Jasper Lake EDS Vol1
Datasheet
| ID | Date | Version | Classification |
|---|---|---|---|
| 633935 | 01/01/2021 | Public Content |
A newer version of this document is available. Customers should click here to go to the newest version.
Functional Description
The SD controller handles SD Protocol at transmission, packing data, adding cyclic redundancy check (CRC), start/end bit, and checking for transaction format correctness. The main use case for SD is to connect to an external detachable storage and /or I/O device. Both 1.8 V and 3.3 V signaling is supported. Additional information can be obtained from the specifications stated above.The following chart maps the working modes of SD.
| SD Mode | Data Rate | Clock Frequency | Maximum Data Throughput |
|---|---|---|---|
| Default Speed/SDR12 | Single | 0 – 25 MHz | 12.5 MB/s |
| High Speed/SDR25 | Single | 0 – 50 MHz | 25 MB/s |
| SDR50 | Single | 0 – 100 MHz | 50 MB/s |
| DDR50 | Dual | 0 – 50 MHz | 50 MB/s |
| SDR104 | Single | 0 – 208 MHz | 104 MB/s |