copyright ? cirrus logic, inc. 2008 (all rights reserved) http://www.cirrus.com advance produc t information this document contains information for a new product. cirrus logic reserves the right to mo dify this product without notice. 1x, 2x, 4x, and 8x clock mu ltiplier with internal lco features ? clock multiplier / jitter reduction ? generates a low jitter 6 - 75 mhz clock from a jittery 750 khz to 30 mhz clock source ? internal lco reference clock ? 1 hz loop filter bandwidth ? selectable multiplication factors ? 1x, 2x, 4x, and 8x ? output enable pin ? lock indicator ? minimal board space required ? no external analog loop-filter components general description the cs2300-01 is an extremely versatile system clock- ing device that utilizes a pr ogrammable phase lock loop. the cs2300-01 is based on a hybrid analog-digital pll architecture comprised of a unique combination of a delta-sigma fractional-n fr equency synthesizer and a digital pll. this ar chitecture allows for generation of a low-jitter clock rela tive to an external noisy synchroniza- tion clock with frequencies as low as 750 khz. the cs2300-01 is a cs2300-otp device that has been pre- configured at the factory. there are three hardware con- figuration pins available for mode and feature selection. ordering information the cs2300-01 is available in a 10-pin msop package in commercial (-10c to +70c) grade. customer de- velopment kits are also available for custom device prototyping and device evaluation. please see ?order- ing information? on page 2 for complete details. pin-out diagram hardware controls settings 1 2 3 4 5 6 7 8 9 10 filtp clk_out gnd vd filtn out_en m1 m0 lock clk_in m1 m0 pll_out 00 1x clk_in 01 2x clk_in 10 4x clk_in 11 8x clk_in out_en clk_out 0 enabled 1 high impedance 6 mhz to 75 mhz pll output 3.3 v fractional-n frequency synthesizer 1 hz bw digital pll & fractional n logic output to input clock ratio n 750 khz to 30 mhz frequency reference lco m[1:0] 00=1x 01=2x 10=4x 11=8x ratio selection pll lock indicator output enable/disable filtp filtn 0.1 f clk_in m1 m0 out_en lock vd 0.1 f 1 f gnd clk_out aug '08 ps846a4 cs2300-01
cs2300-01 ps846a4 2 1. pin descriptions see the cs2300-otp datasheet for additional pin de- scription information. 2. specifications please see the cs2300-otp datasheet for package in- formation, device characterist ics, and specifications ex- cept where noted due to specific programming options. 3. operational information complete operational information can be found in the cs2300-otp datasheet. specific operational details dictated by the programmi ng of the cs2300-01 are in- cluded 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 1hz. 4. configuration information the cs2300-01 has been factory pre-programmed with a uniq ue configuration. the following table outlines the spe- cific configuration profile which can be compared to the cs2300-otp datasheet for detailed functional descriptions. 5. ordering information pin name # pin description vd 1 digital power gnd 2 ground clk_out 3 pll clock output lock 4 active low pll lock indicator clk_in 5 clock input filtp filtn 6 7 lco filter connections out_en 8 active low clk_out enable input m1 m0 9 10 mode selection inputs otp modal and global config uration parameters form mode 0 mode 1 mode 2 mode 3 ratio 0 (dec) 12 4 8 ratio 0 (hex) 00:10:00:00 00:20:00:00 00:40:00:00 00:80:00:00 rmodsel1 00 0 0 rmodsel0 00 0 0 auxoutsrc1 11 1 1 auxoutsrc0 11 1 1 autormod 00 0 0 global configuration set clkskipen auxlockcfg clkoutunl lfratiocfg m2cfg2 m2cfg1 m2cfg0 0 0 0 1 0 0 0 clkin_bw2 clkin_bw1 clkin_bw0 0 0 0 product description package pb-free grade temp range container order# cs2300-01 clocking device 10l-msop yes commercial -10 to +70c rail cs230001-czz tape and reel CS230001-CZZR cdk-2000 evaluation platform - yes - - - cdk-2000-lco
cs2300-01 ps846a4 3 6. revision history release changes a1 initial release a2 corrected part number a3 reduced page count and updated formatting a4 updated formatting 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?) be- lieve that the information contained in this document is accurate and reliable. however, the information is subject to change w ithout 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 t o 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 limit ation of liability. no responsibility is assumed by cirrus fo r 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. this document is the property of cirrus and by furnishing this information, cirrus grants no license, express or implied under any patents, mask work rights, co pyrights, trademarks, trade secrets or other intellectual property rights. cirrus owns the copyrights associated with the information contained herein and gives conse nt for copies to be made of the infor- mation only for use within your organization with respect to cirrus integrated circuits or other products of cirrus. this conse nt does not extend to other copying such as copying for general distribution, advertising or promotional purposes, or for creating any work for resale. certain applications using semi conductor products may involve potential risks of death, per sonal injury, or severe prop- erty or environmental damage (?critical applications?). cirrus products are not designed, au thorized or warranted for use in products surgically implanted into the body, automotive safety or security devices, life su pport products or other crit- ical applications. inclus ion of cirrus products in such appl ications is understood to be full y at the customer?s risk and cir- rus disclaims and makes no warranty, expres s, statutory or implied, including the implied warranties of merchantability and fitness for particular purpose, with regard to any cirrus product that is used in such a manner. if the customer or custom- er?s customer uses or permits the use of cirrus products in cr itical applications, customer agrees, by such use, to fully indemnify cirrus, its officers, directors, employees, distributors and other agents from any a nd all liability, including at- torneys? fees and costs, that may result fr om or arise in connection with these uses. cirrus logic, cirrus, and the cirrus logic logo designs are trademarks of cirrus logic, inc. all other brand and product names in this document may be trademarks or service marks of their respective owners.
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