riscy
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Mips Chips from NEC

To: riscy@pyramid.com (Mips 3000)
Subject: Mips Chips from NEC
From: Bill Broadley <broadley@neurocog.lrdc.pitt.edu>
Date: Mon, 26 Jul 1993 21:05:00 -0500 (EDT)
Reply-to: riscy@pyramid.com
Sender: owner-riscy@pyramid.com
I received the data sheets on the 4000/4400 PC/SC

Here's a quick summary:  
        Part #       package   Power Cache 
4000PC  PD30400RJ-50 179 pin    5v   8k+8k
        PD30400RP-50 179 pin+HS 5v   8k+8k
4000SC  PD30401RJ-50 447 pin    5v   8k+8k
        PD30401RP-50 447 pin+HS 5v   8k+8k

4400PC  PD30410RJ-(50,67,75)  179 pin    5v     16k+16k 
        PD30410RP-(50,67,75)  179 pin+HS 5v     16k+16k 
        PD30410LRJ-(50,67,75) 179 pin    3.3v   16k+16k 
        PD30410LRP-(50,67,75) 179 pin+HS 3.3v   16k+16k 

4400SC  PD30411RJ-(50,67,75)  447 pin    5v     16k+16k 
        PD30411RP-(50,67,75)  447 pin+HS 5v     16k+16k 
        PD30411LRJ-(50,67,75) 447 pin    3.3v   16k+16k 
        PD30411LRP-(50,67,75) 447 pin+HS 3.3v   16k+16k 

HS means with heat-sink, all chips are ceramic. The last two digits of the
part number is the external clock speed, internal is twice that.

Main difference between 4000 and 4400 is double the cache and faster clocks.

Main difference between PC and SC is the the the SC supports a 128 bit 
secondary cache interface support.  But based on there diagrams the
PC supports a secondary cache, just not 128 bits wide.

All chips share: 
        64 bit microprocessor, integer, fp, registers, and virtual addresses.
        Dual instruction issue with no restrictions.
        32 64 bit general purpose registers and 16 64 bit fp registers.
        one level deep uncached store buffer.

The 4400 is around 94 specint and 105 specfp (seperate source)

The 4000 is listed as 62 specint, and 63 specfp.

The 4200 is mentioned in passing:  plastic, 1.5 Watts, 80 Mhz internal clock,
55 SPECint92 and 30 SPECfp92.

-- 
Bill                                    1st>    Broadley@neurocog.lrdc.pitt.edu
Broadley@schneider3.lrdc.pitt.edu <2nd  3rd>                 Broadley+@pitt.edu
Linux is great.         Bike to live, live to bike.                      PGP-ok

 

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