VLSIANSWERS
PUBLIC SEMICONDUCTOR KNOWLEDGE DESK
CITED WORKING ANSWER / STA
Why can useful skew improve setup but damage hold?
캡처 클록을 늦춰 setup에 쓸 수 있는 시간을 늘리면 같은 엣지 관계의 최소 지연 경로에서는 hold 여유가 줄 수 있습니다. 실제 영향은 launch·capture endpoint, 타이밍 도구의 skew 부호 규칙, uncertainty와 derate에 따라 달라지므로 두 검사를 함께 확인해야 합니다.
The working
answer stream.
정답을 가장하지 않습니다. 모든 페이지는 working answer, 출처, 검증 상태와 수정 경계를 함께 보여줍니다.
What is the boundary between a UVM driver and sequencer?
The sequencer coordinates sequence items; the driver translates them into interface activity.
Accellera UVM resources →Device / 03Why does GAA improve electrostatic control?
Wrapping the gate around more of the channel improves gate control over channel potential.
Technical review open · Primary device reference required →Career / 04How should a new graduate compare STA and PD roles?
Compare daily problem types, ownership boundaries, tool exposure and evidence you can build publicly.
Experience-based · No employer-specific claim →Architecture / 05What roles do CXL.io, CXL.cache, and CXL.mem serve?
protocol roles using the public CXL overview; avoid reproducing normative detail.
Compute Express Link Consortium →Architecture / 06Why should CXL device type be stated before comparing devices?
type/usage-model context before any performance claim.
Compute Express Link Consortium →Packaging / 07What problem does UCIe address in a chiplet system?
UCIe as package-level die-to-die standardization at a high level.
UCIe Consortium →Packaging / 08What changed in UCIe 2.0 for 3D packaging?
Cover announced 3D-package support without copying controlled specification details.
UCIe Consortium →Interface / 09Which UCIe 3.0 data rates are publicly announced?
with source-scoped public release values and conditions.
UCIe Consortium →Memory / 10Why must HBM bandwidth comparisons name the exact product and conditions?
standards taxonomy versus product-specific metrics.
JEDEC Solid State Technology Association →Find the duplicate first.
NDA, customer data, proprietary netlist, private PDK와 confidential debug는 받지 않습니다.
Why can useful skew improve setup but damage hold?
Relative launch and capture clock movement changes setup and hold margins in opposite ways. →
What is the boundary between a UVM driver and sequencer?
The sequencer coordinates sequence items; the driver translates them into interface activity. →
Why does GAA improve electrostatic control?
Wrapping the gate around more of the channel improves gate control over channel potential. →
How should a new graduate compare STA and PD roles?
Compare daily problem types, ownership boundaries, tool exposure and evidence you can build publicly. →
What roles do CXL.io, CXL.cache, and CXL.mem serve?
protocol roles using the public CXL overview; avoid reproducing normative detail. →
Why should CXL device type be stated before comparing devices?
type/usage-model context before any performance claim. →
What problem does UCIe address in a chiplet system?
UCIe as package-level die-to-die standardization at a high level. →
What changed in UCIe 2.0 for 3D packaging?
Cover announced 3D-package support without copying controlled specification details. →
Which UCIe 3.0 data rates are publicly announced?
with source-scoped public release values and conditions. →
Why must HBM bandwidth comparisons name the exact product and conditions?
standards taxonomy versus product-specific metrics. →
What is the purpose of a RISC-V profile?
why a profile provides a named software/implementation target. →
Why is RISC-V vector length not a universal performance number?
implementation-specific vector length and workload dependence. →
What does OpenROAD cover in an RTL-to-GDSII flow?
Map documented tool scope while preserving flow/version boundaries. →
How does OpenLane 2 relate to an ASIC implementation flow?
documented flow orchestration without claiming PPA outcomes. →
Why must an open-PDK result identify its PDK release?
rule/model/version dependence of implementation results. →
What is SKY130 and what should a project record alongside it?
PDK identity, release and toolchain provenance. →
What is GF180MCU and what are its documentation boundaries?
source/version-driven use of its public PDK docs. →
How should a SystemVerilog clocking/event question be sourced?
Point readers to the official IEEE language-standard channel and distinguish tool behavior. →
When should blocking and nonblocking assignment behavior be checked against IEEE 1800?
Frame a canonical semantics answer with a language-standard source, not folklore. →
What is the UVM sequence-item handshake at a high level?
roles while linking official Accellera UVM materials. →
Why use the UVM factory instead of hard-wiring a component type?
configurability concept with official UVM reference. →
What lifecycle concern do UVM objections address?
phase-completion coordination using UVM source material. →
What question should functional coverage answer?
Frame coverage as planned scenario observation, distinct from code coverage. →
What makes an assertion property different from a test stimulus sequence?
temporal checking versus stimulus generation. →
What problem is IEEE 1149.1 boundary scan intended to address?
standardized boundary-scan context without reproducing standard text. →
Why are timing constraints as important as path delays in STA?
analysis context and constraints with a documented open STA tool source. →
What is the conceptual difference between setup and hold checks?
Contrast maximum- and minimum-delay timing obligations, leaving tool convention explicit. →
Why should clock uncertainty not be silently folded into a path delay?
auditability benefit of named timing assumptions. →
Why can macro pin placement affect routing congestion?
geometry/demand relationship without asserting a universal fix. →
Which inputs must an IR-drop estimate disclose?
List current, topology, resistance and operating-condition provenance. →
What does the αCV²f dynamic-power model leave out?
explicit model exclusions and unit conversions. →
Why is ideal ADC LSB not the same as measured ENOB?
Distinguish ideal quantizer step from measured nonideal performance. →
Why must a junction-to-ambient thermal-resistance number include its conditions?
environment and board dependence in a first-order thermal model. →
Question
→ source
→ revision.
- 01Search a precise technical question
- 02Open the cited public source
- 03Add safe context or a correction
- 04Follow the reviewed revision