VS1033 Datasheet, PDF (55/70 Pages) List of Unclassifed Manufacturers – MP3/AAC/WMA/MIDI AUDIO CODEC

VLSI
Solution ^y
VS1033a PRELIMINARY
VS1033A
10. VS1033 REGISTERS
10.7 GPIO Registers
Reg
0xC017
0xC018
0xC019
Type
rw
r
rw
Reset
0
0
0
GPIO registers, prefix GPIO
Abbrev[bits]
Description
DDR[7:0]
IDATA[7:0]
Direction
Values read from the pins
ODATA[7:0]
Values set to the pins
GPIO DIR is used to set the direction of the GPIO pins. 1 means output. GPIO ODATA remembers its
values even if a GPIO DIR bit is set to input.
GPIO registers don’t generate interrupts.
Note that in VS1033 the VSDSP registers can be read and written through the SCI WRAMADDR and
SCI WRAM registers. You can thus use the GPIO pins quite conveniently.
Version 0.6, 2005-01-05
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