Sdram Voltages; Form Factor - IBM PPC750FX User Manual

Evaluation Board Manual
PPC750FX Evaluation Board Preliminary

2.13.4 SDRAM Voltages

An on-board regulator supplies +2.5V to the DDR SDRAM. This voltage is also the supply for the DRAM
interface in the system controller.There is also a +1.25V reference voltage provided to the SDRAM. There is
no current measurement point provided for this voltage.

2.14 Form Factor

The PPC750FX board is a full-length PCI card intended to be plugged into and operated in a standard PCI
slot on a personal computer or a PCI backplane. If a personal computer or PCI backplane are not available, it
can operate stand-alone with an external ATX power supply connected at J34.
Board Design 750FXebm_ch2.fm
Page 26 of 115 June 10, 2003