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| CALIFORNIA MICRO DEVICES PACRG P/Active High Performance GTL/ECL Local Termination Network Features * Designed especially for Pentium Pro and RISCbased computers/servers * Provides high speed bus termination * Reduces ground bounce with center ground pin placement * Terminates 22 lines in a QSOP package * Saves board space and reduces assembly cost Product Description CAMD's P/Active RG GTL+ Local Bus Terminator is ideal for Pentium Pro and related high speed bus termination applications where a resistor approach is deemed suitable. This device also meets the high-speed bus termination demands of microprocessors like Motorola's PowerPC, DEC's Alpha, Sun's SPARC, and SGI's MIPs processor, as well as other high performance RISC processors for embedded control applications. The PACRG offers 22 terminations per package and meets all related Intel specifications for Pentium Pro termination requirements. Four popular values are available for a variety of bus termination applications and line impedance requirements: 47, 50, 56 and 68 ohms. The P/Active RG Termination Networks provide high performance, high reliability, and low cost through manufacturing efficiency. The termination resistor elements are fabricated using proprietary state-of-the-art thin film technology. CAMD's highly integrated solution is siliconbased and has the same enhanced reliability characteristics as today's microprocessor products. The thin film resistors have very high stability over a wide temperature range, over applied voltage, and over life. In addition, the QSOP industry standard packaging is manufacturingfriendly and yields the high reliability of other semiconductor components. The P/Active RG Pentium Pro Termination Network provides a complete 300 point termination solution in only 14 QSOP packages. Refer to AP-201 Termination Application Note and AP-203 GTL+ Termination Application Note for further information. Applications * Pentium Pro servers * Pentium Pro desk top systems * GTL, ECL terminator for embedded processor busses S TA N D A R D S P E C I F I C AT I O N S Absolute Tolerance (R) Operating Temperature Range Power Rating/Resistor Storage Temperature Package Power Rating 5% 0C to 70C 100mW -65C to 150C 1.00w, Max RT 24 23 RT 22 PIN DIAGRAM 21 20 19 18 17 16 15 14 13 S TA N D A R D VA L U E S R () 47 50 56 68 Code 470 500 560 680 1 2 3 4 5 6 7 8 9 10 11 12 S TA N D A R D PA R T O R D E R I N G I N F O R M AT I O N Package R Code 470(1%) 500(1%) 560(1%) 680(1%) Pins 24 24 24 24 Style QSOP QSOP QSOP QSOP Ordering Part Number Tubes PAC470RGQ/T PAC500RGQ/T PAC560RGQ/T PAC680RGQ/T Tape & Reel PAC470RGQ/R PAC500RGQ/R PAC560RGQ/R PAC680RGQ/R Part Marking PAC470RGQ PAC500RGQ PAC560RGQ PAC680RGQ +'" (c) 2000 California Micro Devices Corp. All rights reserved. 8/10/2000 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 1 CALIFORNIA MICRO DEVICES Signal at Termination and Victim Line (TA=25OC) (See Test Circuit) PACRG Channel 1 (500mV/division) Termination Signal, Channel 2 (250mV/division) Victim Voltage. The victim voltage crosstalk measures 65mV in the critical areas around the system clock. The system clock occurs approximately 4ns before each data transition. The horizontal dashed lines are 65mV apart. The time scale is 5.0ns/division. The signal voltage rise and fall times have been adjusted at the driver to conform to Intel specifications.) Measurements made using Tektronix TDS820 6 GHz Digitizing Oscilloscope with P6207 FET Probes. Cha 500mV/De Cha 250mV/De Test Circuit Block Diagram (c)2000 California Micro Devices Corp. All rights reserved. 2 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 8/10/2000 CALIFORNIA MICRO DEVICES PACRG Test Circuit TP1 TP1 PB1 GND JP1 1 2 3 4 5 6 7 8 POWER GND GND VCC_5 GND VCC_3 GND VCC_1.5 GND GND VCC_5 W1 SMA PULSE_GEN 2 4 6 8 11 13 15 17 1 19 U2 1A1 1A2 1A3 1A4 2A1 2A2 2A3 2A4 1G 2G 74FCT244 GND GND 1Y1 1Y2 1Y3 1Y4 2Y1 2Y2 2Y3 2Y4 18 16 14 12 9 7 5 3 BUFFER1 VCC_3 VCC_1.5 BUFFER1 GND RIN1 100 RIN2 100 GND GATE1 GATE2 GATE3 GATE4 TP4 PB4 TP4 GND VCC_5 C17 GND U1 VCC_5 1 2 3 5 6 7 8 9 10 12 13 14 15 16 17 19 20 21 22 23 24 26 27 28 /OEAB LEAB A1 /CEAB CLKAB B1 56 55 54 52 51 49 48 47 45 44 43 42 41 40 38 37 36 35 34 33 31 30 29 0.1uF GND VCC_1.5 GND VCC_1.5 C8 0.1uF GND GND GND VCC_3 R3 1K GATE1 VREF GND C9 0.1uF A2 A3 VCC_3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 VCC_3 A16 A17 CLKIN /OEBA LEBA 74GTL16616 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 VREF B16 B17 CLKOUT CLKBA /CEBA R1 GTL1 GTL2 GTL3 GTL4 GTL5 GTL6 GTL7 GTL8 GTL9 GTL10 GTL11 GTL_TEST VREF VICTIM 56 C15 1000pF C16 0.1uF GATE2 C24 1000pF C25 0.1uF R4 2K GND GATE3 GND GND GND VCC_3 VCC_3 GATE4 GND C10 0.1uF GND C13 1000pF C14 0.1uF VCC_5 GND C11 0.1uF GND VCC_5 GND GND GND C12 0.1uF GND TP5 PB5 VICTIM VCC_1.5 GND U3 R2 GTL1 1 2 3 4 5 6 7 8 9 10 11 12 R R R R R G R R R R R R PRN331A TP3 PB3 TP3 R R R R R G R R R R R R 24 23 22 21 20 19 18 17 16 15 14 13 GTL11 GTL11 GTL10 GTL10 GTL9 56 C18 1000pF C19 0.1uF GTL2 GTL2 GTL3 VTT GTL3 GTL4 GTL4 GTL5 GTL5 GTL6 VTT GTL9 GTL8 GTL8 GTL7 GTL7 GTL6 VCC_1.5 GND C20 1000pF C21 0.1uF C22 1000pF C23 0.1uF GND GND GND (c) 2000 California Micro Devices Corp. All rights reserved. 8/10/2000 215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 www.calmicro.com 3 |
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