VS1053B Datasheet, PDF (65/79 Pages) List of Unclassifed Manufacturers – Ogg Vorbis/MP3/AAC/WMA/MIDI AUDIO CODEC

VLSI
Solution ^y
VS1053b preliminary
VS1053B
10. VS1053B REGISTERS
10 VS1053b Registers
10.1 Who Needs to Read This Chapter
User software is required when a user wishes to add some own functionality like DSP effects to VS1053b.
However, most users of VS1053b don’t need to worry about writing their own code, or about this chapter,
including those who only download software plug-ins from VLSI Solution’s Web site.
10.2 The Processor Core
VS DSP is a 16/32-bit DSP processor core that also had extensive all-purpose processor features. VLSI
Solution’s free VSKIT Software Package contains all the tools and documentation needed to write, sim-
ulate and debug Assembly Language or Extended ANSI C programs for the VS DSP processor core.
VLSI Solution also offers a full Integrated Development Environment VSIDE for full debug capabilities.
10.3 VS1053b Memory Map
X-memory
Address
Description
0x0000..0x17ff System RAM
0x1800..0x187f User RAM
0x1880..0x197f Stack
0x1980..0x3fff System RAM
0x4000..0xbfff ROM 32k
0xc000..0xc0ff Peripherals
0xc100..0xffff ROM 15.75k
Y-memory
Address
Description
0x0000..0x17ff System RAM
0x1800..0x187f User RAM
0x1880..0x197f Stack
0x1980..0x3fff System RAM
0x4000..0xdfff ROM 40k
0xe000..0xffff System RAM
I-memory
Address
Description
0x0000..0x004f System RAM
0x0050..0x0fff User RAM
0x1000..0x1fff -
0x2000..0xffff ROM 56k
and banked
0xc000..0xffff ROM4 16k
10.4 SCI Registers
SCI registers described in Chapter 8.7 can be found here between 0xC000..0xC00F. In addition to these
registers, there is one in address 0xC010, called SCI CHANGE.
SCI registers, prefix SCI
Reg Type Reset Abbrev[bits]
Description
0xC010 r 0
CHANGE[5:0]
Last SCI access address
Name
SCI CH WRITE
SCI CH ADDR
SCI CHANGE bits
Bits Description
4 1 if last access was a write cycle
3:0 SCI address of last access
Version 0.5, 2007-12-03
65