MPC926508SD

Freescale Semiconductor, Inc. MOTOROLA Order number: MPC926508/D Rev 2, 02/2004 SEMICONDUCTOR TECHNICAL DATA MPC926508 Networking Clock Source The MPC926508 is a low cost, low jitter, high performance clock synthesizer for networking applications. Using analog Phase-Locked Loop (PLL) techniques, the device accepts an input to produce multiple output clocks for networking chips, PCI devices, SDRAM, and ASICs. The MPC926508 outputs all have 0 ppm synthesis error. NETWORKING CLOCK SOURCE Freescale Semiconductor, Inc... Features • Packaged in 20 pin narrow (150 mil) SSOP (QSOP) • 25 or 125 MHz fundamental clock input or 25 MHz crystal input • Two output clocks • SDRAM frequencies of 100 and 133 MHz • Zero ppm synthesis error in all clocks • Full CMOS output swing with 25 mA output drive capability at TTL levels • Advanced, low power, sub-micron CMOS process • 3.3V operating voltage VDD 2 SD SUFFIX 20 LEAD SSOP CASE 1461 GND 2 Output Buffer SEL_25 OUT1 (100 MHz) Clock Synthesis and Control Circuitry SEL_CLK Output Buffer 25 MHz or 125 MHz clock or 25 MHz crystalX1 OUT2 (133.33 MHz) Clock Buffer / Crystal Oscillator X2 *Optional crystal capacitors are shown and may be required for tuning of initial accuracy (determined once per board). © Motorola, Inc. 2004 For More Information On This Product, Go to: www.freescale.com Freescale Semiconductor, Inc. MPC926508 Table 1. Function table Control Freescale Semiconductor, Inc... Default 0 1 SEL_25 1 125 25 SEL_CLK 1 XTAL REF_CLK X2 1 20 NC NC 2 19 SEL_CLK X1/ICLK 3 18 NC VDD 4 17 OUT1 (100 MHz) NC 5 16 VDD GND 6 15 NC NC 7 14 GND NC 8 13 NC NC 9 12 NC OUT2 (133.33 MHz) 10 11 SEL_25 MPC926508 NC = Not Connected Figure 1. MPC926508 Pin Assignment Table 2. Pin Description Number Name Type Description 1 X2 XO 2 NC - 3 X1/ICLK XI Crystal connection. Connect to a fundamental crystal or clock input. 4 VDD P Connect to +3.3 V. Must be same as other VDD. 5 NC - Not Connected 6 GND P Connect to ground. 7 NC - Not Connected 8 NC - Not Connected 9 NC - Not Connected 10 OUT1 (133.33 MHz) O 133.33 MHz Output 11 SEL_25 I REF_CLK or XTAL Input Selection. 12 NC - Not Connected 13 NC - Not Connected 14 GND P Connect to ground. 15 NC - Not Connected 16 VDD P Connect to +3.3 V. Must be same as other VDD. 17 OUT2 (100 MHz) O 100 MHz Output 18 NC - Not Connected 19 SEL_CLK I 25 or 125 MHz REF_CLK Selection. 20 NC - Not Connected Crystal connection. Connect to a crystal or leave unconnected for a clock input. Not Connected Key: XI, XO = crystal connections; I = Input with internal pull-up resistor; O = Output; P = power supply connection. 2 Networking Clock Source For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. MPC926508 Table 3. ABSOLUTE MAXIMUM RATINGSa Symbol VDD Characteristics Min TA Ambient Operating Temperature TA Ambient Operating Temperature, I version Freescale Semiconductor, Inc... TS Max Unit 3.9 V Referenced to GND -0.5 VDD + 0.5 V Referenced to GND 0 70 °C -40 85 °C Industrial temp 260 °C Max of 20 seconds 150 °C Supply Voltage Inputs and Clock Outputs TSOL Typ Soldering Temperature Storage Temperature -65 Condition a. Absolute maximum continuous ratings are those maximum values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation at absolute-maximum-rated conditions is not implied. Table 4. DC CHARACTERISTICS (VDD = 3.3V ± 10%, TA = -40°C to 85°C) Symbol Characteristics Min Typ VDD/2+1 2 VDD/2 Max Unit Condition VIH Input High VoltageX1 pin only all I type inputs VIL Input Low VoltageX1 pin only all I type inputs VOH Output High Voltage VOL Output Low Voltage VOH Output High Voltage, CMOS level IDD Operating Supply Current 35 mA No Load Short Circuit Current 90 mA Each Output Internal Pull-Up Resistor 200 kΩ SEL_25, SEL_CLK VDD/2 V V VDD/2-1 0.8 2.4 0.4 VDD - 0.4 V V V IOH=-25 mA V IOL= 25 mA V IOH=-8 mA Table 5. AC CHARACTERISTICS (VDD = 3.3V ± 10%, TA = -40°C to 85°C) Symbol Characteristics fREF Input Frequency fREF Input Frequency Min Typ Max Unit Condition 12 25 27 MHz Crystal Oscillator 125 MHz External Input tr Output Clock Rise Time 1 ns 0.8 to 2.0V tf Output Clock Fall Time 1 ns 2.0 to 0.8V 60 % At VDD/2 0 ppm All clocks DCO Output Clock Duty Cycle 40 50 Frequency Error tJIT(CC) Jitter (Cycle-to-Cycle) MOTOROLA 300 Networking Clock Source For More Information On This Product, Go to: www.freescale.com ps Variation from mean 3 Freescale Semiconductor, Inc. MPC926508 APPLICATIONS INFORMATION Freescale Semiconductor, Inc... External Components The MPC926508 requires a minimum number of external components for proper operation. Decoupling capacitors of 0.01µF should be connected between each VDD and GND (pins 4 and 6, pins 16 and 14), as close to the MPC926508 as possible. A series termination resistor of 33 Ω may be used for each clock output. The crystal must be connected as close to the chip as possible. The crystal should be a fundamental mode (do not use third overtone), parallel resonant. Crystal capacitors should be connected from pins X1 to ground and X2 to ground to optimize the initial accuracy. The value of these capacitors is given by the following equation, where CL is the crystal load capacitance: Crystal caps (pF) = (CL-6) x 2. So for a crystal with 16 pF load capacitance, two 20 pF caps should be used. 4 Networking Clock Source For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. MPC926508 PACKAGE DIMENSIONS SD SUFFIX 20-LEAD SSOP PACKAGE CASE 1461-01 ISSUE O .236 .157 .150 4 D .061 .055 5 PIN 1 ID 18X Freescale Semiconductor, Inc... 1 20 B .025 B 4 4 B A .0125 .344 .337 10 CL 5 11 3 2X .118 .003 H 2X 10 TIPS .010 C H C A-B D SEATING PLANE 20X .004 C A-B D 7 A A 0˚ (.010) MIN BASE METAL R.003 MIN .010 .007 (.008) .010 .0098 .0040 GAUGE PLANE .012 .008 .007 PLATING C A-B D M SECTION A-A 8˚ 0˚ .035 .016 6 SECTION B-B 8 NOTES: 1. DIMENSIONS ARE IN INCHES. 2. DIMENSIONING AND TOLERANCING PER ASME Y14.5m, 1994. 3. DATUM PLANE H LOCATED AT MOLD PARTING LINE AND COINCIDENT WITH LEAD, WHERE LEAD EXITS PLASTIC BODY AT BOTTOM OF PARTING LINE. 4. DATUM A, B AND D TO BE DETRMINED WHERE CENTERLINE BETWEEN LEADS EXITS PLASTIC BODY AT DATUM PLANE H. 5. THIS DIMENSION DOES NOT INCLUDE MOLD FLASH OR PROTRUSIONS, BUT DO INCLUDE MOLD MISMATCH AND ARE MEASURED AT THE MOLD PARTING LINE. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006 INCHES FOR ENDS AND .008 INCHES FOR SIDES. 6. THIS DIMENSION IS LENGTH OF TERMINAL FOR SOLDERING A SUBSTRATE. 7. FORMED LEADS SHALL BE PLANAR WITH RESPECT TO ONE ANOTHER WITHIN .004 INCHES AT SEATING PLANE. 8. THIS DIMENSION IS DEFINED AS THE DISTANCE FROM THE SEATING PLANE TO THE LOWEST POINT OF THE PACKAGE BODY. CASE 1467-01 ISSUE O DATE 11/20/02 MOTOROLA Networking Clock Source For More Information On This Product, Go to: www.freescale.com 5 Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... NOTES 6 Networking Clock Source For More Information On This Product, Go to: www.freescale.com MOTOROLA Freescale Semiconductor, Inc. Freescale Semiconductor, Inc... NOTES MOTOROLA Networking Clock Source For More Information On This Product, Go to: www.freescale.com 7 Freescale Semiconductor, Inc... Freescale Semiconductor, Inc. Information in this document is provided solely to enable system and software implementers to use Motorola products. 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MOTOROLA and the Stylized M Logo are registered in the US Patent and Trademark Office. All other product or service names are the property of their respective owners. © Motorola, Inc. 2004 HOW TO REACH US: USA/EUROPE/LOCATIONS NOT LISTED: Motorola Literature Distribution P.O. Box 5405, Denver, Colorado 80217 1-800-521-6274 or 480-768-2130 JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center 3-20-1 Minami-Azabu. Minato-ku, Tokyo 106-8573, Japan 81-3-3440-3569 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong 852-26668334 HOME PAGE: http://motorola.com/semiconductors MPC926508 For More Information On This Product, Go to: www.freescale.com