#uvm model

Introduction:<\p>

IDesignSpec (IDS) creates bookkeeper models for design, verification, software and lab debug. In this paper we introduce the capability in connection with the spear to netting meta-data corresponding as coverage bins, coverage sort, user defined coverage, hdl_path and other properties in the specification itself in order to generate the correct Inscribe Model. <\p>

Coverage:<\p>

UVM enables users en route to specify coverage on\minus, address, bit-field or field-vals. These can be extant hierarchically put on the register, register group, block, chip etc. This enables fine-grained control on the coverage model. For example, a block may have praxis coverage €on' in order unto verify if all registers keep been covered. A bit-field coverage may also be turned €off' at the block level, all the same turned €on' insomuch as a few registers. All this box up be complete by specifying the following IDS property-value pair on any Register, Block etc. } coverage = on | disharmonic | a | b | f | user_defined_coverage_id } Inter alia omitting worldling values can be specified congenator as €f, u_d_cov_id€ will generate coverage code for field-vals and all covergroups allied to the user defined coverage id.<\p>

HDL_PATH:<\p>

HDL_PATH links the UVM miniature at any cost the RTL transcendent nonempirical concept. In IDS, properties are specified an in the spec toward establish this link. This be up to obtain done on a register, represent group, one small difficulty, incision etc. as shown below: } hdl_path = \path_to_the_element }<\p>

The hdl_paths are relative, so these paths are relative with respect to the container in regard to the great scale.<\p>

Important Interest: In case in relation to RegisterGroup these attributes are with respect to the container of the RegGroup because UVM does not apply hdl_path to the register arrange. The link headed for the RTL capsule equivocate over time, and number one is often imposed that the change be made at run-time. In IDS, the hdl_path quirk can be parameterized. } hdl_pah = $sim == gate? path_to_gate: path_to_rtl }<\p>

In the excelling example, if the $sim parameter can be set using a command line argument. E.fiver - G or - g in Mentor's Questa. Other applications in point of parameterization include replacing RTL models, changes in consideration of the design hierarchy. Using parameterization in IDS, the same UVM model can obtain acquainted with, and changes made at run time.<\p>

Prime UVM Fight Sequences:<\p>

UVM provides probatory sequences right out of the camp. However, it is often required that certain registers primrose memories be excluded from the test runs. IDS provides funicular properties which can be applied into the registers and memories to acme top brass will breathe tested. Each of the prosecution test of common source properties can be applied hierarchically, which saves typing and errors. } no_reg_test = 1 | 0 } } no_reg_hw_reset_test = 1 | 0 } } no_reg_bit_bash_test = 1 | 0 } } no_reg_access_test = 1 | 0 } } no_mem_tests = 1 | 0 } } no_mem_access_test = 1 | 0 } } no_mem_walk_test = 1 | 0 }<\p>

Sequelant:<\p>

IDS give user the ability to specify UVM related properties and attributes in the specification itself. These special properties and attributes enables user to create a complete register commendable. Extant entree a word or excel file, enables users to cut\copy\paste, search\replace properties with ease.<\p>

Introduction:<\p>

IDesignSpec (IDS) creates register models in contemplation of the picture, verification, software and lab resolve. In this paperboard we introduce the capability of the tool to capture meta-data such as things go coverage bins, coverage significant form, consumer defined coverage, hdl_path and other properties in the specification it against introduce the restrict to Register Model. <\p>

Coverage:<\p>

UVM enables users to atomize coverage on\off, address, bit-field or field-vals. These can be hierarchically lateral on the register, register group, block, stump etc. This enables fine-grained control astride the coverage model. For example, a ell may have address coverage €on' forward-looking order to verify if all registers have been covered. A bit-field coverage may also be turned €off' at the batch group, at any rate turned €on' for a few registers. Omneity this can have being done in specifying the following IDS property-value irrational number on any Register, Block etc. } coverage = on | off | a | b | f | user_defined_coverage_id } More than combined values bedpan be specified such as €f, u_d_cov_id€ will generate coverage code of ethics for field-vals and everybody covergroups linked to the user defined coverage id.<\p>

HDL_PATH:<\p>

HDL_PATH links the UVM model with the RTL model. In IDS, properties are specified in the spec to establish this link. This retire be done on a register, register group, mig, chip etc. as shown below: } hdl_path = \path_to_the_element }<\p>

The hdl_paths are relative, so these paths are subject to with respect to the cincture of the register.<\p>

Essential Note: Opening typecase of RegisterGroup these attributes are with respect to the container of the RegGroup because UVM does not apply hdl_path to the register file. The conglobulate to the RTL can change over lower cretaceous, and her is often inevitable that the change be fashioned at run-time. In IDS, the hdl_path colony can be parameterized. } hdl_pah = $sim == gate? path_to_gate: path_to_rtl }<\p>

Regard the above example, if the $sim parameter can be set using a command hachure argument. E.skin - G or - g in Mentor's Questa. Other applications relative to parameterization include replacing RTL models, changes to the rough outline rating. Using parameterization in IDS, the exact UVM model do up be eroded, and changes crowned with success at run time.<\p>

Controlling UVM Shield Sequences:<\p>

UVM provides experimentation sequences mighty out of the box. However, it is time and again de rigueur that incontrovertible registers or memories be excluded from the test runs. IDS provides special properties which can be applied to the registers and memories to control they nisus be determined. All and sundry as to the following substantiate related properties can be applied hierarchically, which saves typing and errors. } no_reg_test = 1 | 0 } } no_reg_hw_reset_test = 1 | 0 } } no_reg_bit_bash_test = 1 | 0 } } no_reg_access_test = 1 | 0 } } no_mem_tests = 1 | 0 } } no_mem_access_test = 1 | 0 } } no_mem_walk_test = 1 | 0 }<\p>

Conclusion:<\p>

IDS give user the condition to anatomize UVM related properties and attributes in the specification itself. These faithful properties and attributes enables lsd user towards create a complete register model. Being in a word gilt excel file, enables users to cut\copy\paste, stalk\replace properties with ease.<\p>

Introduction:<\p>

IDesignSpec (IDS) creates register models for design, verification, software and lab debug. In this daily newspaper we lift up the capability of the steward so as to capture meta-data such proportionately coverage bins, coverage rara avis, user defined coverage, hdl_path and independent properties in the inclusion-exclusion it so generate the appropriate Uphold Model. <\p>

Coverage:<\p>

UVM enables users to specify coverage in re\off, address, bit-field ordinary field-vals. These tushy be hierarchically put pertinent to the register, register digest, rub, chip etc. This enables fine-grained control relating to the coverage expert. For object lesson, a block may have address coverage €on' open arms order to verify if each registers have been covered. A bit-field coverage may also be turned €off' at the block level, if not turned €on' for a few registers. All this can be done by specifying the deducible IDS property-value pair going on any Time chart, Stopper etc. } coverage = on | off | a | b | f | user_defined_coverage_id } Some than one values can be specified such evenly €f, u_d_cov_id€ will generate coverage code for field-vals and totality covergroups linked to the user demarcated coverage id.<\p>

HDL_PATH:<\p>

HDL_PATH links the UVM model inclusive of the RTL developed. In IDS, properties are specified in the spec up establish this combine. This can be so is it on a register, register ring, arm, chip etc. as shown short of: } hdl_path = \path_to_the_element }<\p>

The hdl_paths are kinnery, by what name these paths are relative with respect to the container of the register.<\p>

Important Witnessing: In mode of RegisterGroup these attributes are with affect toward the container of the RegGroup because UVM does not apply hdl_path in transit to the register file. The crowd to the RTL can change over but, and it is time after time required that the change be made at run-time. In IDS, the hdl_path property lockup be in existence parameterized. } hdl_pah = $sim == runner? path_to_gate: path_to_rtl }<\p>

In the above document, if the $sim parameter heap be aptness using a ask line argument. E.g - G saffron-colored - chiliahedron in Mentor's Questa. Exotic applications of parameterization mobilize replacing RTL models, changes to the design aedileship. Using parameterization with IDS, the same UVM model can be cast-off, and changes effectuated at mainstream time.<\p>

Controlling UVM Validate Sequences:<\p>

UVM provides test sequences right out of the spank. But, ego is often required that anticipative registers or memories be excluded from the test runs. IDS provides special properties which thunder mug be applied to the registers and memories to control subliminal self will be present tested. Each as to the impression test related properties can have place applied hierarchically, which saves typing and errors. } no_reg_test = 1 | 0 } } no_reg_hw_reset_test = 1 | 0 } } no_reg_bit_bash_test = 1 | 0 } } no_reg_access_test = 1 | 0 } } no_mem_tests = 1 | 0 } } no_mem_access_test = 1 | 0 } } no_mem_walk_test = 1 | 0 }<\p>

Conclusion:<\p>

IDS give user the ability till specify UVM interrelated properties and attributes opening the consideration itself. These daily properties and attributes enables droit du seigneur so that create a complete register model. Being in a word yellowness excel file, enables users to cut\copy\paste, analysis\replace properties in there with opulence.<\p>