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9LPRS525 Dataheets PDF



Part Number 9LPRS525
Manufacturers Integrated Device Technology
Logo Integrated Device Technology
Description ICS9LPRS525
Datasheet 9LPRS525 Datasheet9LPRS525 Datasheet (PDF)

DATASHEET 56-pin CK505 for Intel Systems Recommended Application: 56-pin CK505 compatible clock, w/fully integrated Vreg and series resistors on differential outputs Output Features: • 2 - CPU differential low power push-pull pairs • 7 - SRC differential push-pull pairs • 1 - CPU/SRC selectable differential low power push-pull pair • 1 - SRC/DOT selectable differential low power push-pull pair • 1 - SRC/SE selectable differential push-pull pair/Single-ended outputs • 5 - PCI, 33MHz • 1 - USB, 4.

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DATASHEET 56-pin CK505 for Intel Systems Recommended Application: 56-pin CK505 compatible clock, w/fully integrated Vreg and series resistors on differential outputs Output Features: • 2 - CPU differential low power push-pull pairs • 7 - SRC differential push-pull pairs • 1 - CPU/SRC selectable differential low power push-pull pair • 1 - SRC/DOT selectable differential low power push-pull pair • 1 - SRC/SE selectable differential push-pull pair/Single-ended outputs • 5 - PCI, 33MHz • 1 - USB, 48MHz • 1 - REF, 14.318MHz Key Specifications: • CPU outputs cycle-cycle jitter < 85ps • SRC output cycle-cycle jitter < 125ps • PCI outputs cycle-cycle jitter < 250ps • +/- 100ppm frequency accuracy on all outputs • SRC outputs meet PCIe Gen2 when sourced from PLL3 Pin Configuration PCI0/CR#_A 1 VDDPCI PCI1/CR#_B PCI2/TME PCI3/CFG0 PCI4/SRC5_EN PCI_F5/ITP_EN GNDPCI VDD48 USB_48MHz/FSLA GND48 VDD96IO DOTT_96_LRS/SRCT0_LRS DOTC_96_LRS/SRCC0_LRS GND VDD SRCT1_LRS/SE1 SRCC1_LRS/SE2 GND VDDPLL3IO SRCT2_LRS/SATAT_LRS SRCC2_LRS/SATAC_LRS GNDSRC SRCT3_LRS/CR#_C SRCC3_LRS/CR#_D VDDSRCIO SRCT4_LRS SRCC4_LRS 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 SCLK 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 SDATA REF0/FSLC/TEST_SEL VDDREF X1 X2 GNDREF FSLB/TEST_MODE CK_PWRGD/PD# VDDCPU CPUT0_LRS CPUC0_LRS GNDCPU CPUT1_F_LRS CPUC1_F_LRS VDDCPUIO NC CPUT2_ITP_LRS/SRCT8_LRS CPUC2_ITP_LRS/SRCC8_LRS VDDSRCIO SRCT7_LRS/CR#_F SRCC7_LRS/CR#_E GNDSRC SRCT6_LRS SRCC6_LRS VDDSRC PCI_STOP#/SRCT5_LRS CPU_STOP#/SRCC5_LRS ICS9LPRS525 Features/Benefits: • Supports spread spectrum modulation, 0 to -0.5% down spread • Supports CPU clks up to 400MHz • Uses external 14.318MHz crystal, external crystal load caps are required for frequency tuning Table 1: CPU Frequency Select Table FSLC B0b7 0 0 0 0 1 1 1 1 2 FS LB B0b6 0 0 1 1 0 0 1 1 1 FSLA B0b5 0 1 0 1 0 1 0 1 1 CPU MHz 266.66 133.33 200.00 166.66 333.33 100.00 400.00 SRC MHz PCI MHz REF MHz USB DOT MHz MHz 100.00 33.33 14.318 48.00 96.00 Reserved 1. FSLA and FSLB are low-threshold inputs.Please see VIL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values. Also refer to the Test Clarification Table. 2. FSLC is a three-level input. Please see the VIL_FS and VIH_FS specifications in the Input/Supply/Common Output Parameters Table for correct values. 56-SSOP & TSSOP IDTTM PC MAIN CLOCK 9LPRS525 1484C—04/20/10 1 ICS9LPRS525 PC MAIN CLOCK Pin Description PIN # PIN NAME TYPE DESCRIPTION 3.3V PCI clock output or Clock Request control A for either SRC0 or SRC2 pair The power-up default is PCI0 output, but this pin may also be used as a Clock Request control of SRC pair 0 or SRC pair 2 via SMBus. Before configuring this pin as a Clock Request Pin, the PCI output must first be disabled in byte 2, bit 0 of SMBus address space . After the PCI output is disabled (high-Z), the pin can then be set to serve as a Clock Request pin for either SRC pair 2 or pair 0 using the CRA#_EN bit located in byte 5 of SMBUs address space. Byte 5, bit 7 0 = PCI0 enabled (default) 1= CRA# enabled. Byte 5, bit 6 controls whether CRA# controls SRC0 or SRC2 pair Byte 5, bit 6 0 = CRA# controls SRC0 pair (default), 1= CRA# controls SRC2 pair Power supply for PCI clocks, nominal 3.3V 3.3V PCI clock output/Clock Request control B for either SRC1 or SRC4 pair The power-up default is PCI1 output, but this pin may also be used as a Clock Request control of SRC pair 1 or SRC pair 4 via SMBus. Before configuring this pin as a Clock Request Pin, the PCI output must first be disabled in byte 2, bit 1 of SMBus address space . After the PCI output is disabled (high-Z), the pin can then be set to serve as a Clock Request pin for either SRC pair 1 or pair 4 using the CRB#_EN bit located in byte 5 of SMBUs address space. Byte 5, bit 5 0 = PCI1 enabled (default) 1= CRB# enabled. Byte 5, bit 6 controls whether CRB# controls SRC1 or SRC4 pair Byte 5, bit 4 0 = CRB# controls SRC1 pair (default) 1= CRB# controls SRC4 pair 3.3V PCI clock output / Trusted Mode Enable(TME) Latched Input. This pin is sampled on power-up as follows 0=Overclocking of CPU and SRC allowed 1=Overclocking of CPU and SRC NOT allowed After being sampled on power-up, this pin becomes a 3.3V PCI Output 3.3V PCI clock output/Configuration Strap. See PCI3 Configuration Table for more information 3.3V PCI clock output / SRC5 pair or PCI_STOP#/CPU_STOP# enable strap. On powerup, the logic value on this pin determines if the SRC5 pair is enabled or if CPU_STOP#/PCI_STOP# is enabled (pins 29 and 30). The latched value controls the pin function on pins 29 and 30 as follows 0 = PCI_STOP#/CPU_STOP# 1 = SRC5/SRC5# Free running PCI clock output and ITP/SRC8 enable strap. This output is not affected by the state of the PCI_STOP# pin. On powerup, the state of this pin determines whether pins 38 and 39 are an ITP or SRC pair. 0 =SRC8/SRC8# 1 = ITP/ITP# Ground pin for th.


VN0109 9LPRS525 EN29GL064


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