SD Card Protocol Analyzer 4.1

SD Card Protocol Analyzer is a focused tool for engineers who need clear visibility into SD bus activity. It captures and decodes SD card communications, then presents them in an easy-to-navigate timeline so you can pinpoint issues, validate compliance, and optimize performance during bring-up and testing.

What it does

• Decodes SD and SPI mode traffic, including command/response exchanges, arguments, data blocks, and CRCs
• Parses CMD and ACMD sequences with response types, status bits, and register contents (for example, OCR, CID, CSD)
• Highlights protocol violations and common pitfalls in initialization, single- and multi-block transfers, and card state transitions
• Visualizes timing relationships with a synchronized view of commands, responses, and data payloads
• Provides fast search and filtering by command, address, error flags, and timestamps
• Computes throughput, latency, and bus utilization to aid performance analysis
• Lets you annotate sessions, set bookmarks, and generate shareable reports
• Imports captures from popular logic analyzers and open formats; exports to CSV, JSON, and text for collaboration and CI
• Offers a scriptable interface for batch analysis and regression testing

Who it’s for

• Embedded and firmware engineers bringing up hosts and drivers
• Hardware teams validating signal integrity and protocol compliance
• QA and manufacturing teams performing repeatable checks and failure analysis

Benefits

• Shortens debug cycles by turning raw traces into readable transactions
• Catches subtle edge cases early with automated checks and clear diagnostics
• Speeds collaboration with portable captures and one-click reports

Note: Actual capabilities depend on your capture hardware and signal access method; the software works with standard SD interposers and common logic analyzer outputs.

SD Card Protocol Analyzer is developed by YDC. The most popular versions of this product among our users are: 3.1 and 4.1. The name of the program executable file is SDCAnalyzer.exe.

You can check Wireshark, Colasoft Capsa Professional, Unicorn Network Analyzer and other related programs like Field Bus Protocol Analyzer at the "download" section.