VS1003B - VLSI

VS1003B 16/32-Button Player

coff2boot.exe and perl.exe in the source package (use ”make bins” to compile and generate images). SD-card mini player sources added. Shuffle added. Changed the polynomial fit for 32-button detection. Source code packet added, but no instructions yet. Improved responsiveness of the buttons. Increased MMC/SD SEND OP COND timeout. 32-button version and saving of s.

Features

are subject to change without notice. The SPI bootloader that is available in VS10XX chips can be used to add new features to the system. Patch codes and new codecs can be automatically loaded from SPI EEPROM at startup. One interesting application is a single-chip standalone player. The standalone player application uses MMC/SD directly connected to VS1003 using the same GPIO pins that are used to download the player software from the boot EEPROM. The instruction RAM of 1280 words (5 kilobytes) is used for MMC communication routines, read-only handling of the FAT and FAT32 filesystems and a 16.