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PPc processoren en IBM


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In mijn Mr zap doos zit een IBM PPC 45L8394, maakt of maakte IBM deze processoren zelf of werden die geleverd door Motorola en of Freescale, ik weet dat PPC een trademark van IBM is?


Ben nu een PDF van Freescale aan het doorspitten 1348 pages,

teveel om teprinten, om is een beeld tekrijgen van dit type processor, en waarom juist dit soort is gekozen.


Is er iemand die hierbij enig licht kan doen schijnen over het hoe en waarom die in bijv deze Zap doos zit.


Uit de pdf blijkt dat bijv.:


1.2.2 The System Interface Unit

The system interface unit supports traditional 68K big-endian memory systems, traditional x86 little-endian memory systems, and PowerPC little-endian memory systems. It also provides power management functions, reset control, a PowerPCdecremen- ter, PowerPC timebase, and real-time clock. Although the PowerPC core is a 32-bit device internally, it can be configu- red to operate with an 8-, 16-, or 32-bit data bus.

Regardless of the system bus size, dynamic bus sizing is supported, which allows 8-, 16-, and 32-bit peripherals and

memory to coexist on a 32-bit system bus.

The memory controller supports up to eight memory banks with glueless interfaces to DRAM, SRAM, EPROM, Flash EPROM, SDRAM, EDO and other peripherals with two-clock initial access to external SRAM and bursting support. It provides variable block sizes between 32K and 256M. The memory controller has 0 to 20 wait states for each bank The memory controller has 0 to 20 wait states for each bank of memory and can use address type matching to qualify each memory bank access. It provides four byte-enable signals for varying width devices, one output-enable signal, and one boot chip-select that is available at reset.


Dit gaat over het geheugen wat eraangeplakt kan worden, zou dit ook gelden voor 8 of 16 bit hardware, bijv.HD ctrl of een NIC interface?


Het type nr IBM PPC 45L8394 geeft geen soelaas bij het vinden van info, vandaar mijn vraag.




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