Jaap Hogenberg (Jaap.Hogenberg@nl.abnamro.com)
28 Apr 1999 13:32:40 +0200
Oops , completely overlooked that.... sorry.
I'll try my 233 MHz 21066A at 266 and 300 this weekend,
I'll let you guys know what happens.
Jaap
>> Where did you find that ?
>
>as mentioned in the original positing look at
>http://ftp.digital.com/pub/Digital/axppci/ref_cpu.txt
>
>there you'll find the following paragraph:
>
>Clock
>------
>The clock supplied to the CPU is 33.33 MHz; the CPU has an
>on-chip VCO/PLL that multiplies this external clock up to
>the required speed internally. The clock multiplier is set
>during power-on, while RESET is still low. A three-bit
>multiplier code is input to the CPU on pins IRQ[2:0].
>Provisions are made for many CPU clock frequencies, from 66
>to 300 MHz, selected by a set of jumpers (J7).
>
>Table 2-2 CPU Clock Frequency Jumper Settings
>
>Jumper Jumper Jumper IRQ[2: CPU Notes
>1-2 3-4 5-6 0] Clock
>----------------------------------------------------
>Out Out Out 000 66 21068
> Only
>Out Out In 001 100 21068A
> Only
>Out In Out 010 133 RESERVED
>Out In In 011 166 21066
> Only
>In Out Out 100 200 21066A
> Only
>In Out In 101 233 21066A
> Only
>In In Out 110 266 RESERVED
>In In In 111 300 RESERVED
>-----------------------------------------------------
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