AMD AX1800DMT3C User Guide - Page 93

24309E-March 2002 Appendix A Preliminary Information AMD Athlon™ XP Processor Model 6 Data Sheet Table 24. Acronyms (continued) Abbreviation Meaning JTAG Joint Test Action Group LAN Large Area Network LRU Least-Recently Used LVTTL Low Voltage Transistor Transistor Logic MSB Most Significant Bit MTRR Memory Type and Range Registers MUX Multiplexer NMI Non-Maskable Interrupt OD Open-Drain OPGA Organic Pin Grid Array PBGA Plastic Ball Grid Array PA Physical Address PCI Peripheral Component Interconnect PDE Page Directory Entry PDT Page Directory Table PGA Pin Grid Array PLL Phase Locked Loop PMSM Power Management State Machine POS Power-On Suspend POST Power-On Self-Test RAM Random Access Memory ROM Read Only Memory RXA Read Acknowledge Queue SCSI Small Computer System Interface SDI System DRAM Interface SDRAM Synchronous Direct Random Access Memory SIMD Single Instruction Multiple Data SIP Serial Initialization Packet SMbus System Management Bus SPD Serial Presence Detect SRAM Synchronous Random Access Memory SROM Serial Read Only Memory TLB Translation Lookaside Buffer TOM Top of Memory 81