Jasper Lake EDS Vol1

Datasheet

ID 633935
Date 01/01/2021
Public Content

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Document Table of Contents
DSP

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 Working Modes

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