CGS702V [INTEL]

Clock Generator,;


型号：	CGS702V
厂家：	INTEL
描述：	Clock Generator,
文件：	总5页 (文件大小：441K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SUPPORT COMPONENTS

NATIONAL SEMICONDUCTOR

CGS253x Quad 1 to 4 Clock Drivers

■

Pin-to-Pin Skew of Less Than

350 ps

Part-to-Part Skew of Less Than

650 ps

Output Series Resistor Integrated

Into CGS2537

Supports TTL and CMOS Output

Clock Rates to 125 MHz

Accepts TTL and CMOS Inputs

Maximum Propagation Delays of 3.5

to 4.5 ns

■

Greater Than 125 MHz Maximum

Frequency

■

5V/3.3V Options

1X and 0.5X Output Capability

National Semiconductor’s Clock

Generation and Support (CGS*) family

offers you a complete portfolio of clock

generation and distribution timing solu-

tions. The newest family of high perfor-

mance clock drivers offers you the highest

performance and flexibility available in a

cost-effective device – High speed as

measured by maximum frequency, accura-

cy as measured by skew, and flexibility as

measured by supply voltages and output

configurations. National’s clock drivers

save time and effort by offering synchro-

nous signals that reduce timing errors and

system failures. These clock drivers also

integrate output series resistors that reduce

undershoot and simplify line termination

design. They further aid designers by

offering high fanout that reduces compo-

nent count and saves board real estate. In

addition, for today’s mixed voltage sys-

tems, the inputs are 5V tolerant when

using a 3.3V supply. National’s CGS253x

family of clock drivers (CGS2534V/

CGS2535V/CGS2536V/CGS2537V) is

optimized to drive large loads with sub-

3.5ns propagation delays, 1.5ns edge rates,

and 36mA drive.

located. In addition, one can access the

models at URL: http://www/vhdl.org/

pub/ibis (and click on ‘models’and

‘national’) or using a modem to dial up

(415) 335-0110. IBIS (I/O Buffer

Information Specification) is a fast and

accurate behavioral method of modeling

I/O buffers based on V/I curve data

derived from measurements or full circuit

simulation. IBIS uses a standardized soft-

ware parsable format to create the behav-

ioral information needed to model analog

characteristics of ICs and can be used by

almost any analog simulator/EDA tool in

the industry. IBIS is developed by the

IBIS Open Forum and most forum activi-

ties are handled through email discus-

sions using the reflector ibis@vhdl.org.

P R O C E S S O R S S U P P O RT E D :

80186, 80C186, 80C186XL/EA/EB/EC,

80L186EA/EB/EC, 80188,

80C188, 80C188XL/EA/EB/EC,

80L188EA/EB/EC, Intel386^™

CX/EX/SX/SXSA/DX, and Intel486^™

SX, IntelDX2^™, IntelDX4^™Processors

AVA I L A B I L I T Y:

Now

C O N TA C T:

National Semiconductor

Phone: (800) 272-9959

For international contacts see Appendix B.

IBIS models for the CGS253x, along with

all of National’s clock generators and dri-

vers, can be downloaded (via FTP) from

the Internet at vhdl.org, where all of the

semiconductor industry’s IBIS models are

200

SUPPORT COMPONENTS

NATIONAL SEMICONDUCTOR

CGS70x Low Skew Clock Generators

■

Up to 9 CMOS Clock Outputs

25-160 MHz Output Frequency

Range

■

Less Than 400 ps Pin-to-Pin Skew

Supports Clock Doubling and

Quadrupling

■

Internal Phase Locked Loop (PLL)

With VCO Operating Greater Than

160 MHz

■

CGS702 Has Reduced EMI

Sub-300 ps Long Term Jitter

30mA Drive

PLCC Packaging For Optimum

Skew Performance

National Semiconductor’s Clock

Generation and Support (CGS*) family

offers a complete portfolio of clock gener-

ation and distribution timing solutions for

all embedded Intel Architecture micro-

processors. National’s newest family of

high performance clock generators offers

high performance and flexibility in a cost-

effective device. The CGS700V/701V/

702V have on-chip PLLs that are used to

generate 25-160 MHz outputs from 25-

40 MHz inputs. The CGS701 has external

feedback for output edge placement

control.

P R O C E S S O R S S U P P O RT E D :

80186, 80C186, 80C186XL/EA/EB/EC,

80L186EA/EB/EC, 80188,

80C188, 80C188XL/EA/EB/EC,

80L188EA/EB/EC, Intel386^™

CX/EX/SX/SXSA/DX, and Intel486^™

SX, IntelDX2^™, IntelDX4^™Processors

the IBIS Open Forum and most forum

activities are handled through e-mail dis-

cussions using the reflector

ibis@vhdl.org.

IBIS models for the CGS70x, along with

all of National’s clock generators and dri-

vers, can be downloaded (via FTP) from

the Internet at vhdl.org, where all of the

semiconductor industry’s IBIS models are

located. In addition, one can access the

models at URL: http://www/vhdl.org/

pub/ibis (and click on ‘models’and

AVA I L A B I L I T Y:

Now

C O N TA C T:

National Semiconductor

Phone: (800) 272-9959

For international contacts see Appendix B.

‘national’) or using a modem to dial up

(415) 335-0110. IBIS (I/O Buffer

Information Specification) is a fast and

accurate behavioral method of modeling

I/O buffers based on V/I curve data

derived from measurements or full circuit

simulation. IBIS uses a standardized

software parsable format to create the

behavioral information needed to model

analog characteristics of ICs and can be

used by almost any analog simulator/EDA

tool in the industry. IBIS is developed by

201

SUPPORT COMPONENTS

NATIONAL SEMICONDUCTOR

DP843x Programmable DRAM Controllers

■

Supports Nibble, Page, and Static

Column DRAMs

■

33 MHz Operation

Dual Access Ports (DP8432 only)

Addresses Up to 64MB DRAM

Arrays

■

Supports Up to 4MB DRAMs

4 RAS and 4 CAS Drivers

The DP8430V/31V/32V DRAM con-

trollers provide a low cost, single chip

interface between DRAM and all embed-

ded Intel Architecture microprocessors.

The DP8430V/31V/32V generate all the

required access control signal timing for

DRAMs and an on-chip refresh request

clock is used to automatically refresh the

DRAM array. Refreshes and accesses are

arbitrated on chip. If necessary, a WAIT

or DTACK output inserts wait states into

system access cycles, including burst

mode accesses. RAS low time during

refreshes and RAS precharge time after

refreshes and back to back accesses are

guaranteed through the insertion of wait

states. Separate on-chip precharge coun-

ters for each RAS output can be used for

memory interleaving to avoid delayed

back to back accesses because of

DP8430/31/32 BLOCK DIAGRAM

P R O C E S S O R S S U P P O RT E D :

80186, 80C186, 80C186XL/EA/EB/EC,

80L186EA/EB/EC, 80188,

80C188, 80C188XL/EA/EB/EC,

80L188EA/EB/EC, Intel386^™

CX/EX/SX/SXSA/DX, and

Intel486^™SX, IntelDX2^™, IntelDX4^™

Processors

precharge. An additional feature of the

DP8432V is two access ports to simplify

dual accessing. Arbitration among these

ports and refresh is done on chip.

AVA I L A B I L I T Y:

Now

The DP8430V and DP8431V are available

in a 68-pin PLCC package while the

DP8432V is available in an 84-pin PLCC

package. All are available in 33 MHz

speeds.

C O N TA C T:

National Semiconductor

Phone: (800) 272-9959

For international contacts see Appendix B.

202

SUPPORT COMPONENTS

NATIONAL SEMICONDUCTOR

DP844x Programmable DRAM Controllers

■

25 MHz and 40 MHz Operation

Supports Up to 64-Bit Bus Widths

Addresses Up to 1/2 GB of Memory

Supports Up to 64MB DRAMs

Supports Fast Page, Nibble, and

Static Column DRAMs

■

Page Detection

Automatic CPU Burst Accesses

Automatic Internal Refresh

Burst and RAS-Before-CAS Refresh

National Semiconductor’s DP8440 and

DP8441 DRAM Controllers provide an

easy interface between DRAM arrays and

embedded Intel Architecture microproces-

sors. These DRAM Controllers generate

all necessary control and timing signals to

successfully interface and design dynamic

memory systems and support page and

burst accesses for fast page, static column,

and nibble DRAMs.

The DP8440 supports DRAMs as large as

16MB with a maximum addressable space

of 256MB while the DP8441 can support

64MB DRAMs with a maximum address-

able space of 1/2 GB. Both devices sup-

port microprocessor bus widths of up to

32-bits while the DP8441 supports 64-bit

bus widths as well.

P R O C E S S O R S S U P P O RT E D :

80186, 80C186,

80C186XL/EA/EB/EC,

80L186EA/EB/EC, 80188, 80C188,

80C188XL/EA/EB/EC,

80L188EA/EB/EC, Intel386^™

CX/EX/SX/SXSA/DX, and Intel486^™

SX,

Programmable features make the

DP8440/41 flexible enough to fit many

memory systems. These controllers

include page comparators, burst mode

support, and CAS-before-RAS refresh

features. Burst length is programmable on

both chips. They also include on-chip

Phase-Locked Loops (PLLs) which pro-

vide a high-precision delay line that gen-

erates sub-clock cycle delays to improve

system performance. Because the CMOS

circuits support high-capacitance drive

capabilities, system designers are not

required to add memory buffers.

IntelDX2^™, IntelDX4^™Processors

AVA I L A B I L I T Y:

Now

C O N TA C T:

National Semiconductor

Phone: (800) 272-9959

For international contacts see Appendix B.

Both devices are available in 25 MHz and

40 MHz versions and are packaged in a

100-pin PQFP package. Additionally, the

DP8440 is also available in a 84-pin

PLCC package (40 MHz version only).

203

SUPPORT COMPONENTS

VADEM

Intel Architecture and ISA Compatible Solutions

PCMCIA Host Adapters

H O S T S Y S T E M S S U P P O RT E D :

The VG660, is an industry standard LCD

■

VG365

N/A

VGA controller specifically designed to

support small flat panels with enhanced

features and VGA compatibility at the

same time. Using the highly integrated

VG660, designers can create an entire

VGA LCD subsystem in less than 3

square inches. The device supports a

variety of memory display types

including DRAMS, PSRAMS, and

SRAMS. Built-in power management

capabilities support sleep, suspend and

standby modes.

– Dual Socket PC Card Controller

VG465

– Single Socket PC Card Controller

VG468

– Single Socket PC Card Controller

VG469

– Dual Socket Mixed Voltage PC

Card Controller

P R O C E S S O R S S U P P O RT E D :

Intel386^™CX/EX/SX/SXSA/DX,

and Intel486^™SX, IntelDX2^™, and

IntelDX4 Processors

AVA I L A B I L I T Y:

Immediately available and in volume

production.

C O N TA C T:

VGA LCD/CRT Controller

■

Vadem

1960 Zanker Road

San Jose, CA 95112

Phone: (408) 467-2100

FAX: (408) 467-2199

For international contacts see Appendix B.

VG660

– 100 Pin Low Cost VGA LCD/CRT

Controller

Vadem’s PCMCIA Host Adapters, VG465,

VG365, VG468 and VG469 offer full

compatibility with Intel’s ExCA and

PCMCIA, and are Intel “B” step register

set and software compatible. Vadem’s

PCMCIA controllers offer OEMs an easy

and safe upgrade path to mixed voltage

systems and plug-and-play standards.

They also are designed to help end-users

easily use the standard. Applications

include desktop docking systems for

portables, conventional desktops, informa-

tion appliances, subnotebook computers

and portable peripherals.

204

CGS702V [INTEL]

相关型号：

CGS703U016V4C

CGS703U016V4C0ND

CGS703U016V4C0NH

CGS703U016V4C0NL

CGS703U016V4C0NN

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CGS703U016V4C1ND

CGS703U016V4C1NF

CGS703U016V4C1NG

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