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273804-002 Datasheet(PDF) 19 Page - Intel Corporation |
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273804-002 Datasheet(HTML) 19 Page - Intel Corporation |
19 / 82 page Ultra-Low Voltage Intel ® Celeron® Processor — 650 MHz and 400 MHz Datasheet 19 3.0 Electrical Specifications 3.1 Processor System Signals Table 5 lists the processor system signals by type. All AGTL signals are synchronous with the BCLK and BCLK# signals. All TAP signals are synchronous with the TCK signal except TRST#. All CMOS input signals may be applied asynchronously. The APIC data and TAP outputs are Open-drain and should be pulled up to 1.5 V using resistors with the values shown in Table 6. If Open-drain drivers are used for input signals, then they should also be pulled up to the appropriate voltage using resistors with the values shown in Table 6. Table 5. System Signal Groups Group Name Signals AGTL Input BPRI#, DEFER#, RESET#, RSP# AGTL Output PRDY# AGTL I/O A[35:3]#, ADS#, AERR#, AP[1:0]#, BERR#, BINIT#, BNR#, BP[3:2]#, BPM[1:0]#, BREQ0#, D[63:0]#, DBSY#, DEP[7:0]#, DRDY#, HIT#, HITM#, LOCK#, REQ[4:0]#, RP#, RS[2:0]#, TRDY# 1.5 V CMOS Input A20M#, DPSLP#, FLUSH#, IGNNE#, INIT#, LINT0/INTR, LINT1/NMI, PREQ#, SMI#, STPCLK# 1.8 V CMOS Input PWRGOOD 1.5 V Open Drain Output FERR#, IERR# 3.3 V Open Drain Output BSEL[1:0], VID[4:0] 1.25 V input VTTPWRGD Clock BCLK, BCLK# (Differential Mode) 2.5 V Clock Input BCLK (Single Ended Mode) APIC Clock PICCLK APIC I/O PICD[1:0] Thermal Diode THERMDC, THERMDA TAP Input TCK, TDI, TMS, TRST# TAP Output TDO Power/Other CLKREF, CMOSREF, EDGECTRLP, NC, NCTRL, PLL1, PLL2, RTTIMPEDP, VCC, VCCT, VREF, VSS, NOTES: 1. VCC is the power supply for the core logic. 2. PLL1 and PLL2 are power/ground for the PLL analog section. See Section 3.2.2 for details. 3. VCCT is the power supply for the system bus buffers. 4. VREF is the voltage reference for the AGTL input buffers. 5. VSS is system ground. |
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