For Immediate Release: August 13, 2024 Contact: Samuel Barry, Policy Advisor (302) 382-0651, Samuel.Barry@delaware.gov The tracker is a publicly accessible tool for Delawareans to learn about how Prescription Opioid Abatement and Remediation Grants have been distributed to date. Dover, DE – Delaware Auditor of Accounts Lydia E. York published an official Prescription Opioid Settlement Tracker […]

The Dual Employment Performance Audit for fiscal years 2020-2022 is the most comprehensive such report issued by a Delaware State Auditor. For Immediate Release: September 17, 2024 Contact: Samuel Barry, Policy Advisor (302) 382-0651, Samuel.Barry@delaware.gov Click here to view, search, and download Delaware Audit Reports online.   Dover, DE – Delaware Auditor of Accounts Lydia […]

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DEPARTMENT OF EDUCATION: Professional Standards Board

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Read the in depth Review of AKG K245 Studio Headphones Audio Video. Know detailed info about AKG K245 Studio Headphones configuration, design and performance quality along with pros & cons, Digit rating, verdict based on user opinions/feedback.

Read the in depth Review of Boult Audio Airbass Livebuds Audio Video. Know detailed info about Boult Audio Airbass Livebuds configuration, design and performance quality along with pros & cons, Digit rating, verdict based on user opinions/feedback.

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[SAPS] - A former company Director (57) is expected to appear in the Thabamoopo Magistrates Court in Lebowakgomo on 11 November 2024 for allegedly defrauding a pensioner an amount of R378 000.00 in the name of business.

[Daily Maverick] Water and Sanitation Minister Pemmy Majodina held an urgent meeting on Sunday with Gauteng Premier Panyaza Lesufi and Johannesburg Mayor Dada Morero to address severe water shortages affecting Johannesburg communities.

DDR5 is the latest generation of PCDDR memory that is used in a wide range of application like data centers, Laptops and personal computers, autonomous driving systems, servers, cloud computing, and gaming are now increasingly being used for AI applications with advances in memory bandwidth and density to allow DDR5 DIMMs (Dual Inline Memory Modules) to support densities higher then 256 GB per DIMM card. The highest speed DDR5 SDRAM devices can support data rates of up to 8800 MTps.

DDR5 SO-DIMMs and UDIMMs

One of the most recognized uses of PCDDR is with client devices like laptops and personal computers. These client devices mostly use two types of DDR5 DIMMs called SO-DIMM (Small Outline Dual Inline Memory Module) and UDIMM (Unbuffered Dual Inline Memory Module).

These types of DIMMs have no signal regeneration or buffering (which, for example, the Registering Clock Driver or the RCD does for clocks/command/control signals for a registered DIMMs). A typical 2-Rank UDIMM with x8 DDR5 SDRAM components has 8 or 10 components per rank depending on the system ECC (Error Correction Code) memory being part of the DIMM.

Why DDR5 Clock Buffer and CUDIMM?

Clocks are one of the most important signals for synchronous devices, and DDR5 SDRAMs are no exception. The host is responsible for the fanout to all the DRAM input ports, such as clocks for UDIMMs. Driving of all these DRAM clocks can put quite a bit of load on the host output drivers, thus affecting the signal quality, which can result in unexpected memory errors. This issue gets amplified when operating at the higher clock and data rates where the clock signals transition from one logic value to the next over a very short time. To solve these signal integrity issues with DRAM clocks, JEDEC has come up with a new type of DDR5 DIMM component that is called DDR5 clock buffer. Clock buffers can be used for both DDR5 SO-DIMMs and DDR5 UDIMMs. DDR5 UDIMMs that include a clock buffer component as part of the DIMM card are called DDR5 CUDIMMs (Clock Buffered UDIMMs).

DDR5 Clock Buffer Overview

DDR5 Clock Buffer is a simple logic device that takes in two sets of input clock pins and drives two sets of clock pins as output per channel. The clock buffer device can operate in three types of clock modes: -

• PLL bypass mode: In this mode, the clock buffer just passes on the input clocks to output without any kind of signal buffering. The PLL bypass mode enabled CUDIMM devices behave like traditional UDIMMs without any buffering of the clocks. This is why it’s also referred to as legacy mode. Recommended CUDIMM operating speeds in PLL bypass mode are typically limited to 3000 MHz.

• Single PLL mode: In the single PLL Mode, the clock buffer device will use a Phase Lock Loop (PLL) for the regeneration of the incoming host clock to create a better-quality clock that is sent to the DRAMs. However, since there is only one PLL that is used in this mode, both sub channel output clocks will be driven based on only one set of input clocks with the other set of input clocks remaining unused.

• Dual PLL mode: In this mode, the clock buffer will use two PLLs to independently generate each sub channel output clock based on each set of incoming host clocks. The second set of PLL can be turned on or off on the fly if needed to save power.

Beyond the clock modes, clock buffers provide additional flexibility to the system designers with register-controlled additional signal delays, optional output clock enable/disable per bit feature, drive strength and termination choices, etc. All DDR5 clock buffer device control word registers are accessible via DDR5 DIMM sideband.

Cadence VIPs offers a compressive memory subsystem solution that includes memory models for DDR5 SDRAM, DDR5 RCD, DDR5 DB, DDR5 clock buffer, all types of DDR5 DIMMs, including the DDR5 CUDIMMs, DFI Memory Controller/PHY VIPs, and a system VIP compliant to JEDEC specifications defined for each of those devices along with latest DFI Specification.

More information on Cadence DDR5 DIMM VIP is available at the Cadence VIP Memory Models website.

Hey, is it suitable to post here? I wanted a small yet robust amp for practicing while I travel. I wanted something that would fit in my pocket yet still be loud enough to hear.

Presented here is a amplifier based upon the LM386 Audio Amplifier.

There is a standard circuit in the data sheet that is an excellent place to start.

Materials needed:
1 - HM359 project box
1 - 668-1237 speaker
1 - BS6I battery conn
1 - CP1-3515 stereo jack
1 - SC1316 stereo jack
2 - 450-1742 knob
1 - 679-1856 switch
1- 3mm LED
1 - 10 ohm 1/4W resistor
1 - 10uF ceramic cap
1 - .05 uF ceramic cap
1 - 420 uF electrolytic cap
1 - 8 ohm resistor
2 - 51AADB24 10K pot
1 - HM1252 circuit board
1 - LM386N-4 amplifier

Wire and Solder
Step 1: Prep the enclosure

Careful planning is required the first time you free build a circuit. The circuit board has solder pads but not traces. You will have to use thin wire to make the connections for the circuit to work.

Begin by laying out the components on the circuit board that will need to pass through the enclosure. This enclosure has a removable top panel which will be used for the volume, gain and 1/4 inch stereo jack.

Space is limited to check for fit before drilling.

All drilling of the plastic should be done with a step drill bit. This will make the cleanest holes without breaking the plastic.

Lay out the pots a few spaces back but still in line with the desired position. mark the center of each pot shaft then drill with a step drill tot he tightest fitting hole size. Make a center mark between the pot holes then drill for the stereo jack

On the inside of the top cover position and mark where the speaker will go.

Make a template on grid paper the same size as the speaker.

Tape the template to the inside of the cover as shown then use a step bit to drill holes on the center of every square in the grid. This will form the speaker grille. clean up the holes.

Step 2: place the major components

Solder the pots to the circuit board as shown. then place the stereo jack(note in order to get the final fit I had to trim and modify the stereo jack housing a little)

Next, position and solder the switch on the circuit board and mark a space on the top cover that will need to be cut for the switch opening. Use a small file to cut the opening.

Use a sharp knife to bevel the edges of the switch hole to allow for easier operation.

Drill a hole in the side of the upper case for the headphone jack and fasten it in place. ( I had to recess the hole a bit for the retaining nut to grab)

Step 3: Build the circuit

The speaker is held in place by using 2 small brackets that come with the serial cable connector hood. ( I had a bunch around that would never be used)

Refer the the circuit shown from the datasheet and the datasheet for the LM386. The basic circuit only has the volume control while the datasheet shows how to add a gain control across pins 1 and 8 of the amplifier.

The speaker is wired in series with the headphone jack. The headphone jack has internal switches that shut the speaker off when the phones are plugged in.

I chose to use a chip socket for the amplifier which make prototyping easier since you do not have to worry about solder heating as much.

Carefully lay the circuit out on the board and begin wiring components together. I added a second pot and cap in series between pins 1 and 8 of the amp to be able to manually set the gain in addition to volume.

Check you connections with a multimeter before adding the amplifier.

I chose to add a LED indicator for power. This was done by using one side of switch contacts from the battery. The LED is in series with a 220 ohm resistor.

Assemble the case and insert the battery.

Step 4: Final notes

If the speaker is noisy while the headphones work normally, try reversing the speaker connections. If it does not correct the issue, connect a 8 ohm resistor across the speaker contacts.

You may have to place an insulating layer between the speaker and the place where the stereo jack comes through to prevent contact. This will be noted by a loud buzz.

You may have to add some foam in the battery compartment to stop the battery from banging around.

For reference, I've also read an article about amplifiers: http://www.apogeeweb.net/article/60.html

Thanks for reading!
​

Read on to know about the Operating Point Parameters Summary window that gives you a one-stop view of the categorized and tabulated details on all operating point parameters in your design. This window improves your review cycle with its many benefits.(read more)

Designers have long recognized the need to analyze the reliability of ICs. Two commonly used approaches for performing reliability analysis include calculating the change in device degradation and relying on safe operating checks in circuit simulators. 

With the advent of the ever-increasing use of ICs in mission-critical applications, the need for reliable reliability analysis has become of paramount importance. Over the years, you have been using reliability analysis in Virtuoso ADE Assembler and Virtuoso ADE Explorer to measure and review aging effects, such as device characteristic degradations, model parameter changes, self-heating effects, and so on.

Reliability analysis can be performed using two modes: Spectre native and RelXpert. The reliability analysis analyzes the effect of time on circuit performance drift and predicts the reliability of designs in terms of performance. In ADE Assembler, you can run the reliability simulation for fresh test (when time is zero), stress test (to generate degradation data), and aged test (at specific intervals, such as one year, three years, or 10 years). In the stress test, extreme environmental conditions are used to stress devices before aging analysis.

The following figure shows the reliability simulation flow.

The Reliability Options form has the following four tabs: 

• Basic: Enables you to specify analysis type, aging options, start and stop time of reliability simulation, and options related to device masking, degradation ratio, and lifetime calculation. 

• Modeling: Enables you to choose the modeling type you want to use during reliability simulation. 

• Degradation: Enables you to specify the options to print device and subcircuit degradation information into a .bt0 file. 

• Output: Enables you to specify the degradation reports to be generated and methods to filter degradation results in the reports.

While the Basic and the Output tabs are used by design engineers, the Modeling and the Degradation tabs are primarily used by model developers.

Reviewing degradation reports in text or XML formats can be a tiresome exercise because degradation data can be large and can contain a large number of instances due to advanced technology nodes and post-layout simulations. For you to work effectively and interactively with these reports, the new reliability report is based on the SQLite database, which adds the benefit of improved performance and capabilities of sorting and filtering reliability data using SQLite operators.

As they say, watching this in action might help you more than reading about it, so please take a look at our Training Bytes video channel, which offers many helpful videos on how to run Reliability Analysis in Virtuoso Studio.

All the related videos are linked together in a channel so that you can easily access and watch as many as you like.

Reliability Analysis in Virtuoso Studio

Want to Learn More?

For lab instructions and a downloadable design, enroll for the online training courses of your interest on

Reliability Analysis in Virtuoso Studio vIC23.1 (Online)

 Training is also available as "Blended" or "live" class.

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About Knowledge Booster Training Bytes

Knowledge Booster Training Bytes is an online journal that relays information about Cadence Training videos, online courses, and upcoming webinars that are available in the Learning section of the Cadence Learning and Support portal. This blog category brings you direct links to these videos, courses, and other related material on a regular basis.

Niyati Singh

On behalf of the Cadence Training team

Virtuoso Studio IC23.1 ISR7 production release is now available for download.(read more)

This blog describes an efficient way to name the histories saved by the simulation runs in Virtuoso ADE Assembler.(read more)

Virtuoso Studio IC23.1 ISR8 production release is now available for download.(read more)

This blog explores how Virtuoso Studio Net Tracer can help you perform a design review.

We’ll use the net connectivity option, which allows the user to get a clean highlighted net. You can use the Net Tracer tool to highlight the nets. You can find the Net Tracer command under the connectivity pulldown menu in the layout window.

Trace manager and the ability to display different islands on the same net with other colors, you can identify and connect the unconnected islands as you wish.

The Net Tracer utility traces the nets in the physical view (layout). The trace is a highlighted net, which is a non-selectable object. The Net Tracer utility is available from Virtuoso Layout Suite XL onwards. You can use this utility based on your specific needs and preferences.

For a better understanding of the Net Tracer feature, let’s see one scenario between the circuit designer and layout engineer for a layout design review.

Circuit designer: Can we go through the routed input nets “inm” and “inp”?

Layout engineer: From the below layout view where they are highlighted using the XL connectivity, today I will use Net Tracer utility for the design review.

Circuit designer: I have never heard of this feature. Let's see how it works.

Layout engineer: Sure, now we turn on the Net Tracer toolbar using the below option.

You see the Net Tracer options form here:

As you can see on my screen, I have opened the layout view and engaged the Net Tracer utility.

Net Tracer allows shapes to be traced on a net in two tracing modes, namely, physical and logical, where shapes on the same net are physically or logically connected.

Physical tracing gathers all the shapes physically connected on the same net.

Logical tracing gathers all the shapes assigned to the same net. It highlights the net as in the source design (schematic). It will highlight shapes on the same net, even if they are isolated shapes that are not physically connected.

For this scenario, let us use physical tracing for input nets “inm” and “inp."

Highlighted nets are shown below:

Net “inm”                    Net “inp”                   Nets “inm” and “inp” 

Net Tracer has features like physical and logical tracing, preview, step-by-step mode, ease of tracing a net on a shape out of multiple underlying shapes, and so on.

Let us explore logical tracing for output nets “outm” and “outp”:

Here, you can see how to enable true color and halo before enabling logical tracing to identify the metal route. After enabling the true color halo, enable the logical trace.

Here, I am opening the trace manager to search “outm” and “outp” and click trace. That will trace the particular nets as shown.

Net Tracer has a preview feature, which is helpful in terms of the number of previewed objects. This preview capability hints at how the trace would appear when you create it. This useful feature in Virtuoso Studio highlights both completed and incomplete nets, helping the user better understand the status of the highlighted nets.

Circuit designer: Thanks for the design review. You have done good work. Net Tracer clearly shows both types of tracing, and it was even easy for the circuit designer to understand.

Layout engineer: Let me share the link to the Net Tracer RAK, where other layout engineers can explore many more amazing features of the Net Tracer.

Do You Have Access to the Cadence Support Portal?

If not, follow the steps below to create your account.

• On the Cadence Support portal, select Register Now and provide the requested information on the Registration page.
• You will need an email address and host ID to sign up.
• If you need help with registration, contact support@cadence.com.

To stay up to date with the latest news and information about Cadence training and webinars, subscribe to the Cadence Training emails.

If you have questions about courses, schedules, online, public, or live onsite training, reach out to us at Cadence Training.

For any questions, general feedback, or future blog topic suggestions, please leave a comment.

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Cadence Training Services now offers digital badges for this training course. These badges indicate proficiency in a certain technology or skill and give you a way to validate your expertise to managers and potential employers. You can highlight your expertise by adding these digital badges to your email signature or any social media platform, such as Facebook or LinkedIn. To become Cadence Certified, you can find additional information here.

Related Resources

About Knowledge Booster Training Bytes

Knowledge Booster Training Bytes is an online journal that relays information about Cadence Training videos, online courses, and upcoming webinars that are available in the Learning section of the Cadence Learning and Support portal. This blog category brings you direct links to these videos, courses, and other related material on a regular basis.

Sandhya.

On behalf of the Cadence Training team

Virtuoso Studio IC23.1 ISR9 production release is now available for download.(read more)

Virtuoso Studio IC23.1 ISR10 production release is now available for download.(read more)

American entertainment studio Bento Box Entertainment has partnered with Australia’s Princess Pictures to form a new animation studio

Saudi Arabia’s Vision 2030 identifies mining as a key component of the Kingdom’s industry strategy. This will open major opportunities for Australian companies in the mining, equipment, technology and services (METS) sector.

As of Nov. 11, the Beats Studio Pro headphones are $100 off at Target from their $349.99 list price to $249.99.

Get early Black Friday deals on headphones at Walmart. Score AirPods for under $100.

DUBAI, United Arab Emirates — A soldier for Yemen's exiled government opened fire on Saudi troops as they exercised in eastern Yemen, killing two of them and wounding another in a rare insider attack during the kingdom's nearly decadelong war there, officials said Saturday. The assault in eastern Hadramawt province comes as a yearslong cease-fire between Saudi Arabia and Yemen's Houthi rebels largely has held despite the militants' ongoing attacks against shipping in the Red Sea corridor. While the Houthis did not claim the attack, at least one Houthi official praised it as being "the beginning and an indication of a harsh future awaiting the invaders." Meanwhile, U.S. warplanes carried out new strikes targeting Houthi positions that lasted into early Sunday morning, the American military said. The strikes come after the militants likely shot down yet-another American reconnaissance drone over the country. The attack on the Saudi troops took place Friday night in Seiyun, a city some 500 kilometers east of Sanaa. As troops worked out at a Saudi-led base there, the soldier opened fire, killing an officer and a noncommissioned officer, the state-run Saudi Press Agency said, citing a military statement. "The Joint Forces Command underscores that this 'Lone Wolf' cowardly attack does not represent the honorable members of the Yemeni Ministry of Defense," the statement added. The dead and the other wounded Saudi solider have been brought back to the kingdom, it added. Aidarous al-Zubaidi, the leader of Yemen's successionist Southern Transitional Council, identified the soldier who carried out the attack as belonging to the First Military Region, which is based out of Seiyun. Police in the area published pictures of the soldier, saying there was a 30-million-Yemeni-rial reward for information leading to the soldier's arrest. That's worth around $15,000 on the black market. Authorities offered no motive for the attack. Al-Qaida in the Arabian Peninsula, the militant group's Yemen branch, long has operated around Hadramawt. However, the group did not immediately claim the attack. A recent United Nations expert report has said that the al-Qaida group and the Houthis have begun to "coordinate operations directly with each other." The Houthis meanwhile did not claim the attack either. However, Houthi official Hamid Rizq praised the attack in a message on the social platform X, claiming it came from "the feeling of oppression" over Saudi troops being stationed in the area. "The heroic operation is the beginning and an indication of a harsh future awaiting the invaders," Rizq wrote. Yemen has been mired in a decadelong war since the Houthis swept into Sanaa from their northern strongholds in September 2014. A Saudi-led coalition entered the war on behalf of Yemen's exiled government in 2015. The war further internationalized, with Iran backing the Houthis with weapons and support that cemented the conflict into a yearslong stalemate. The war has killed more than 150,000 people, including fighters and civilians, and created one of the world's worst humanitarian disasters, killing tens of thousands more. A cease-fire that expired in October 2022 largely has held in the time since, however, even as the Houthis have seized on the Israel-Hamas war in the Gaza Strip and Israel's invasion of Lebanon. On Saturday night, Houthi-run media reported U.S. airstrikes targeting areas around Sanaa. The airstrikes continued into Sunday morning and also included sites in Amran province just outside of the capital, the Houthis said. The rebels offered no immediate damage assessment from the strikes. The U.S. military later told The Associated Press on Sunday it conducted airstrikes "on numerous Iran-backed Houthi weapons storage facilities within Houthi-controlled areas of Yemen." It described the sites as housing advanced conventional weapons used to target military and civilian ships in the Red Sea corridor but offered no other immediate details. The U.S. military has targeted radar stations, military bases and drone and missile launch sites since beginning its ongoing airstrike campaign against the Houthis in January. 

Dubai, United Arab Emirates — The chief of staff of Saudi Arabia's armed forces, Fayyad al-Ruwaili, visited Tehran on Sunday to meet with his Iranian counterpart and discuss defense ties, state media reported the Iranian Armed Forces General Staff as saying.  The visit follows the election of Donald Trump, who will take office for a second term as U.S. president in January, and who has promised to bring peace to the Middle East.  During his first term, Trump initiated normalizations between Arab states and Iran's regional arch-enemy Israel, known as the Abraham Accords.  Saudi Arabia has not established ties with Israel, but Trump's son-in-law Jared Kushner has discussed the possibility with Saudi Arabia’s Crown Prince Mohammed bin Salman multiple times over the last years, a source familiar with the discussions told Reuters on the condition of anonymity.  Iran's state media said al-Ruwaili headed a high-level Saudi military delegation in Tehran and met Armed Forces Chief of Staff Major General Mohammad Bagheri.  Iranian state media said the two military officials discussed various issues, including "the development of defense diplomacy and the expansion of bilateral cooperation."  State media added that Bagheri held a phone call with Saudi Arabia's Defense Minister Prince Khalid bin Salman Al Saud last year to discuss regional developments and improve defense cooperation between the two countries.  Separately, Iranian President Masoud Pezeshkian spoke with Saudi Crown Prince Mohammed bin Salman on the phone, Iranian media said.  Pezeshkian told the crown prince he would not be able to attend a summit of the Organization of Islamic Cooperation (OIC) in Riyadh due to his busy schedule and would be dispatching the Iranian first vice president as a representative, the Mehr news agency said.  Tehran and Riyadh agreed in March 2023, via Chinese intermediation, to reestablish relations after seven years of hostility that had threatened stability and security in the Gulf and helped to fuel conflicts in the Middle East from Yemen to Syria. 

Asia Studies Visiting Fellowship Application

Summer Institute 2024: Infusing Korean Studies in American Undergraduate Higher Education

In its battle for regional dominance and ongoing rivalry with Shi'ite Iran, Sunni Saudi Arabia is currently involved in a number of strategic battles throughout the Middle East.

Saudi Arabia has succeeded in maintaining its market share throughout the oil bust by continuing to ratchet up production.

Iran's state media said al-Ruwaili headed a high-level Saudi military delegation in Tehran and met Armed Forces Chief of Staff Major General Mohammad Bagheri.

The meeting comes while the region prepares for incoming US President Donald Trump to take office.

Saudi Arabia's crown prince condemned Israel's "genocide" in Gaza at a Riyadh summit, stressing support for Palestine and pausing US-led normalization talks after recent violent escalations.

to wire a home audio system

An analysis of thousands of cognitive tests carried out by chimpanzees finds that the number of spectators influenced their performance in different ways depending on the difficulty of the task

Claudia de Rham has spent much of her life dedicated to unravelling the true nature of gravity, thinking deeply about gravitons, the hypothetical carrier of this enigmatic force

An analysis of thousands of cognitive tests carried out by chimpanzees finds that the number of spectators influenced their performance in different ways depending on the difficulty of the task

Seven major datasets used to train audio-generating AI models are three times more likely to use the words "man" or "men" than "woman" or "women", raising fears of bias

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Background

Quality of life is impaired in patients with sarcoidosis. The King's Sarcoidosis Questionnaire (KSQ) is a brief questionnaire assessing health-related quality of life in patients with sarcoidosis, comprising subdomains of General Health Status (GHS), Lung, Medication, Skin and Eyes. The aim of this study was to enhance the validation of the KSQ, incorporating longitudinal validation and known-groups validity in a cohort with mild sarcoidosis.