Article View: comp.arch
Article #21057Re: Do you have bandwidth?
From: Randell Jesup
Date: Thu, 04 May 1989 19:52
Date: Thu, 04 May 1989 19:52
13 lines
1266 bytes
1266 bytes
In article <18753@obiwan.mips.COM> mark@mips.COM (Mark G. Johnson) writes:
>Seems to me that PGA's do just fine with respect to both temperature
>and frequency. The defacto industry-standard CMOS video DAC (Brooktree 458)
>comes in an 84 pin PGA, dissipates 2.2 Watts, and runs at 125 MHz.
>Maybe Brooktree is more clever with "rating" their package than RPM40 was.
Maybe. We needed 140 or so pins, most of them running at 40Mhz,
CMOS device, 2-3 watts. Also, this was in '85 or '86, and we wanted to use
an out-of-the-box package (this wasn't a production part, so we didn't want
to pay to develop/certify a package).
--
Randell Jesup, Commodore Engineering {uunet|rutgers|allegra}!cbmvax!jesup
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!decwrl!nsc!pyramid!cbmvax!jesup From: jesup@cbmvax.UUCP (Randell Jesup) Newsgroups: comp.arch Subject: Re: Do you have bandwidth? Keywords: memory bandwidth latency Message-ID: <6775@cbmvax.UUCP> Date: 4 May 89 19:52:20 GMT References: <407@bnr-fos.UUCP> <7766@thorin.cs.unc.edu> <23649@agate.BERKELEY.EDU> <833@wucs1.wustl.edu> <6759@cbmvax.UUCP> <18753@obiwan.mips.COM> Reply-To: jesup@cbmvax.UUCP (Randell Jesup) Organization: Commodore Technology, West Chester, PA Lines: 13