Product category:
Communications ICs (Wired)
News Release from: Freescale Semiconductor | Subject: MPC8340BPON
Edited by the Electronicstalk Editorial
Team on 23 June 2004
SoC controls broadband passive optical
networking
A new device from Freescale Semiconductor is billed as the industry's first SoC solution for broadband passive optical networking (B-PON).
A new device from Freescale Semiconductor is billed as the industry's first SoC solution for broadband passive optical networking (B-PON) The MPC8340BPON integrates Freescale's PowerPC e300 core, a B-PON media access controller (MAC), Ethernet MACs and a clock and data recovery (CDR) unit on the same chip
This article was originally published on Electronicstalk on 20 Mar 2001 at 8.00am (UK)
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The MPC8340BPON provides an integrated solution for Internet protocol (IP) services designed to minimise system-level cost through silicon integration and reduction of the number of discrete memories required by optical network termination systems.
Freescale's standards-based approach also supports end-to-end interoperability for applications such as mass deployment of fibre to the premises (FTTx) networks in Japan and other countries deploying IP-based services.
According to the research and consulting firm RHK, FTTx networks passed approximately 894,000 homes worldwide by the end of 2003.
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PON systems comprised about 40% of those network deployments, and 26% were B-PON deployments.
FTTx deployment remains especially strong in Japan where the cumulative number of FTTx subscribers recently topped one million, with 80,000 new subscribers a month signing up for the service, according to Japan's Ministry of Public Management, Home Affairs, Posts and Telecommunications.
"We currently use Freescale's MC92701 B-PON device with a PowerQUICC II processor".
"Combining B-PON functionality from the MC92701 with Ethernet MACs and a processor platform is ideal for today's cost-sensitive market", said Motoyuki Nakamure, General Manager of the Communication Networks Centre at Mitsubishi Electric Corp.
"Using a single-chip B-PON SoC reduces silicon cost, and therefore the bill of materials, for optical network termination at the subscriber's premises".
"Ultimately, Freescale's integrated approach to B-PON silicon will help original equipment manufacturers and service providers broadly deploy fibre to the home in the Japan market at an attractive cost structure".
The MPC8340BPON SoC device is based on Freescale's e300 platform, a PowerPC processor platform, which provides the foundation for the company's recently announced MPC8349E PowerQUICC II Pro communications processor family.
The MPC8340BPON device's e300 core operates at 266MHz and includes a 32Kbyte instruction cache and a 32Kbyte data cache.
The processor platform integrates a 32bit double datarate (DDR) SDRAM memory controller (scaling to 266MHz), three 10/100 Ethernet controllers, dual universal asynchronous receiver/transmitter (DUART), I2Cbus support, SCSI parallel interface (SPI), an interrupt controller, general-purpose input output (GPIO), and ATM adaptation layer 5 (AAL5) support.
The B-PON layer termination core is based on Freescale's discrete MC92701 interface device.
The B-PON interface fully complies with the ITU-T G.983 specification, which is critical for PON system interoperability used in FTTx network deployments.
The ITU-T G.983 compliant B-PON core supports dynamic bandwidth assignment (DBA), a capability designed to enhance quality of service in fibre-based broadband services and to enable additional services that require bandwidth peaks beyond traditional fixed-bandwidth allocations.
Freescale's B-PON SoC features integrated clock and data recovery (CDR).
Integration of CDR logic provides system developers with the flexibility to use economical 2R triplexer optical modules, which helps to reduce bill of material and optical module costs.
The B-PON core also leverages Freescale's broad expertise in asynchronous transfer mode (ATM) cell processing and mixed-signal technology.
Key features of the MPC8340BPON SoC device include: 155/622Mbit/s downstream and 155Mbit/s upstream performance; B-PON layer termination; DBA for enhanced QoS control and peak bandwidth allocation; integrated phase-locked loop (PLL) and CDR; and ATM cell processing.
The MPC8340BPON device is manufactured on Freescale's 130nm process technology and has 1.2V core voltage and 2.5/3.3V I/O.
Projected availability for initial samples of the MPC8340BPON device is Q4 2004.
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