VS1033 Datasheet, PDF (53/70 Pages) List of Unclassifed Manufacturers – MP3/AAC/WMA/MIDI AUDIO CODEC

VLSI
Solution ^y
VS1033a PRELIMINARY
VS1033A
10. VS1033 REGISTERS
10 VS1033 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 VS1033.
However, most users of VS1033 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 VS1033 Memory Map
VS1033’s Memory Map is shown in Figure 14.
10.4 SCI Registers
SCI registers described in Chapter 8.6 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
10.5 Serial Data Registers
Reg
0xC011
0xC012
Type
r
w
Reset
0
0
SDI registers, prefix SER
Abbrev[bits]
Description
DATA
Last received 2 bytes, big-endian
DREQ[0]
DREQ pin control
Version 0.6, 2005-01-05
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