參數(shù)資料
型號(hào): VS1003
廠商: Electronic Theatre Controls, Inc.
元件分類: Codec
英文描述: MP3 / WMA AUDIO CODEC
中文描述: MP3播放/ WMA音頻編解碼器
文件頁(yè)數(shù): 43/57頁(yè)
文件大?。?/td> 456K
代理商: VS1003
VLSI
Solution
y
VS1003 PRELIMINARY
VS1003
10. VS1003 REGISTERS
10.7
GPIO Registers
GPIO registers, prefix GPIO
Abbrev[bits]
DDR[3:0]
IDATA[3:0]
ODATA[3:0]
Reg
Type
rw
r
rw
Reset
0
0
0
Description
Direction.
Values read from the pins.
Values set to the pins.
0xC017
0xC018
0xC019
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 VS1003 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 0.92,
2005-06-07
43
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