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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ICS843241 датащи(PDF) 1 Page - Renesas Technology Corp |
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ICS843241 датащи(HTML) 1 Page - Renesas Technology Corp |
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1 / 19 page  FEMTOCLOCKS™ SAS/SATA CLOCK GENERATOR ICS843241 IDT™ / ICS™ SAS/SATA CLOCK GENERATOR 1 ICS843241BG REV. A AUGUST 20, 2008 GENERAL DESCRIPTION The ICS843241 is a low jitter, high performance clock generator and a member of the FemtoClocks™ family of silicon timing products. The ICS843241 is designed for use in the SAS-2 interconnect and the three transport protocols that use the SAS-2 interconnect: Serial SCSI Protocol (SSP), Serial ATA Tunneled Protocol (STP), and Serial Management Protocol (SMP). The ICS843241 has excellent (<1ps) RMS phase jitter, over the SAS defined integration range. The ICS843241 uses an external, 25MHz, parallel resonant crystal to generate three selectable output frequencies: 75MHz, 100MHz, 150MHz, and 300MHz. This sili- con based approach provides excellent frequency stability and reliability. The ICS843241 features up, down, and center spread spectrum (SSC) clocking techniques. The up, down and center SSC will be required in the SAS-2 applications that have three clock trees in the HBA and expander ASICs (see Applications Information section, Figure 3). APPLICATIONS: • SAS/ SATA Host Bus Adapters • SATA Port Multipliers • SAS I/O Controllers • TapeDrive and HDD Array Controllers • SAS Edge and Fanout Expanders • HDDs and Tape Drives • Disk Storage Enterprise FEATURES • Designed for use in SAS-2 systems • Up, down and center spread spectrum clocking • One differential 3.3V or 2.5V LVPECL output pair • Selectable output frequencies: 75MHz, 100MHz, 150MHz, 300MHz • RMS phase jitter @ 75MHz, (900kHz – 7.5MHz): 0.70ps (typical) • 3.3V or 2.5V operating supply • 0°C to 70°C ambient operating temperature • Available in lead-free (RoHS 6) packages HiPerClockS™ ICS BLOCK DIAGRAMS OSC FemtoClock™ PLL Q nQ XTAL_IN XTAL_OUT SSC_SEL[1:0] 75MHz, 100MHz, 150MHz or 300MHz See Table 10 for Ordering Information 25MHz Pulldown PIN ASSIGNMENT XTAL_OUT XTAL_IN SSC_SEL0 SSC_SEL1 1 2 3 4 VEE nQ Q VCC 8 7 6 5 ICS843241-XXX 8-Lead SOIC, 150 mil 3.90mm x 4.90mm x 1.37mm package body M Package Top View OSC F_SEL[1:0] Q nQ XTAL_IN XTAL_OUT 25MHz SSC_SEL[1:0] nPLL_SEL F_SEL[1:0] 0 0 75MHz 0 1 100MHz 1 0 150MHz 1 1 300MHz FemtoClock™ PLL 1 0 2 Pulldown Pulldown Pullup:Pulldown PIN ASSIGNMENT 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ICS843241 16-Lead TSSOP 4.4mm x 5.0mm x 0.92mm package body G Package Top View 8-Lead SOIC 16-Lead TSSOP VEE XTAL_OUT XTAL_IN SSC_SEL0 nc nc nc SSC_SEL1 F_SEL1 VEE nPLL_SEL nQ Q VCC F_SEL0 VCC ADDITIONAL ORDERING INFORMATION TABLE r e b m u N t r a Pe g a k c a P y c n e u q e r F t u p t u O G B 1 4 2 3 4 8 S C IP O S S T 6 1z H M 0 0 3 , z H M 0 5 1 , z H M 0 0 1 , z H M 5 7 5 7 - M B 1 4 2 3 4 8 S C IC I O S 8z H M 5 7 0 0 1 - M B 1 4 2 3 4 8 S C IC I O S 8z H M 0 0 1 0 5 1 - M B 1 4 2 3 4 8 S C IC I O S 8z H M 0 5 1 0 0 3 - M B 1 4 2 3 4 8 S C IC I O S 8z H M 0 0 3 |
Аналогичный номер детали - ICS843241 |
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Аналогичное описание - ICS843241 |
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