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Hi，

Can you tell me which setting is causing this?

In the general edit. I try slide via to other position. but the slide is wrong.

in the cm，i set pad-pad connect is all allowed，and i turn off via to pad spacing in the same net spacing. only turn on via to via spacing in the same net spacing，set to via to via spacing =0.

default the via is closer to the pad edge, I think the correct location is show in the pic2.

Hello,

I am new in formal verification and I have a concept question about how to verify an I2C Slave block.

I think the response should be valid for any serial interface which needs to receive information for several clocks before making an action.

The the protocol description is the following: 

I have a serial clock (SCL), Serial Data Input (SDI) and Serial Data Output (SDO), all are ports of the I2C Slave block.

The protocol looks like this:

The first byte which is received by the slave consists in 7bits of sensor address and the 8th bit is the command 0/1 Write/Read.

After the first 8 bits, the slave sends an ACK (SDO = 1 for 1 clock) if the sensor address is correct.

Lets consider only this case, where I want to verify that the slave responds with an ACK if the sensor address is correct.

The only solution I found so far was to use the internal buffer from the block which saves the received bits during 8 clocks. The signal is called shift_s.

I also needed to use internal chip state (state_s) and an internal counter (shift_count_s).

Instead of doing an direct check of the SDO(sdo_o) depending on SDI (sdi_d_i), I used the internal shift_s register.

My question is if my approach is the correct one or there is a possibility to write the verification at a blackbox level.

Below you have the 2 properties: first checks connection from SDI to internal buffer, the second checks the connection between internal buffer and output.

property prop_i2c_sdi_store;
  @(posedge sclk_n_i)
  $past(i2c_bl.state_s == `STATE_RECEIVE_I2C_ADDR)
    |-> i2c_bl.shift_s == byte'({ $past(i2c_bl.shift_s), $past(sdi_d_i)});
endproperty
APF_I2C_CHECK_SDI_STORE: assert property(prop_i2c_sdi_store);

property prop_i2c_sensor_addr(sens_addr_sel, sens_addr);
@(posedge sclk_n_i) (i2c_bl.state_s == `STATE_RECEIVE_I2C_ADDR) && (i2c_addr_i == sens_addr_sel) && (i2c_bl.shift_count_s == 7)
  ##1 (i2c_bl.shift_s inside {sens_addr, sens_addr+1}) |-> sdo_o;
endproperty
APF_I2C_CHECK_SENSOR_ADDR0: assert property(prop_i2c_sensor_addr(0, `I2C_SENSOR_ADDRESS_A0));
APF_I2C_CHECK_SENSOR_ADDR1: assert property(prop_i2c_sensor_addr(1, `I2C_SENSOR_ADDRESS_A1));
APF_I2C_CHECK_SENSOR_ADDR2: assert property(prop_i2c_sensor_addr(2, `I2C_SENSOR_ADDRESS_A2));
APF_I2C_CHECK_SENSOR_ADDR3: assert property(prop_i2c_sensor_addr(3, `I2C_SENSOR_ADDRESS_A3));

PS: i2c_addr_i is address selection for the slave (there are 4 configurable sensor addresses, but this is not important for the case).

Thank you!

Hello,


I would like to use the simulation software xrun/simvision that comes with XCELIUM. We are currently using classroom licenses and want to disable all ip addresses on the student pcs except the license server ip. We want to make sure that students cannot copy confidential data from the Cadence tools.


Problem:

When I launch the xrun simulation while all ip addresses are blocked, it starts but the performance is very slow. The GUI starts after 5 minutes and the simulation is ready after 10 minutes. The interesting thing is that when I enable all blocked ip addresses, everything works at a reasonable speed.

Terminal Output (execution without internet connection):

xrun -gui design.vhd

waiting for SimVision/Verisium Debug to connect...


Is there a way to run the simulation tools without an Internet connection? Or can you give me the ip addresses that are used by the simulation tools so that I can enable only those specific ips?


Regards,

Max

When analyzing multiple sessions simultaneously Verisium Manager crashed and reported below error messages:

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007efc52861b74, pid=14182, tid=18380
#
# JRE version: OpenJDK Runtime Environment Temurin-17.0.3+7 (17.0.3+7) (build 17.0.3+7)
# Java VM: OpenJDK 64-Bit Server VM Temurin-17.0.3+7 (17.0.3+7, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# C  [libucis.so+0x238b74]

......

For more details please refer to the attached log file "hs_err_pid21143.log".

Two approaches were tried to solve this problem but neither has worked.
Method.1:

Setting larger heap size of Java process by "-memlimit" options.For example "vmanager -memlimit 8G".

Method.2:

Enlarging stack memory size limit of the Coverage engine by setting "IMC_NATIVE_STACKSIZE" environment variable to a larger value. For example "setenv IMC_NATIVE_STACKSIZE 1024000"

According to "hs_err_pid*.log" it is almost certain that the memory overflow triggered Java's CrashOnOutOfMemoryError and caused Verisium Manager to crash. There are some arguments about memory management of Java like "Xms, Xmx, ThreadStackSize, Xss5048k etc" and maybe this problem can be fixed by setting these arguments during analysis. However, how exactly does Verisium Manager specify these arguments during analysis? I tried to set them by the form of setting environment variables before analysis but it didn't work in analysis and their values didn't change.

Is there something wrong with my operation or is there a better solution?

Thank you very much.

> reg [63:0] rMem [0:255] signal

it can be confirmed by rMem [0:255] in Simvision

Is it possible to generate a new rMem1 signal and rMem2 signal by splitting it into 32 bits width through right-click> Create on rMem?

Cyprus is ranked first in fDi’s Island Economies of the Future rankings, followed by the Dominican Republic and Sri Lanka. Cathy Mullan and Naomi Davies detail the results.

Starting at noon ET, Walmart+ members can score the Dyson V12 Detect Slim for just $399.99.

There are opportunities for Australian companies to build sustainable resilient infrastructure in the Pacific and contribute to the region’s economic prosperity.

Critical Conversations on Islam and Asia Critical Conversations on Islam and Asia

Check here each week to keep up with the latest from John MacArthur's pulpit at Grace Community Church.

Check here each week to keep up with the latest from John MacArthur's pulpit at Grace Community Church.

Check here each week to keep up with the latest from John MacArthur's pulpit at Grace Community Church.

MINNEAPOLIS, MINNESOTA — Huldah Momanyi Hiltsley made history November 5 by becoming the first Kenyan-born immigrant elected to the Minnesota House of Representatives. She describes her victory as a testament to resilience, determination and the realization of the American dream. Standing in the State Capitol for the first time on the morning of her orientation, Hiltsley told VOA she was overwhelmed with emotions and eager to start her journey as an elected official. “I am super excited,” Hiltsley said. “Today is orientation day for new legislators, and to be standing in this Capitol as an African immigrant woman is a tremendous honor. I’m just overexcited right now.” She said this milestone did not come easily. Her path to the Minnesota State Capitol was marked by struggles, including a fight against an immigration system that nearly led to her family’s deportation. She credits much of her success to the community support and the intervention of the late U.S. Senator Paul Wellstone, whose advocacy she said ultimately secured her family’s green cards and, later, citizenship. “Getting to this moment honestly is just a testament to the struggles that my family has gone through to be in this country,” she said. There has been a media frenzy surrounding Hiltsley’s victory and it has captured the attention of Kenyan media, with celebrations taking place in her hometown, Nyamemiso village, which is eight hours from Nairobi, Kenya's capital. Despite the attention, Hiltsley said she remains humble.  “I’m that little girl from that little village somewhere in the middle of Kenya, and now I’m in the spotlight of this media frenzy. And so, I’m still trying to really appreciate the magnitude of the moment,” she said. Hiltsley said she has a desire to inspire others, particularly young girls in Kenya and the United States. "It is still surreal,” she said, adding that “if I can make it to this point, I can be a role model to somebody to remind them that it is possible that our wildest dreams are possible. And that would be something that I would look back and say, wow, I’ve made a difference in somebody’s life.” Her legislative priorities Looking ahead, Hiltsley said she is committed to championing issues that matter to her constituents in Minnesota’s Legislative District 38A. Her priorities include community-centered public safety policies, affordable housing options, workers’ rights and support for small businesses — many of which are run by African immigrants. “The resources are out here,” she said, promising to empower her community. “It is my job to go back to my community and tell them, hey, there are resources here. This is how this system works. Let’s work together to mobilize and make sure that we are also taking a piece of the pie,” she said. As the first Kenyan American woman in Minnesota's Legislature, Hiltsley said she recognizes the weight and responsibility of her position. She described it as “an honor that I don’t take lightly.” “I don’t want to be the last,” she, adding that she hopes "this moment right here is a testimony that you can come to this country, work hard, take care of business, know your craft, stick to it, be consistent and get to where you want to.” Her message to those who have yet to succeed in their political campaigns is clear: Perseverance is key. “Be consistent. Keep going. There’s enough space in this Legislature for more people of color, especially immigrants, because that’s the voice that is missing,” Hiltsley said. Changing political scene Hiltsley shared her thoughts on the changing political landscape in Washington, particularly with the coming administration under President-elect Donald Trump. While acknowledging the challenges, she said she will stay focused on serving her constituents in Minnesota, regardless of politics. “We are here to serve the people, and it doesn’t matter if you are Democrat or Republican,” she said. “We are here as legislators to serve the people of Minnesota.” Hiltsley also shared her heartfelt message to fellow Kenyans who have been celebrating her historic achievement. “This is a historical moment, and I’m honored to be a Kenyan American,” she said. “Let’s continue celebrating this victory, but after that, we have work to do.” She said her eyes are set on not just her role in Minnesota, but also finding ways to collaborate with Kenya’s leaders to address issues facing the country, including corruption and a lack of strong leadership. “Kenya has unlimited potential,” she said. “It’s up to our leaders to do right by the people.” Hiltsley will officially take her seat in the Minnesota State House of Representatives and be sworn in on January 7. Representatives are elected to serve two-year terms. This story originated in VOA’s Swahili Service. Salem Solomon contributed to the report from Washington.

Yaounde, Cameroon — Workers have recovered 12 bodies following landslides that engulfed a road in the west of Cameroon, a regional official said Saturday, adding there is no hope of finding survivors.   State television CRTV reported the comments by the governor of Ouest region, Augustine Awa Fonka.   "In our opinion, there is no longer any possibility of finding survivors," he told the station.  Only 12 bodies had been recovered from the site of the disaster, the last of them on Saturday morning, he said.   Dozens more people are still missing, and the search for bodies is still continuing, he added.   Two landslides hit the Dschang cliff road Tuesday — the second as emergency workers were using heavy machinery to try to clear the road.   Vehicles hit included three coaches with around 20 seats each, five six-seater vehicles, and several motorbikes said Awa Fonka in an earlier statement.   Cameroon's roads are notoriously dangerous, with almost 3,000 deaths each year in accidents, or more than 10 deaths per 100,000 inhabitants, according to the latest figures from the World Health Organization, published in 2023.    In early September, a tractor-trailer carrying passengers plunged off a cliff road into a ravine near the town of Dschang, killing eight people and injuring 62 others, including eight children. 

Experts Weigh In on Pacific Islands Regional Rift at EWC Virtual Workshop Experts Weigh In on Pacific Islands Regional Rift at EWC Virtual Workshop

The naira on Tuesday continued to depreciate against the dollar at both official and parallel foreign exchange markets. According to data from FMDQ, the local currency fell to N1689.88 per dollar on Tuesday from N1681.42 exchanged on Monday, recording N8.42 depreciation. Similarly, at the black market, the naira lost N5 to close at N1740 on […]

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2024 Resilient Pacific Islands Leaders (RPIL) Fellowship