Datasheet > 微控制器和处理器 > 时钟发生器> CY2283PVC-1T

CY2283PVC-1T

更新时间： 2024-11-25 13:07:11

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		晶体驱动器时钟发生器微控制器和处理器外围集成电路光电二极管电脑 PC
页数	文件大小	规格书
12页	221K
描述
Processor Specific Clock Generator, 100MHz, CMOS, PDSO48, SSOP-48

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CY2283PVC-1T 技术参数

生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	SSOP,	针数：	48
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.8
JESD-30 代码：	R-PDSO-G48	长度：	15.875 mm
端子数量：	48	最高工作温度：	70 °C
最低工作温度：		最大输出时钟频率：	100 MHz
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
主时钟/晶体标称频率：	14.318 MHz	认证状态：	Not Qualified
座面最大高度：	2.794 mm	最大供电电压：	3.465 V
最小供电电压：	3.135 V	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL	端子形式：	GULL WING
端子节距：	0.635 mm	端子位置：	DUAL
宽度：	7.5 mm	uPs/uCs/外围集成电路类型：	CLOCK GENERATOR, PROCESSOR SPECIFIC
Base Number Matches：	1

CY2283PVC-1T 数据手册

PRELIMINARY

CY2283

Pentium®/II, K6, 6x86 100-MHz Clock Synthesizer/Driver for

Desktop PCs with ALI or VIA Chipsets, AGP and 3 DIMMs

SDRAM outputs in place of the CY2283 and can be placed in

Features

close proximity to the SDRAM modules.

• Mixed 2.5V and 3.3V operation

The CY2283 possesses power-down, CPU stop, and PCI stop

pins for power management control. These inputs are multi-

plexed with SDRAM clock outputs, and are selected when the

MODE pin is driven LOW. Additionally, the signals are synchro-

nized on-chip, and ensure glitch-free transitions on the out-

puts. When the CPU_STOP input is asserted, the CPU clock

outputs are driven LOW. When the PCI_STOP input is assert-

ed, the PCI clock outputs (except the free-running PCI clock)

are driven LOW. When the PWR_DWN pin is asserted, the

reference oscillator and PLLs are shut down, and all outputs

are driven LOW.

• Complete clock solution for Pentium® /II, Cyrix 6x86,

and AMD K6 processor-based motherboards

— Four CPU clocks at 2.5V or 3.3V

[1]

— Twelve 3.3V SDRAM clocks

— Five synchronous PCI clocks, one free-running

— One 3.3V 48 MHz USB clock

— One 3.3V Ref. clock at 14.318 MHz

— Two AGP clocks at 3.3V

• Support for ALI (-1 option) and VIA (-2 option)

• I C™ Serial Configuration Interface

• Full EMI control with factory-EPROM programmable

output drive and slew rate

• Factory-EPROM programmable CPU clock frequencies

for custom configurations

The CY2283 outputs are designed for low EMI emissions.

Controlled rise and fall times, unique output driver circuits and

factory-EPROM programmable output drive and slew-rate en-

able optimal configurations for EMI control.

• Power-down, CPU stop, and PCI stop pins

• Available in space-saving 48-pin SSOP package

CY2283 Selector Guide

Functional Description

The CY2283 is a clock Synthesizer/Driver for Pentium, Cyrix,

or AMD processor-based PCs using the ALI Aladdin V (-1 op-

tion) or VIA MVP3 (-2 option) chipset.

Clock Outputs

CPU (66.6, 75, 83.3, 100MHz)

SDRAM

-1 (ALI V) -2 (VIA MVP3)

[1]

[2]

The CY2283 outputs four CPU clocks at 2.5V or 3.3V. There

are five PCI clocks, running at 30 or 33.3 MHz. One of the PCI

clocks is free-running. Additionally, the part outputs twelve

3.3V SDRAM clocks , one 3.3V USB clock at 48 MHz, and

one 3.3V reference clock at 14.318 MHz. Finally, the part out-

puts two AGP clocks running at 66.66 MHz or 60 MHz.

PCI (30, 33.3 MHz)

USB (48MHz)

[1]

AGP (66.6, 60MHz)

Ref. (14.318 MHz)

CPU-PCI delay

2.5−5.5 ns

The CY2283 has the flexibility to work as either a one-chip or

as part of a two-chip clocking solution. In 100-MHz board de-

signs based on the ALI Aladdin V chipset, it is recommended

that the CY2283 be used with an external SDRAM buffer so-

lution such as the CY2318NZ or CY2314NZ. In this configura-

tion the SDRAM outputs on the CY2283 must be either turned

AGP clock

In phase

with PCI

In phase

with CPU

Notes:

1. SDRAM clocks available up to 83.3MHz. In 100-MHz designs based on the

ALI V chipset, an external CY231xNZ buffer should be used.

2. One free-running PCI clock

off using I C or left floating. The CY231xNZ family provides the

Pin Configuration (48 SSOP)

Logic Block Diagram

REF0 (14.318 MHz)

XTALIN

14.318

DDQ3

MHz

REF0

USBCLK

SEL1

OSC.

XTALOUT

STOP

CPU

PLL

CPUCLK [0-3]

V_DDCPU

LOGIC

XTALIN

XTALOUT

CPUCLK0

CPUCLK1

DDQ3

PCICLK_F

PCICLK0

DDCPU

SEL0

SEL1

SDRAM5/PWR_DWN

SDRAM [0-4],[8-11]

EPROM

CPUCLK2

CPUCLK3

PCICLK1

PCICLK2

PCICLK3

SDRAM6/CPU_STOP

MODE

SDRAM0

SDRAM1

Delay (-2 option)

AGP0

DDQ3

SDRAM7/PCI_STOP

AGP

SYS PLL

DDQ3

SDRAM2

SDRAM3

/1, /1.25, /1.5

Delay (-1 option)

AGP1

SDRAM11

SDRAM10

SDRAM4

SDRAM5/PWR_DWN

STOP

LOGIC

PCI [0-3]

PCICLK_F

USBCLK

DDQ3

SDRAM9

SDRAM6/CPU_STOP

SDRAM7/PCI_STOP

SDRAM8

SERIAL

SCLK

INTERFACE

CONTROL

LOGIC

SDATA

SCLK

SEL0

SDATA

MODE

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

October 12, 1998

12 3 4 5 6 7...12

中文翻译

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与CY2283PVC-1T相关器件

型号	品牌	获取价格	描述	数据表
CY2283PVC-2	CYPRESS	获取价格	PentiumII, K6, 6x86 100-MHz Clock Synthesizer/Driver for Desktop PCs with ALI or VIA Chips
CY2284SC-1	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO28, 0.300 INCH, PLASTIC, SOIC-28
CY2285	CYPRESS	获取价格	100-MHz Pentium㈢II Clock Synthesizer/Driver w
CY2285PVC-1	CYPRESS	获取价格	100-MHz Pentium㈢II Clock Synthesizer/Driver w
CY2285PVC-1T	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO28, 0.210 INCH, SSOP-28
CY2285PVC-2	CYPRESS	获取价格	100-MHz Pentium㈢II Clock Synthesizer/Driver w
CY2285PVC-2T	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO28, 0.210 INCH, SSOP-28
CY2285PVC-3	CYPRESS	获取价格	100-MHz Pentium㈢II Clock Synthesizer/Driver w
CY2286PVC-1	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, MOS, PDSO56, SSOP-56
CY2286PVC-2	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, MOS, PDSO56, SSOP-56

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