CY2310ANZ_09 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – 3.3V SDRAM Buffer for Mobile PCs with 4 SO-DIMMs

Features
■ One input to 10 output buffer and driver
■ Supports up to four SDRAM SO-DIMMs
■ Two additional outputs for feedback
■ Serial interface for output control
■ Low skew outputs
■ Up to 100 MHz operation
■ Multiple V_DD and V_SS pins for noise reduction
■ Dedicated OE pin for testing
■ Space saving 28-pin SSOP package
■ 3.3V operation
CY2310ANZ
3.3V SDRAM Buffer for Mobile PCs
with 4 SO-DIMMs
Functional Description
The CY2310ANZ is a 3.3V buffer designed to distribute high
speed clocks in mobile PC applications. The part has 10 outputs,
eight of which are used to drive up to four SDRAM SO-DIMMs.
The remaining are used for external feedback to a PLL. The
device operates at 3.3V and outputs can run up to 100 MHz, thus
making it compatible with Pentium II^® processors. The
CY2310ANZ can be used in conjunction with the CY2281 or
similar clock synthesizer for a full Pentium II motherboard
solution.
The CY2310ANZ also includes a serial interface which can
enable or disable each output clock. During power up, all output
clocks are enabled. A separate Output Enable pin facilitates
testing on ATE.
Logic Block Diagram
BUF_IN
SDATA
SCLOCK
OE
Serial Interface
Decoding
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
SDRAM6
SDRAM7
SDRAM8
SDRAM9
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 38-07142 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised January 12, 2009
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