**Transcription and Explanation:**### Code Explanation:The code provided is a hardware description written in Verilog. It defines a module named `FrameChecker`, which appears to be part of a finite state machine (FSM).#### Inputs and Outputs:- **Inputs:** - `Clk`: A clock signal. - `Rst`: A reset signal. - `StartIn`: A start input signal. - `EndIn`: An end input signal.- **Output:** - `ErrorOut`: A logical output signal indicating error status.#### Enumerated States:The code defines three states using an enumeration (`enum`):- `sReset`: The reset state.- `sIdle`: The idle state.- `iActive`: The active state.#### State Transitions:An `always` block that triggers on the rising edge of either `Clk` or `Rst` manages the state transitions.- **Reset Condition:** - When `Rst` is 1, the output `ErrorOut` is set to 0, and the state `sState` transitions to `sReset`.- **State Handling:** - **sReset:** Transitions to `sIdle`. - **sIdle:** If `StartIn` is 1, transitions to `iActive`. - **iActive:** - If `EndIn` is 1, transitions back to `sIdle`. - If `StartIn` is 1, sets `ErrorOut` to 1.### Question:"What type of reset does the following code use?"#### Options:- Asynchronous- Synchronous### Answer:The reset used is **asynchronous** because the state transition on the reset (`Rst`) occurs immediately when `Rst` is high, regardless of the clock signal (`Clk`), i.e., the presence of `posedge Rst` in the sensitivity list.

Answered: What type of reset does the following…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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**Transcription and Explanation:**

### Code Explanation:
The code provided is a hardware description written in Verilog. It defines a module named `FrameChecker`, which appears to be part of a finite state machine (FSM).

#### Inputs and Outputs:
- **Inputs:**
- `Clk`: A clock signal.
- `Rst`: A reset signal.
- `StartIn`: A start input signal.
- `EndIn`: An end input signal.

- **Output:**
- `ErrorOut`: A logical output signal indicating error status.

#### Enumerated States:
The code defines three states using an enumeration (`enum`):
- `sReset`: The reset state.
- `sIdle`: The idle state.
- `iActive`: The active state.

#### State Transitions:
An `always` block that triggers on the rising edge of either `Clk` or `Rst` manages the state transitions.
- **Reset Condition:**
- When `Rst` is 1, the output `ErrorOut` is set to 0, and the state `sState` transitions to `sReset`.
- **State Handling:**
- **sReset:** Transitions to `sIdle`.
- **sIdle:** If `StartIn` is 1, transitions to `iActive`.
- **iActive:**
- If `EndIn` is 1, transitions back to `sIdle`.
- If `StartIn` is 1, sets `ErrorOut` to 1.

### Question:
"What type of reset does the following code use?"

#### Options:
- Asynchronous
- Synchronous

### Answer:
The reset used is **asynchronous** because the state transition on the reset (`Rst`) occurs immediately when `Rst` is high, regardless of the clock signal (`Clk`), i.e., the presence of `posedge Rst` in the sensitivity list.

Expert Solution

Introduction

Either an asynchronous or synchronous reset occurs. As soon as the reset signal is asserted, an asynchronous reset begins to operate. As soon as the reset signal is asserted, a synchronous reset begins to operate on the active clock edge.

Regardless of the state of the clock input, asynchronous inputs on such a flip-flop have control over outputs (Q and not-Q). The preset (PRE) and clear inputs are what these are known as (CLR). The flip-flop is driven to a set state by the preset input and to a reset state by the clear input. Synchronous = occurring at the same moment. Asynchronous means not occurring simultaneously. Participants may get quick feedback using synchronous learning. The participants may study at their own speed via asynchronous learning.