Take a look at this announcement from Sept. 20th 2004, Notice the Quotes From Freescale about the use of the MPX and 7447A, sounds like a chip for future versions of the Pegasos:



Marvell® Introduces Industry-leading Discovery™ LT System Controllers For High Volume Applications


Discovery LT System Controllers Deliver High Performance and Integration for Cost-Optimized System Designs


Sunnyvale, California, (September 20, 2004) — Marvell® (NASDAQ: MRVL), a technology leader in the development of extreme broadband communications and storage solutions, today announced the Discovery™ LT, a high-performance, cost-effective system controller solution for high volume laser-printers, storage networking and other mass market applications. Building upon Marvell’s industry-leading Discovery platform, the new Discovery LT devices provide a solution for the value-conscious applications, which demand performance but at a lower cost. These innovative, feature-rich devices have received broad support from industry’s leading CPU vendors such as Freescale and PMC-Sierra.

The Discovery LT System Controllers, based on an innovative 100Gbps non-blocking cross architecture, integrates a 166 MHz CPU interface for MIPS and PowerPC CPUs, advanced communications peripherals and industry-standard I/O interfaces to enable cost-optimized system designs without compromising on performance. For users of custom ASICs and legacy system controllers, the Discovery LT offers a low-cost upgrade path to next generation features like DDR memory, Gigabit Ethernet and PCI-X interfaces without spending millions of dollars in ASIC re-design. Additionally, the Discovery LT integrates RAID engines to accelerate next generation storage applications.

“The introduction of the Discovery LT is another step in our continued commitment to bring industry leading features to the market and meet the performance needs of high volume applications,” said Balaji Baktha, Marvell’s Vice President and General Manager for the Embedded and Emerging Products Business Unit. “Discovery LT enables our customers to address a wider range of performance and cost-sensitive applications by leveraging their existing investment in Discovery architecture.”

“Enabling cost-sensitive applications to take advantage of high-performance processors from Freescale, the new Discovery LT controller offers an innovative architecture, high levels of integration, and support of our advanced MPX bus protocols,” said Bill Dunnigan, Vice President at Freescale Semiconductor and General Manager of Freescale’s Computing Platform Division. “The combination of Freescale’s high-performance MPC7447A processor and Discovery LT offers a solution with compelling price, low power and performance advantages.“

"Marvell's new Discovery LT system controller, combined with IBM's PowerPC 750FX/GX microprocessor, can offer embedded system designers the innovative architecture that enables their customers to build high-value, high-performance systems for their next-generation applications," said Ray Bryant, Director of Marketing for PowerPC and Emerging Products, IBM Systems and Technology Group. "Availability of products like the Discovery LT system controller is helping grow the industry ecosystem for Power Architecture and is an integral part of IBM’s Power Everywhere initiative."

What's the difference between this one and the MV64361 currently used in the Pegasos? RAID (that is nice)? Lower Price (even nicer)?

Well, this one and the VIA VT8237 Southbridge would be nice for a Pegasos2 rev2 (or "Pegasos 2.5") IMHO. Heck, I would settle with that VIA Southbridge alone as such upgrade (since that also has RAID (and Serial ATA, among other nice things)).

I don't see any changes from Discovery III except the lower clock speed.
Does it support a RapidIO bus now?

Better Pegasos III using the northbridge for ppc970, that I hope will be compatible with G4...

@timofonic - What Pegasos III?

@tarbos - Discovery LT is yet another northbridge, when you are an electronics engineer and are designing a product around it, you will know about it and what usefulness it is to you. Why do you need to know?

Neko

>What Pegasos III?

The one that was "announced" by bplan for around autumn 2004?

See http://www.pegasosppc.com/files/bplan.avi

>What Pegasos III?

http://www.amiga-news.de/en/news/AN-2003-07-00153-EN.html
"The Pegasos II G3 will sufficiently provide the gist for all the "basic" market capability we need. Can the G4 do the rest? Last week we decided it could not. The incremental difference in performance and efficiency did not warrant the investment we had intended to make. Frankly, the G4 works and we will make some, but the investment required does not correspond to the performance gained. This is why we let the information slip into the thread about the Pegasos III and the 970. With the 970 we can see the potential."

>Discovery LT is yet another northbridge, when you are an electronics engineer
>and are designing a product around it, you will know about it and what usefulness it is to you.

Yes, I will eventually know.

>Why do you need to know?

Why do you ask?
You have some hidden knowledge you might share with me depending on my answer?

Its interesting that know one even mentions the question i raised
When I think about the Pegasos future roadmap I am not only thinking
about the desktop applications... Hopefully some Pegasos' would
be helped by having additional options from a company that you Partner
with in making a design... If variety or choice was such a bad thing
we would still be using dos to buut our 400 mhz pentium 6's