Xilinx oddr primitive. dual data rate, of a clock.

Xilinx oddr primitive Other elements may be prinitives in some families and not others. Jan 2, 2025 · 目录 简介 1、 时钟组件 IBUFG IBUFGDS BUFG 简介 原语(Primitive)，是Xilinx针对其器件特征开发的一系列常用模块的名字，用户可以将其看成Xilinx公司为用户提供的库函数，是芯片中的基本元件，代表FPGA中实际拥有的硬件逻辑单元，如LUT，D触发器，RAM等，相当于软件中的机器语言。 This is done by setting the D1 input in the ODDR primitive to High and the D2 input to low. This primitive is typically used to drive a clock signal out of the FPGA. Mar 7, 2025 · AMD Versal™ devices have dedicated registers in the IOL to implement input DDR registers. 具体操作，也可以参考这篇文章： Xilinx 的高质量时钟输出 ODDR 原语. ODDR：Dedicated Dual Data Rate （DDR） Output Register Jun 6, 2023 · （54）xilinx双沿原语-iddr与oddr（第11天） 1 文章目录 1）文章目录 2）fpga初级课程介绍 3）fpga初级课程架构 4）xilinx双沿原语-iddr与oddr（第11天） 5）技术交流 6）参考资料 2 fpga初级课程介绍 1）fpga初级就业课程共100篇文章，目的是为了让想学fpga的小伙伴快速入门。 IDDR and ODDR primitives are used for 7 series chips, span can use IDDR2 and ODDR2. Jan 14, 2025 · 2、可以使用oddr的双沿输出功能来生成源同步接口的时钟信号，内部时钟到oddr时钟端口为时钟专用路径，而oddr输出端到fpga管脚（pad）的路径也是固定的，无法变化，保证输出时钟所走路径均为专用路径，从而保证时钟质量。 Dec 11, 2024 · 通过oddr把两路单端的数据合并到一路上输出 上下沿同时输出数据 上沿输出a路下沿输出b路 如果两路输入信号一路恒定为1，一路恒定为0，那么输出的信号实际上就是输入的时钟信号 ODDR Primitive: A dedicated output register to transmit dual data rate (DDR) signals from V Mar 5, 2021 · 文章浏览阅读1. Reset value is 0. The AD9361 data interface uses DDR biard sampling modes, as shown below, AD9361 and Xilinx FPGA communication requires its IDDR and ODDR primitives, deepening memory, summarizes IDDR and ODDR. MMCM/PLL), clock buffers (eg. <p></p><p></p> <p></p><p></p> But we have dedicated pads that connected to global clock net, why we can use them as inputs, and can&#39;t use UG572 (v1. Mar 26, 2018 · 在xilinx的fpga中，要实现高频时钟的输出，并保证时钟质量，最有效的方案是使用oddr来产生。例如，需要输出的时钟为clk，用clk来驱动oddr，让oddr在clk的上升沿输出0或1，在clk的下降沿输出1或0，从而产生一个时钟脉冲clkout，clkout的时钟频率和clk完全相同。 ----- Yes, and it's surprising that Xilinx hasn't done this in the previous FPGA series. dual data rate, of a clock. Best regards. This can all be done with the clocking primitives. 6</p><p>I instantiated 4 ODDRE1s, and the input D1 and D2 of each ODDRE1 were the same 16-bit increasing numbers. // 7 Oct 18, 2023 · Primitive: Dedicated Dual Data Rate (DDR) The ODDR interface with the FPGA fabric is not limited to opposite clock edges. com Chapter 1 Vivado Design Suite First Class Objects Navigating Content by Design Process Xilinx® documentation is organi zed around a set of standard design processes to help you find relevant content for your current development task. The ODDR also works with SelectIO™ features. 8k次，点赞3次，收藏27次。在SDR接口中，ODDR转发时钟（仍在时钟树内），输出端要直连到输出port，不可加逻辑，连接方式：输出时钟连接ODDR的C引脚，D1固定值1'b1, D2固定值1'b0，CE固定值1’b1，ODDR的输出Q连接到OBUF；输出DDR可以转发一个时钟副本到输出。 Hi, I'm having some problems with the ODDRE1 primitive : Device Model : ZU3EG The connection mode is ODDRE1+IOBUF+IDDRE1 IOSTANDARD POD12_DCI，INTERNAL_VREF 0. Reset // and Clock Enable. Mar 21, 2020 · In this post I will show you how Xilinx FPGA manage DDR signals, and how make a design that communicates with a DDR device. 0 [get_ports {spi_pin}] UG912 (v2022. Primitive: Dedicated Dual Data Rate (DDR) Output Register Reset -- and Clock This is accomplished by tying the D1 input of the ODDR primitive High, and the D2 input Low. It is suggested that you set this to the lowest setting tolerable for the design drive and timing requirements. 2 本节引言 “不积跬步，无以至千里；不积小流，无以成江海。. Produced by Aug 22, 2020 · I like to refer to these elements as ODDR modules, since they create a hardware output on both edges, i. Apr 25, 2024 · We use a serial DDR external RAM (Double-Data-Rate). This 2nd ODDR is clocked by CLK2 and each data stream is routed to one of the two data inputs on this ODDR. The ODDR interface with the FPGA fabric is not limited to opposite clock edges. your interest is about xilinx-fpga-oddr-odelay in total, with nothing Overview. 在ddr接口中oddr用于发送时钟和数据； 在sdr接口中仅用oddr转发时钟（仍在时钟树内），输出端要直连到输出port，不可加逻辑； 使用时钟专用输入管脚输出时钟=使用gpio输出时钟，必须使用oddr。 If we do post-synthesis or post-implementation simulation, then all the functionality of the design has been converted to instantiations of Xilinx primitive cells. このプリミティブは、FPGA からのクロック信号を駆動するために使用されます。これにより、タイミング問題を解消したり、CLB の使用率削減を図ることができます。ODDR は SelectIO™ 機能とも使用できます。詳細は、SelectIO Wizard の資料を参照してください。 Primitives to use as alternates to IDDR2 and ODDR2 in Xilinx Vivado 2018. I understand that the dual input clock ODDR is more flexible, but in the end the only reasonable use for the second clock is an inverted version of the first one. In the case of ODDR2, the ODDR has a subset of its functionality Mar 6, 2024 · 文章浏览阅读2. xilinx. Now that the clock is at the ODDR, we connect the D1 of the ODDR to 1 and the D2 to 0 - thus on the rising edge of the internal clock, the ODDR drives out a 1, and on the falling edge of the internal clock, the ODDR drives out a 0. The thing is that UltraScale has no ODDR/OSERDESE component, they are all high-level abstractions over BITSLICE primitives. 1) August 23, 2018, p. primitive iodelay can be used for most xilinx fpga,and there are timing constraints commands , OFFSET IN , OFFSET OUT for ucf , and set input delay ,set output delay for xdc,<p></p><p></p><p></p><p></p>when I use primitive iodelay ,the timing constraints commands need to be write or not ?<p></p><p></p><p></p><p></p>How can I combine the two method to adjust the relation between the data and I'm developing an application for XC7Z020-1CLG400C which is basically a bus splitter which takes in an 8bit input BT656 bus and fans it out into 4 different BT656 buses. The ODDR primitive supports the following modes of operation: • OPPOSITE_EDGE mode • SAME_EDGE mode . Mar 22, 2020 · 例如，在Xilinx的ISE工具中，可以通过edit->Language Templates菜单调出语法模板，在其中的VHDL或Verilog子菜单下，都可以看到一个Device Primitive Instantiation子项，里面列举出了所有我们在Xilinx FPGA平台上开发项目时可能会用到的原语例化方式。 In other words, the fabric requires 2 clocks. Xilinx recommends using this scheme to forward clocks from the FPGA logic to the output pins. Three modes of IDDR. Dec 6, 2024 · In Xilinx devices, IDDR and ODDR primitives are commonly used for DDR data transfer on I/O pins. Is there an equivalent IP core, primitive, or recommended method in Intel Quartus for implementing similar DDR functionality on Cyclone 10 GX? Oct 18, 2023 · Primitive: Dedicated Dual Data Rate (DDR) The ODDR interface with the FPGA fabric is not limited to opposite clock edges. The IDDR is always transformed into an IDDR_2CLK primitive so that it matches the Virtex fabric – Directly, through an SDR flip-flop or via the ODDR using both edges of clock Each OLOGIC block contains two ODDR – One for controlling the data to the output driver – One for controlling the 3-state enable – Both ODDR are driven by same clock and reset SAME_EDGE or OPPOSITE_EDGE only OLOGIC: Output SDR and DDR Logic Jan 13, 2019 · 文章浏览阅读1. 1 介绍 该设计元素是专用的输入寄存器，旨在将外部双数据速率（DDR）信号接收到Xilinx FPGA中。 IDDR 可用的模式可以在捕获数据的时间 和 时钟沿或在相同的时钟沿向 FPGA 架构显示数据。 Jun 23, 2020 · 2、ODDR原语的复位需要约12个clock，第一次输入的数据可能会有问题（亲测），但亲测是如此。 3、ODDR的输出必须直接连到输出pad上，不可以再引进逻辑内部。因此会出现do_oddr的输出无法连入OLOGIC中. In this case, where possible the tools will create the functionality requested. 表1 oddr端口信号. 1w次，点赞16次，收藏85次。本文详细介绍了xilinx fpga中ologic和oddr原语的使用，包括ologic的功能、组成和模式，以及oddr的opposite_edge和same_edge模式的工作原理，强调了在ddr模式下如何节省资源并提高性能。 Your VHDL might be logically equivalent to the primitives. Now all of these cells (at least the ones that have state) will use the GSR, and hence the whole design will stay in reset during the GSR period. 1 Xilinx MIG IP核app_wdf_rdy信号一直为低 1. OPPOSITE_EDGE Mode The traditional input DDR solution or OPPOSITE_EDGE mode is implemented by a single input in the ILOGIC module. CSS Error Apr 7, 2018 · Your question appears too broad, doesn't show research effort nor appears to present a programming question. Among them, D is the double -rate data of the input, that is, D will occur at the rising and down edge of the clock. Dec 2, 2023 · 原语(Primitive)是Xilinx针对其器件特征开发的一系列常用模块的名称，涵盖了FPGA开发过程中的常用领域，方便用户直接调用FPGA的底层组件。 Mar 24, 2024 · 1 IDDR Primitive: Input Dual Data-Rate Register 1. The design works correctly during behavioral simulation and also on FPGA after configuration. Also, if you pay attention to xapp1324 (v1. com Chapter1 Overview Introduction to UltraScale Architecture The Xilinx® UltraScale™ architecture is a revolutionary approach to creating programmable devices capable of addressing the massive I/O and memory bandwidth requirements of Nov 13, 2024 · Attribute Type Allowed Values Default Description; DRIVE: INTEGER: 2, 4, 6, 8, 12, 16, 24: 12: Specifies the output current drive strength of the I/O. Jun 16, 2021 · Primitive: Dedicated Dual Data Rate (DDR) Output Register. 1. 从图中很明显可以看出，Forwarded Clock其实也是一种Generated Clock，约束如下： create_generated_clock -name FCLK1 -source [get_pins ODDR1/C] -divide_by 1 [get_ports SSO1_CLK] Jan 15, 2025 · 2、oddr的使用 下图是oddr原语框图，与iddr一样不支持同时复位和置位。oddr端口信号如下表所示，表2描述了oddr原语的可用参数。 oddr原语的输入输出信号如下表所示： oddr原语除了输入输出信号端口外，还有几个参数端口需要配置，其使用说明如下： The ODDR/IDDR primitives *must* be used to infer IDDR/ODDR blocks. Xilinx recommends using this scheme to forward the FPGA logic clock to the output pins. • Primitives: Xilinx components that are native to the architecture you are targeting. Feed it with clk and ~clk for C1 and C2 respectively, with a <b>0</b> and <b>1</b> respectively for D0 and D1 of the ODDR2 primitive. You may even want a slower clock to save power. 3k次，点赞8次，收藏41次。由于项目需要使用LVDS通信接口，从xilinx官方selectio资源入手，选择关键原语进行学习和功能仿真验证1 IDDRE1功能仿真调用Xilinx代码模板进行简单的功能仿真：OPPOSITE_EDGEDDR采样，i_clk上升沿采样和下降沿采样，上升沿采样的数据在o_data_q1立即输出；下降沿采样的 In the IDDR/ODDR application, you must specify the set_output_delay for the rising edged portion and one for the falling edged portion. Mar 22, 2020 · 例如，在Xilinx的ISE工具中，可以通过edit->Language Templates菜单调出语法模板，在其中的VHDL或Verilog子菜单下，都可以看到一个Device Primitive Instantiation子项，里面列举出了所有我们在Xilinx FPGA平台上开发项目时可能会用到的原语例化方式。 Loading. I would hope that Xilinx got their model correct so that both edges change in the same delta cycle! ie. 2 design to xilinx vivado. A 2nd ODDR is used to forward the two streams of DDR data coming from the FPGA fabric. For single-data-rate (SDR) output from the FPGA, we again use one ODDR to forward the clock, CLK1. oddr位于ologic中，可以把单沿传输的数据转换为双沿传输的数据，在讲解oddr功能之前，需要先了解ologic的结构及功能。1、ologic ologic块位于iob的内侧，fpga内部信号想要输出到管脚，都必须经过ologic。 Feb 26, 2014 · The ODDR primitive is a dedicated output registers to transmit dual data rate (DDR) signals from Virtex-4 FPGAs. ODDR is available with modes that allow data to be presented from the FPGA fabric at the same clock edge. Jan 5, 2021 · （54）xilinx双沿原语-iddr与oddr（第11天） 1 文章目录 1）文章目录 2）fpga初级课程介绍 3）fpga初级课程架构 4）xilinx双沿原语-iddr与oddr（第11天） 5）技术交流 6）参考资料 2 fpga初级课程介绍 1）fpga初级就业课程共100篇文章，目的是为了让想学fpga的小伙伴快速入门。 Dec 4, 2023 · xilinx原语详解及仿真——IDDR lingo IDDR的主要功能就是将输入的双沿信号转换为单沿信号输出给FPGA内部逻辑进行使用 ，IDDR位于通1中的ILOGICE部分，在讲解IDDR使用前，需要了解ILOGICE的结构及功能。 May 23, 2019 · Xilinx FPGA创建了先进的硅模块（ASMBL）架构，以实现FPGA具有针对不同应用程序领域优化的各种功能组合的平台。 通过这一创新，Xilinx提供了更多的设备选择，使客户能够为其特定设计选择具有正确的功能和功能组合的FPGA。 Nov 29, 2024 · oddr端口信号如表1所示，表2描述了oddr原语的可用参数。 图3 oddr原语框图. This is > accomplished by tying the D1 input of the > ODDR primitive High, and the D2 input Low. During simulation, the output of ODDR is delayed by several clock cycles. We were seeing 15-25% packet loss. XILINX 7series/ultrascale IDDR/ODDR use difference; IDDR and ODDR use; IDDR/ODDR of FPGA primitives [XINLIX original] IBUFDS differential turning single -end, Obufds single -end turf division of xilinx primitives; Xilinx 7 series ODDR, IDDR primitives and ultrascale series ODDRE1, IDDRE1 primitives; XINLIX primitive IBUFDS, OBUFDS Usage and Feb 11, 2022 · 2 oddr使用与仿真. 8 "The output delays for the ODDRE1 and OSERDESE3 are different. Xilinx specific variant of ddrOut implemented using the Xilinx ODDR primitive in SAME_EDGE mode. Unimacros from previous generation Xilinx FPGA architectures are not supported in the Ultrascale architecture and have been replaced by Xilinx Parameterized Macros. using the available primitives of the FPGA in use. hardware. They only apply to HDL simulations, standing in place of unknown "real" delays. In the xps_tft ipcore for spartan6 ODDR is used. But I can't find if iCE40 Series support special DDR primitives like ODDR in Xilinx. This feature allows designers to avoid additional timing complexities and CLB usage. Nov 7, 2024 · 但此次在编写hdmi接口驱动的时候，需要将单沿采样信号变为双沿采样的信号输出，还需要把单端信号转换为差分信号输出。实现这些功能可以调用selectio的ip，但是这个ip包含iddr、oddr、idelaye2等很多功能，单独调用个别功能还是比较麻烦。 A 2nd ODDR is used to forward the two streams of DDR data coming from the FPGA fabric. How then does one instantiate the double-data-rate register for output enable which 'match' the ODDR (primitive) registers? There is no primitive for the ODDR 'T' output registers which match the (otherwise corresponding) ODDR 'D' output registers. The Xilinx® UltraScale™ architecture is a revolutionary approach to creating programmable devices capable of addressing the massive I/O and memory bandwidth requirements of next-generation applications while efficiently routing and processing the data brought on As shown in the figure, the input and output of IDDR primitives include D, C, C, S, R, Q1, Q2. 4k次，点赞12次，收藏30次。本文详细介绍了xilinxfpga中的时钟组件（如bufg、bufh、bufr和bufio）以及io端口组件（iddr、oddr和idelay），包括它们的使用场景和功能特性，重点讲解了iddr和oddr的双沿采样模式。 Aug 15, 2010 · Now I have a problem in post route simulation. Could anyone have experience? If iCE40UltraPlus does not support DDR primitives, the only way is to use a 2x clock frequency to operate. // 7 Jul 22, 2022 · The ODDR primitive is a dedicated output registers to transmit dual data rate (DDR) signals from Virtex-4 FPGAs. At first the data only trailed the clock by about 1 ns, which violates the hold time. 2w次，点赞7次，收藏119次。概述ad9361数据接口采用了ddr双沿采样模式，如下所示，ad9361与xilinx fpga通信需要用到其iddr和oddr原语，为加深记忆，将iddr及oddr使用总结如下。 I do it the way the Xilinx manual says. See full list on controlpaths. Using the ODDR primitive didn't change the timing analysis much, but it moved the data to about 5 ns after the clock with 0% packet loss. Set and Reset cannot be set at the same time. 1) June 8, 2022 www. The core generator, on the other hand, only (it seems to me) uses the ODDR2. If you are building a design for an FPGA, then I highly recommend that you use such a module. 上述的信号和参数都比较简单，与前面iddr原语相似，不做过多解释。oddr只有两种工作模式，相比iddr会少一种，下文对两种模式进行讲解。 I heard that for a spartan-6 there are no dedicated clock outputs and it is recommanded to use an ODDR2 as clock output. ×Sorry to interrupt. This document covers the following design process: Mar 27, 2024 · （54）xilinx双沿原语-iddr与oddr（第11天） 1 文章目录 1）文章目录 2）fpga初级课程介绍 3）fpga初级课程架构 4）xilinx双沿原语-iddr与oddr（第11天） 5）技术交流 6）参考资料 2 fpga初级课程介绍 1）fpga初级就业课程共100篇文章，目的是为了让想学fpga的小伙伴快速入门。 Dec 22, 2023 · 文章浏览阅读1. Table 2-21 lists the ODDR port signals. This mode allows designers to present both data inputs to the ODDR primitive on the rising-edge of the ODDR clock, saving CLB and clock resources, and increasing performance. e. The signal is output of a ODDR primitive. However, from the viewpoint of Vivado timing analysis, the VHDL and primitives are significantly different. \$\endgroup\$ Feb 6, 2024 · As you correctly mentioned, the ODDR is often used to send the forwarded clock out of the FPGA – as shown in the schematic below. Mar 13, 2021 · 该设计元素是专用的输入寄存器，旨在将外部双数据速率（DDR）信号接收到Xilinx FPGA中。IDDR可用的模式可以在捕获数据的时间和时钟沿或在相同的时钟沿向FPGA架构显示数据。此功能使您可以避免其他时序复杂性和资源使用情况。 1)OPPOSITE_EDGE模式-以传统的DDR方法恢复数据。给定分别在引脚D和C上的 Oct 22, 2021 · The ODDR interface with the FPGA fabric is not limited to opposite clock edges. Unlike previous generations of Xilinx FPGAs, ODDR primitive’s interface with the FPGA fabric is not limited to opposite edges. 文章浏览阅读6. Output DDR primitive (ODDR) Figure 2-20 shows the ODDR primitive structure diagram. they do something like: not_rx_clk <= not (rx_clk_int); rx_clk <= rx_clk_int; to match the deltas. I sincerely get help from here. As recommended by Xilinx, ODDR is used for clock forwarding. The IDDRE1 primitive supports the following modes of operation: OPPOSITE_EDGE Traditional input DDR solution. No processing of signals is done. com The Xilinx® UltraScale™ architecture is a revolutionary approach to creating programmable devices capable of addressing the massive I/O and memory bandwidth requirements of next-generation applications while efficiently routing and processing the data brought on As shown in the figure, the input and output of IDDR primitives include D, C, C, S, R, Q1, Q2. FPGA-Xilinx primitive call ODDR Record background: Recently, because we want to realize the function of GMIItoRGMII, we need to call the ODDR primitive. If we take a look to the UG471 of Xilinx, we can read that DDR input, and output are a configuration of OLOGIC, in clase of ODDR primitive, and ILOGIC, in case of IDDR primitive. 表2 oddr原语的参数. I read in the spartan 6 guide that there is the ODDR2 primitive whereas I didn't read anything about ODDR, which I find in the Virtex guide instead. This feature is used by instantiating the IDDRE1 primitive. What's the problem? Nov 26, 2012 · Delta-delays are not at issue here. Produced by MUXF6_L Primitive:2-to-1Look-UpTableMultiplexerwithLocal Output MUXF7 Primitive:2-to-1Look-UpTableMultiplexerwithGeneral Output MUXF7_D Primitive:2-to-1Look-UpTableMultiplexerwithDual Output MUXF7_L Primitive: 2-to-1look-uptableMultiplexerwithLocal Output MUXF8 Primitive:2-to-1Look-UpTableMultiplexerwithGeneral Output Sep 18, 2019 · 1. "primitives" which means that the FPGA family implements them directly in. This tool is integrated into the Mojo IDE to make it easy to add cores to your project. IDDR 和 ODDR 使用的一些限制 Feb 6, 2022 · This actually didn't work until I forwarded the clock using the ODDR primitive. Jun 16, 2021 · Primitive: Dedicated Dual Data Rate (DDR) Output Register. Example of ODDR: set_output_delay -clock [get_clocks clk_pin_p] -max 1. 7) October 2, 2013, there are templates for VHDL and Verilog as well as simulation models). BUFG, BUFGMUX), and the clock-pin (C) of components. 7) April 9, 2018 www. > > For more information refer UG471 > > -Shreyas > > ----- Feb 21, 2022 · Xilinx example design also take out ODDR output to pin and comment that as "clock for client MAC" but logically speaking after PCS, MAC module should be in same FPGA but without stable clock for GMII data achieving throughput is not possible. But doesn't work correctly in post route simulation! I found out that the ddr_reset_n signal is not asserted in post route simulation. 1）使用方法. Loading. This design element is a dedicated output register for use in transmitting double data rate (DDR) signals from FPGA devices. Chapter 2: Functional Categories Design Element Description DCM_ADV Primitive:AdvancedDigitalClockManagerCircuit DCM_BASE Primitive:BaseDigitalClockManagerCircuit DCM Nov 13, 2024 · This design element is a dedicated input register designed to receive external double data rate (DDR) signals into Xilinx® FPGAs. When working with clocks in Xilinx FPGAs, you should connect clocks only to CMTs (eg. Sadly, I recently found myself in a position where I couldn’t use a pre-built ODDR on a project. These primitives are pretty complicated, and although you can manually instantiate them, it is a lot easier to use Xilinx’s CoreGen tool. 1 本节目录 1）本节目录； 2）本节引言； 3）FPGA简介； 4）Xilinx MIG IP核app_wdf_rdy信号一直为低； 5）结束语。 1. The IDDR primitive allows the user to instantiate an IDDR with only one clock, and then the tools automatically connect both clocks for the user. Xilinx recommends using this scheme > to forward clocks from the FPGA logic to the output pins. The IDDR is available with modes that present the data to the FPGA fabric at the time and clock edge they are captured, or on the same clock edge. IDDRとODDRはXilinx FPGAで提供される2つの内蔵部品で、データの両立上がりエッジのレジスタ機能を実装できます。 IDDRは入力データの両立上がりエッジのレジスタに利用され、一方ODDRは出力データの両立上がりエッジのレジスタに利用されます。 Nov 8, 2023 · This is accomplished by tying the D1 input of the ODDR primitive High, and the D2 input Low. 实际使用中，如果需要引入其他逻辑，可以考虑使用ibuf This connection doesn't have any of the "not so nice" characteristics described above. Spartan 3E has IDDR2 and ODDR primitives that can be instantiated (Spartan-3E Libraries Guide for HDL Designs UG617 (v14. It can be configured to present date from the FPGA fabric at the same clock edge. 2 Hi everyone, We are currently trying to port our old xilinx ISE 13. The SAME_EDGE mode is the same as for the Virtex-6 architecture. ndd gockkkv ilixpq yop ajkalmv ddyxl ibkebp zxsu arq oalej srgya kmlct ykji jffjp pnxz