Bitfields for Intel 82443BX Suspend CBR Refresh Rate:
Bit(s)	Description	)
 15-13	reserved (0)
 12	enable automatic Suspend CBR Refresh Rate adjustment (based on number
	  of OSCCLKs in a given time); if clear, the below field must be
	  programmed to guarantee minimum refresh rates in the worst case
 11-0	Suspend CBR Refresh Rate (number of OSCCLKs between refresh requests)
SeeAlso: #01142