The 9FGL6251 is an intelligent buffer/clock generator tailored for single and dual-ported nVME SSDs. It supports Common (CC) and Independent Reference (IR) clocking architectures and is ideal for U.2 and M.2 form factors. The device is also useful in PCIe master/slave and clock multiplexing applications, with an internal clock generator as a third input channel.
 
For information regarding evaluation boards and material, please contact your local IDT sales representative.
 

Features

  • Automatically detects presence or absence of input clocks and switches clock modes
  • One open-drain CC_IR output indicates PCIe clock mode
  • Integrated crystal option available (Q option)
  • Two 100MHz Low-power HCSL (LP-HCSL) outputs; 85Ω output impedance
  • Integrated terminations on DIF outputs save 8 resistors
  • 201, 301 configurations for SRnS (IR) or CC architectures default to 0% SSC
  • 202, 302 configurations for SRIS (IR) or CC architectures default to -0.5% SSC
  • SMBus-selectable -0.25% SSC
  • Choice of 25MHz or 33 1/3MHz reference clock
  • REF clock output saves external XO
  • 2.5V or 3.3V operating voltage (VDDREF is 1.8V)
  • 4 × 4 mm 28-VQFP-N package with external crystal
  • 4 × 4 mm 28-LGA package with optional internal crystal
  • Easy AC-coupling to other logic families, see IDT application note AN-891
  • For devices with 100Ω output impedance, see 9FGL6241

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) 説明 Output Impedance Temp. Grade Carrier Type Buy Sample
9FGL6251AP201NDGI Active NDG28 VFQFPN 28 25MHz external XTAL, SSC off (SRNS) 85 I Tray
Availability
9FGL6251AP201NDGI8 Active NDG28 VFQFPN 28 25MHz external XTAL, SSC off (SRNS) 85 I Reel
Availability
9FGL6251AP202NDGI Active NDG28 VFQFPN 28 25MHz external XTAL, SSC on (SRIS) 85 I Tray
Availability
9FGL6251AP202NDGI8 Active NDG28 VFQFPN 28 25MHz external XTAL, SSC on (SRIS) 85 I Reel
Availability
9FGL6251AP301NDGI Active NDG28 VFQFPN 28 33.33MHz external XTAL, SSC off (SRNS) 85 I Tray
Availability
9FGL6251AP301NDGI8 Active NDG28 VFQFPN 28 33.33MHz external XTAL, SSC off (SRNS) 85 I Reel
Availability
9FGL6251AP302NDGI Active NDG28 VFQFPN 28 33.33MHz external XTAL, SSC on (SRIS) 85 I Tray
Availability
9FGL6251AP302NDGI8 Active NDG28 VFQFPN 28 33.33MHz external XTAL, SSC on (SRIS) 85 I Reel
Availability
9FGL6251AQ201LTGI Active LTG28 LGA 28 25MHz internal XTAL, SSC off (SRNS) 85 I Tray
Availability
9FGL6251AQ201LTGI8 Active LTG28 LGA 28 25MHz internal XTAL, SSC off (SRNS) 85 I Reel
Availability
9FGL6251AQ202LTGI Active LTG28 LGA 28 25MHz internal XTAL, SSC on (SRIS) 85 I Tray
Availability
9FGL6251AQ202LTGI8 Active LTG28 LGA 28 25MHz internal XTAL, SSC on (SRIS) 85 I Reel
Availability
9FGL6251AQ301LTGI Active LTG28 LGA 28 33.33MHz internal XTAL, SSC off (SRNS) 85 I Tray
Availability
9FGL6251AQ301LTGI8 Active LTG28 LGA 28 33.33MHz internal XTAL, SSC off (SRNS) 85 I Reel
Availability
9FGL6251AQ302LTGI Active LTG28 LGA 28 33.33MHz internal XTAL, SSC on (SRIS) 85 I Tray
Availability
9FGL6251AQ302LTGI8 Active LTG28 LGA 28 33.33MHz internal XTAL, SSC on (SRIS) 85 I Reel
Availability

技術資料

タイトル 他の言語 タイプ フォーマット ファイルサイズ 日付
データシート
9FGL6241_6251 Datasheet Datasheet PDF 436 KB 11月 9, 2018
ユーザーガイド
Timing Products for NXP (Freescale) i.MX 简体中文 Guide PDF 321 KB 10月 31, 2018
9FGx08 PCIe Clock Generator Evaluation Boards User Guide Manual - Eval Board PDF 748 KB 10月 26, 2015
アプリケーションノート、ホワイトペーパー
AN-975 Cascading PLLs Application Note PDF 128 KB 8月 2, 2017
AN-891 Driving LVPECL, LVDS, CML, and SSTL Logic with IDT's "Universal" Low-Power HCSL Outputs Application Note PDF 354 KB 12月 10, 2015
AN-879 Low-Power HCSL vs Traditional HCSL Application Note PDF 150 KB 4月 7, 2015
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB 5月 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB 5月 11, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB 5月 10, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB 5月 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB 5月 6, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB 5月 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB 4月 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB 4月 23, 2014
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB 3月 11, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB 1月 14, 2014
PCN / PDN
PCN# : MM1610-01 Improve performance to meet the new PCIe Product Change Notice PDF 23 KB 10月 10, 2016
その他資料
Timing Solutions Products Overview Overview PDF 4.11 MB 10月 31, 2018
PCI Express® Timing Solutions Overview Overview PDF 301 KB 4月 19, 2018
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB 4月 28, 2016
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB 4月 24, 2016
ソフトウェア/ツール
Software for PCIe Evaluation Kits Software ZIP 440 KB 3月 23, 2018

ソフトウェア/ツール

タイトル 他の言語 タイプ フォーマット ファイルサイズ 日付
Software for PCIe Evaluation Kits Software ZIP 440 KB 3月 23, 2018