41316401TH Rev.4 13 /2.1 Main Board (CRM PWB)Figure 2-2 provides the block diagram of the main control board (CRM PWB).Figure 2-214.31818MHzCrystal ResonatorCY2292CY2308Delay CDC516SDRAM DIMM × 4ROM DIMM × 3FET SW162212Flash ROMIMI530Fluctuation CircuitLVC244LVC245EEPROMC2 LSIMHM2031-002PCI BusLAN BoardL60851USBCentro IDE HDDLVC161284Buf16244Buf16244DelayPU Board Connector, 200 Pinsto C2 LSI and3.3V ICsto 5V ICsInverter RESET-P3.3V5V ResetDS18342.0VRegulator2.5VRegulatorC1 LSIMHM2030-002PPC750L2CacheInternal-CLK-AdjustingResistance80MHz80MHz80MHz40MHz80MHz × 2 80MHz × 1633MHz~2 48MHzIF Bus33MHzSPDPU-CU I/F,Operator PanelA/D, Cont (SUB Bus)Y, M, C and K Video DataDDADContDD DA, Cont A, Cont A, ContA, ContA/D, Cont