3.3V SDRAM Buffer
June 2005 rev 0.4
ASM2I2313ANZ
13 Output, 3.3V SDRAM Buffer for Desktop PCs with 3 DIMMs
Features
One input to 13 Ou...
Description
June 2005 rev 0.4
ASM2I2313ANZ
13 Output, 3.3V SDRAM Buffer for Desktop PCs with 3 DIMMs
Features
One input to 13 Output Buffer/Driver Supports up to three SDRAM DIMMs One additional outputs for feedback Serial interface for output control Low skew outputs Up to 133MHz operation Multiple VDD and VSS pins for noise reduction Low EMI outputs 28 pin SOIC (300-mil) Package 3.3V operation
Functional Description
The ASM2I2313ANZ is a 3.3V buffer designed to distribute high-speed clocks in desktop PC applications. The part has 13 outputs, 12 of which can be used to drive up to three SDRAM DIMMs, and the remaining can be used for external feedback to a PLL. The device operates at 3.3V and outputs can run up to 133MHz, thus making it compatible with Pentium®*II processors. The ASM2I2313ANZ can be used in conjunction with the clock synthesizer for a complete Pentium II motherboard solution. The ASM2I2313ANZ also includes a serial interface, which can enable or disable each output clock. On power-up, all output clocks are enabled.
*Pentium is a registered trademark of Intel Corporation.
Block Diagram
BUF_IN
SDATA SCLOCK
Serial Interface Decoding
SDRAM0 SDRAM1 SDRAM2 SDRAM3 SDRAM4 SDRAM5 SDRAM6 SDRAM7 SDRAM8 SDRAM9 SDRAM10 SDRAM11 SDRAM12
Alliance Semiconductor 2575, Augustine Drive Santa Clara, CA Tel: 408.855.4900 Fax: 408.855.4999 www.alsc.com
Notice: The information in this document is subject to change without notice.
June 2005 rev 0.4
Pin Configu...
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