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VLSI
Solution
y
VS1103b
VS1103B
8. VS1103B REGISTERS
8 VS1103b Registers
8.1 Who Needs to Read This Chapter
User software is required when a user wishes to add some own functionality like DSP effects to VS1103b.
However, most users of VS1103b don’t need to worry about writing their own code, or about this chapter,
including those who only download software plugins from VLSI Solution’s Web site.
8.2 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.
8.3 VS1103b Memory Map
VS1103b’s Memory Map is shown in Figure 14.
8.4 SCI Registers
SCI registers described in Chapter 6.6 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.
SCI CHANGE bits
Name
Bits
Description
SCI CH WRITE
4
1 if last access was a write cycle.
SCI CH ADDR
3:0
SPI address of last access.
8.5 Serial Data Registers
SDI registers, prefix SER
Reg
Type
Reset
Abbrev[bits]
Description
0xC011
r
0
DATA
Last received 2 bytes, big-endian.
0xC012
w
0
DREQ[0]
DREQ pin control.
Version 1.01, 2007-09-03
45
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