-Sierra, Inc. and for its customers’ internal use.
6 x Parallel
Radio Bus
Interface
(RBI)
PM7830 BRIC Baseband Radio Interface Controller
• Software -compatible BRIC and BRIC-2 allow complete CPRI solutions
INTERFACES
to be realized quickly and expanded as needed.
• Line side high-speed serial outputs supporting simultaneous
• Enables application-specific performance monitoring & OAM
multiple CPRI line rates using a single reference clock input.
functions using in-band Ethernet/HDLC control & management subchannels.
• System side parallel Radio Bus Interface (RBI) supporting parallel
output of either:
•
Direct CPRI frame payload.
• Applicable for UMTS, CDMA, WiMAX solutions and beyond.
•
Unmapped IQ data to/from CPRI frame payload.
• Industry's most complete and low-risk solution with reuse from
PM8358 QuadPHY 10GX SERDES and PM7831 BRIC-FP CPRI Framer.
• 6-port RMII/SMII Ethernet interface for accessing Fast C&M
channels.
APPLICATIONS
• Multi-channel HDLC serial interface for accessing Slow C&M
channels across all links.
Two of the many possible architectural implementations using the
BRIC and BRIC-2 are shown below:
• 16-bit microprocessor interface compatible with both Intel-like and
Freescale-like processors.
• Central combiner-based CPRI architecture where the BRIC is used as
a termination and switching device for the interconnect of BRIC-2based REC and RE CPRI endpoints.
BENEFITS
• Chain-based CPRI architecture where the BRIC is used to terminate
• Provides all necessary functions for implementing CPRI-based
one or more chains of remotely-located RE devices.
Chain, Ring, Point-to-Point architectures, and more.
• Hitless protection switching, IQ summing, AxC switching & multicast
functions enable single-device central switch/combiner
architectures.
CENTRAL COMBINER-BASED CPRI ARCHITECTURE
CPRI
Interconnect
CPRI
Interconnect
Switching/Combining (P)
Baseband
RE
Switching/Combining (W)
Baseband
RE
Baseband
RE
BRI
BRIC
C
Baseband
Processing
IQ Data
IQ Data
BRI
BRIC-2
C
BRI
BRIC-2
C
RF Chain
Processing
CHAIN-BASED CPRI ARCHITECTURE
REC
RE
Baseband
Processing
IQ Data
Operations Head Office:
PMC-Sierra, Inc.
100-2700 Production Way
Burnaby, BC V5A 4X1 Canada
Tel: 1.604.415.6000
Fax: 1.604.415.6200
RF Chain
Processing
IQ Data
IQ Data
BRI
BRIC-2
C
CPRI
Corporate Head Office:
PMC-Sierra, Inc.
Mission Towers One
3975 Freedom Circle
Santa Clara, CA, 95054, U.S.A.
Tel: 1.408.239.8000
Fax: 1.408. 492.1157
RF Chain
Processing
IQ Data
BRI
BRIC
C
RE
RE
RF Chain
Processing
BRI
BRIC-2
C
CPRI
BRI
BRIC-2
C
CPRI
PMC-2051672 (A1) © Copyright PMC-Sierra, Inc. 2005. All rights
reserved. For a complete list of PMC-Sierra’s trademarks , visit
www.pmc-sierra.com/legal/. Other product and company names
mentioned herein may be the trademarks of their respective owners.
For corporate information, send email to: [email protected].
All product documentation is available on our web site at:
www.pmc-sierra.com.
CPRI