cy2314anz Cypress Semiconductor Corporation., cy2314anz Datasheet

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cy2314anz

Manufacturer Part Number
cy2314anz
Description
14 Output, 3.3v Sdram Buffer For Desktop Pcs With 3 Dimms
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

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0NZCY2310
14ANZ
Pentium is a registered trademark of Intel Corporation.
Features
Cypress Semiconductor Corporation
Document #: 38-07143 Rev. *A
• One input to 14 output buffer/driver
• Supports up to three SDRAM DIMMs
• Two additional outputs for feedback
• Serial interface for output control
• Low skew outputs
• Up to 100-MHz operation
• Multiple V
• Dedicated OE pin for testing
• Low EMI outputs
• 28-pin SOIC (300-mil) package
• 3.3V operation
Block Diagram
SCLOCK
BUF_IN
SDATA
OE
DD
and V
SS
pins for noise reduction
Serial Interface
Decoding
3901 North First Street
14 Output, 3.3V SDRAM Buffer for
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
SDRAM6
SDRAM7
SDRAM8
SDRAM9
SDRAM10
SDRAM11
SDRAM12
SDRAM13
Functional Description
The CY2314ANZ is a 3.3V buffer designed to distribute
high-speed clocks in desktop PC applications. The part has 14
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 100 MHz, thus making it compatible with Pentium
cessors. The CY2314ANZ can be used in conjunction with the
CY2280, CY2281, CY2282 or similar clock synthesizer for a
complete Pentium II motherboard solution.
The CY2314ANZ also includes a serial interface which can
enable or disable each output clock. On power-up, all output
clocks are enabled. A separate Output Enable pin facilitates
testing on ATE.
Desktop PCs with 3 DIMMs
San Jose
SDRAM12
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
BUF_IN
SDATA
V
DDIIC
V
V
V
V
Pin Configuration
DD
DD
SS
SS
CA 95134
28-pin SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Top View
Revised December 14, 2002
CY2314ANZ
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
SDRAM11
SDRAM10
V
V
SDRAM9
SDRAM8
V
OE
SDRAM7
SDRAM6
SDRAM13
V
SCLK
408-943-2600
DD
SS
DD
SS
SSIIC
®
II pro-
[+] Feedback

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cy2314anz Summary of contents

Page 1

... 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 100 MHz, thus making it compatible with Pentium cessors. The CY2314ANZ can be used in conjunction with the CY2280, CY2281, CY2282 or similar clock synthesizer for a complete Pentium II motherboard solution. ...

Page 2

... The Serial bits will be read by the clock driver in the following order: Byte 0 - Bits Byte 1 - Bits Byte N - Bits • Reserved and unused bits should be programmed to “0” • Serial interface address for the CY2314ANZ is ...

Page 3

... – Unloaded outputs, 100 MHz Loaded outputs, 100 MHz Unloaded outputs, 66.67 MHz Loaded outputs, 66.67 MHz BUF_IN All other inputs CY2314ANZ Min. Max. Unit 3.135 3.465 0. Min. Max. Unit ...

Page 4

... Test Conditions Measured at 1.5V Measured between 0.4V and 2.4V Measured between 2.4V and 0.4V All outputs equally loaded [3] Input edge greater than 1 V/ns [3] Input edge greater than 1 V/ns [3] Input edge greater than 1 V/ns [3] Input edge greater than 1 V/ns 1.5V 3.3V 0. CY2314ANZ Min. Typ. Max. Unit 100 MHz 45.0 50.0 55.0 % 0.9 1.5 4.0 V/ns 0.9 1.5 4.0 V/ns – ...

Page 5

... Switching Waveforms (continued) SDRAM Buffer LH and HL Propagation Delay INPUT OUTPUT t 6 SDRAM Buffer Enable and Disable Times OE Three-State Active OUTPUTS t 8 Test Circuit 0.1 F Document #: 38-07143 Rev OUTPUTS C LOAD GND CY2314ANZ CLK out Page [+] Feedback ...

Page 6

... CY2314ANZSC-1 S28 Document #: 38-07143 Rev. *A BUF_IN SDATA SDRAM ( 0-13) SCLK V 3. 0.1uF SS CY2314ANZ: 28-PIN SOIC CY2314 28 PIN SOIC from the clock generator V DD Package Type 28-Pin SOIC Commercial CY2314ANZ R s SDRAM ( 0-13 DECOUP LING CAPACITOR OPTIONAL EMI-R EDUCING CAP ACI TORS ...

Page 7

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 28-Lead (300-Mil) Molded SOIC S21 CY2314ANZ 51-85026-A Page ...

Page 8

... Document Title: CY2314ANZ 14 Output, 3.3V SDRAM Buffer for Desktop PCs with 3 DIMMs Document Number: 38-07143 Issue REV. ECN NO. Date Change ** 110252 11/18/01 *A 121830 12/14/02 Document #: 38-07143 Rev. *A Orig. of Description of Change DSG Change from Spec number: 38-00687 to 38-07143 RBI Power up requirements added to Operating Conditions Information ...

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