CS2300-03 1x, 4x, 128x, and 256x Clock Multiplier with Internal LCO Features Ordering Information Clock Multiplier / Jitter Reduction The CS2300-03 is available in a 10-pin MSOP package in Commercial (-10°C to +70°C) grade. Customer development kits are also available for custom device prototyping and device evaluation. Please see “Ordering Information” on page 2 for complete details. – Generates a Low Jitter 6 - 75 MHz Clock from a Jittery 23 kHz to 30 MHz Clock Source Internal LCO Reference Clock 128 Hz Loop Filter Bandwidth Selectable Multiplication Factors – 1x, 4x, 128x, and 256x Selectable Aux Output Pin Minimal Board Space Required – No External Analog Loop-filter Components Pin-Out Diagram VD 1 10 GND PLL_OUT AUX_OUT 2 9 3 8 4 7 CLK_IN 5 6 M0 M1 CLK/PLL FILTN FILTP General Description The CS2300-03 is an extremely versatile system clocking device that utilizes a programmable phase lock loop. The CS2300-03 is based on a hybrid analog-digital PLL architecture comprised of a unique combination of a Delta-Sigma Fractional-N Frequency Synthesizer and a Digital PLL. This architecture allows for generation of a low-jitter clock relative to an external noisy synchronization clock with frequencies as low as 23 kHz. The CS2300-03 is a CS2300-OTP device that has been preconfigured at the factory. There are three hardware configuration pins available for mode and feature selection. Hardware Controls Settings M1 0 0 1 1 M0 0 1 0 1 PLL_OUT 1x CLK_IN 4x CLK_IN 128x CLK_IN 256x CLK_IN CKL/PLL AUX_OUT Source 0 CLK_IN 1 PLL_OUT VD FILTP 0.1 µF 0.1 µF LCO FILTN Ratio Selection M1 M0 M[1:0] 00=1x 01=4x 10=128x 11=256x CLK_IN Advance Product Information http://www.cirrus.com 3.3 V GND Fractional-N Frequency Synthesizer PLL_OUT N CLK/PLL 6 MHz to 75 MHz PLL Output AUX Output Source Select PLL_OUT Output to Input Clock Ratio 23 kHz to 30 MHz Frequency Reference 1 µF AUX_OUT 128 Hz BW Digital PLL & Fractional N Logic CLK_IN 23 kHz to 75 MHz AUX Output This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved) February '08 PS856A1 CS2300-03 1. PIN DESCRIPTIONS 2. SPECIFICATIONS Please see the CS2300-OTP datasheet for package information, device characteristics, and specifications except where noted due to specific programming options. Pin Name # Pin Description VD 1 Digital Power GND 2 Ground PLL_OUT 3 PLL Clock Output AUX_OUT 4 AUX Output CLK_IN 5 Clock Input FILTP FILTN 6 7 LCO Filter Connections CLK/PLL 8 AUX Output Source Selection Input M1 M0 9 10 Mode Selection Inputs 3. OPERATIONAL INFORMATION See the CS2300-OTP datasheet for additional pin description information. Complete operational information can be found in the CS2300-OTP datasheet. Specific operational details dictated by the programming of the CS2300-03 are included below. • The PLL clock output is forced to 0 when the PLL is unlocked, both upon loss of the CLK_IN signal or briefly when switching mode pin configurations. • The minimum loop filter bandwidth once locked is 128 Hz. 4. CONFIGURATION INFORMATION The CS2300-03 has been factory pre-programmed with a unique configuration. The following table outlines the specific configuration profile which can be compared to the CS2300-OTP datasheet for detailed functional descriptions. OTP Modal and Global Configuration Parameters Form Mode 0 Mode 1 Ratio 0 (dec) 1 4 Ratio 0 (hex) 00:10:00:00 00:40:00:00 RModSel1 0 0 RModSel0 0 0 AuxOutSrc1 0 0 AuxOutSrc0 1 1 AutoRMod 0 0 Global Configuration Set ClkSkipEn AuxLockCfg ClkOutUnl LFRatioCfg M2Cfg2 0 0 0 1 1 ClkIn_BW2 ClkIn_BW1 ClkIn_BW0 1 1 1 Mode 2 128 08:00:00:00 0 0 0 1 0 M2Cfg1 1 Mode 3 256 10:00:00:00 0 0 0 1 0 M2Cfg0 1 5. ORDERING INFORMATION Product Description Package Pb-Free Grade Temp Range Container Rail CS2300-03 Clocking Device 10L-MSOP Yes Commercial -10° to +70°C CDK-2000 Evaluation Platform - Yes - - PS856A1 Order# CS230003-CZZ Tape and CS230003-CZZR Reel - CDK-2000-LCO 2 CS2300-03 6. REVISION HISTORY Release A1 Changes Initial Release Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find one nearest you, go to www.cirrus.com. IMPORTANT NOTICE “Advance” product information describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries (“Cirrus”) believe that the information contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. 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All other brand and product names in this document may be trademarks or service marks of their respective owners. PS856A1 3