
MosChip Technologies

MosChip Technologies Interview Questions and Answers
Q1. What is factory override in UVM?
Factory override in UVM allows users to replace default factory methods with custom implementations.
Factory override is used to customize the behavior of UVM components without modifying the original source code.
It allows users to replace default factory methods with custom implementations to meet specific requirements.
Factory override can be useful for debugging, testing, or adding new features to existing UVM components.
Example: Overriding the default create method in a UVM...read more
Q2. What is m_sequencer and p_sequencer?
m_sequencer and p_sequencer are components used in design and verification for sequencing operations.
m_sequencer and p_sequencer are commonly used in digital design for controlling the sequence of operations.
m_sequencer typically refers to a master sequencer, while p_sequencer refers to a peripheral sequencer.
These components are often used in verification environments to ensure proper sequencing of events.
For example, m_sequencer may control the overall flow of a testbench, ...read more
Q3. What is the call back in UVM?
A call back in UVM is a mechanism used to notify a component about a specific event or condition.
A call back is defined using a function or task in the UVM component.
It is registered with the UVM framework to be executed when a certain event occurs.
Call backs are commonly used for handling events like transaction completion or error detection.
Q4. how to fix antenna violation?
Antenna violations can be fixed by adjusting the metal layers, adding shielding, or changing the routing.
Adjust metal layers to increase spacing between antennas
Add shielding to isolate antennas from each other
Change routing to avoid crossing antennas
Q5. What is Mos capacitor
A MOS capacitor is a metal-oxide-semiconductor structure used in integrated circuits for storing charge.
Consists of a metal gate separated from a semiconductor substrate by a thin insulating layer
Used in various applications such as DRAM cells and analog circuits
Capable of storing charge and modulating the capacitance based on the voltage applied
Q6. What is Mirror circuit
A mirror circuit is a circuit configuration where two transistors are connected in a way that their characteristics are mirrored.
Consists of two transistors with their bases connected together
Used to replicate a current or voltage with high accuracy
Commonly used in current mirrors and voltage mirrors
Q7. What are the type of testing you use?
I use various types of testing such as functional testing, performance testing, interoperability testing, and security testing.
Functional testing: Ensuring that the Bluetooth/WLAN features work as expected.
Performance testing: Evaluating the speed and responsiveness of the Bluetooth/WLAN connections.
Interoperability testing: Checking compatibility with different devices and networks.
Security testing: Assessing the security measures in place to protect Bluetooth/WLAN connectio...read more
Q8. Explain the PD flow?
PD flow is the process of designing and implementing the physical layout of an integrated circuit.
PD flow involves floorplanning, placement, routing, and physical verification.
Floorplanning determines the placement of blocks and macros on the chip.
Placement involves placing standard cells in the available space based on timing and area constraints.
Routing connects the placed cells using metal layers to create the final interconnections.
Physical verification checks for design ...read more
Q9. Previous exp on domain specific
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