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CY24242OXC

更新时间： 2024-11-21 06:51:35

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
10页	220K
描述
Laser Printer System Frequency Synthesizer

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CY24242OXC 数据手册

CY24242

Laser Printer System Frequency Synthesizer

Table 1. Pin Selectable Frequency^[1]

Features

CPU(0:3),

• Maximized EMI suppression using Cypress’s Spread

Spectrum technology

FS1 FS0

SDRAM(0:3)

133.3 MHz

100 MHz

USBCLK

48 MHz

• Reduces measured EMI by as much as 10 dB

• Four skew-controlled copies of CPU output

• Four skew-controlled copies of SDRAM output

• One copy of 14.31818-MHz Reference output

• One copy of 48-MHz USB clock (not spread)

• Selectable SSFTG modulation width

66.6 MHz

50 MHz

Table 2. Spread Characteristics.

CPU(0:3),

SDRAM(0:3)

• Available in 28-pin SSOP (209 mil)

SSON#

SS%1

SS%0

–0.5%

–1.0%

–2.5%

–3.75%

0 (off)\

0 (off)

Key Specifications

Supply Voltage:

VDDCORE: ........................................................... 3.3V±10%

VDDC: ............................................... 3.3V±10% or 2.5V±5%

VDDS: ............................................... 3.3V±10% or 2.5V±5%

VDDU: ............................................... 3.3V±10% or 2.5V±5%

CPU Clock Cycle to Cycle Jitter: ................................250ps

USBCLK Long term Jitter:....................................... ± 500 ps

CPU0:3 Clock Skew: ..................................................250ps

CPU, SDRAM Output on Resistance: .............................15Ω

Logic inputs have 250K-ohm pull-up resistors

Pin Configuration^{[2, 3]}

Block Diagram

REF

USBCLKEN

GND

VDDCORE

REF

XTAL

OSC

GND

USBCLK

VDDU

PLL Ref Freq

CPU0

SDRAM3

SDRAM2

VDDS

CPU1

VDDC

SSON#

CPU2

CPU3

GND

SDRAM1

SDRAM0

GND

SS%1

SS%0

SS%1*

SSON#^

FS1*

VDDCORE

*SDEN

*SS%0

CPU0:3

FS0*

SDRAM0:3

PLL 1

FS0

FS1

SDEN

USBCLKEN

PLL 2

USBCLK

Notes:

1. All clock output loaded with maximum lump capacitance test load specified in AC Electrical Characteristics section.

2. Signals marked with [*] have internal pull-up resistors

3. Signal marked with[^] has internal pull-down resistors.

Cypress Semiconductor Corporation

Document #: 38-07268 Rev. *B

•

3901 North First Street

•

San Jose, CA 95134

•

408-943-2600

Revised January 19, 2005

12 3 4 5 6 7...10

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与CY24242OXC相关器件

型号	品牌	获取价格	描述	数据表
CY24242OXCT	CYPRESS	获取价格	Laser Printer System Frequency Synthesizer
CY24242PVC	CYPRESS	获取价格	Laser Printer System Frequency Synthesizer
CY24242PVCT	CYPRESS	获取价格	Laser Printer System Frequency Synthesizer
CY24246PVC	ROCHESTER	获取价格	100 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48, 0.300 INCH, MO-118AA, SSOP-48
CY24246PVC	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO48, 0.300 INCH, MO-118AA, SSOP-48
CY24246PVCT	CYPRESS	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO48, 0.300 INCH, MO-118AA, SSOP-48
CY24260ZC	CYPRESS	获取价格	Clock Generator, 48MHz, CMOS, PDSO20, 4.40 MM, TSSOP-20
CY24260ZCT	CYPRESS	获取价格	Clock Generator, 48MHz, CMOS, PDSO20, 4.40 MM, TSSOP-20
CY24271	CYPRESS	获取价格	Rambus㈢ XDR⑩ Clock Generator
CY24271_11	CYPRESS	获取价格	Rambus XDR? Clock Generator

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