CY28331
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CY28331OXC (pdf) |
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CY28331OXCT |
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CY28331 Clock Generator for AMD Hammer • Supports AMD Hammer CPU • Two differential pairs of CPU clocks • Eight low-skew/low-jitter PCI clocks • One free-running PCI clock • Four low-skew/low-jitter PCI/HyperTransport clocks • One 48M output for USB • One programmable 24M or 48M for FDC • Three REF 14.318-MHz clocks • programmability • Lexmark Spread Spectrum for optimal electromagnetic interference EMI reduction • SMBus register-programmable options • 5V-tolerance SCLK and SDATA lines • 3.3V operation • Power management control pins • 48-pin SSOP package Block Diagram Table Frequency Table MHz [1] FS PCI_HT 3:0 SEL HT66 0000 X High-Z All outputs except XOUT are three-stated 0001 0010 0011 0100 0101 0110 0111 default 1000 1001 1010 1011 1100 1101 1110 1111 Pin Configuration XIN XOUT 14.31818MHz XTAL /4 PLL1 /2 SEL# FS 0:3 PCISTOP# SPREAD PD# SCLK SDATA Control Logic PLL2 /N STOP CNTL REF 0:2 USB 24_48MHz SRESET# CPUT 0:1 CPUC 0:1 PCI33_F PCI33_ 0:7 *FS0/REF0 VDD XIN Ordering Information Part Number CY28331OC CY28331OCT Lead-free CY28331OXC CY28331OXCT Figure PD# Assertion Waveform Figure PD# Deassertion Waveform Package Type 48-pin SSOP 48-pin SSOP Tape and Reel 48-pin SSOP 48-pin SSOP Tape and Reel Product Flow Commercial, 0° to 70°C Commercial, 0° to 70°C Commercial, 0° to 70°C Commercial, 0° to 70°C Page 15 of 17 [+] Feedback Package Drawing and Dimensions 48-pin Shrunk Small Outline Package O48 CY28331 51-85061-*C AMD is a trademark of Advanced Micro Devices, Inc. Dial-a-Frequency is a registered trademark, and Dial-a-Skew and Dial-a-Ratio are trademarks, of Cypress Semiconductor Corporation. HyperTransport is a licensed trademark of the HyperTransport Technology Consortium. Page 16 of 17 Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. [+] Feedback CY28331 Document History Page Document Title CY28331 Clock Generator for AMD Hammer Document Number 38-07491 ECN NO. Issue Date Orig. of Change Description of Change 120617 11/11/02 RGL New Data Sheet 121407 11/12/02 125988 04/17/03 RGL Changed the power up value of the Byte7 bit6 from 0 to 1 131420 12/05/03 RGL/SDR Changed min. TR value for PCI/Hypertransport from 1 to V/ns Changed min. TF value for PCI/Hypertransport from 1 to V/ns Changed max. TCCJ value for PCI/Hypertransport from 250 to 400 ps 237872 See ECN RGL Minor Change typo error in page one 353939 See ECN RGL Added Lead-free devices Page 17 of 17 [+] Feedback |
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