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VS1002D Datasheet, PDF (25/54 Pages) List of Unclassifed Manufacturers – MP3 AUDIO CODEC | |||
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VLSI
Solution y
VS1002d
VS1002D
8. FUNCTIONAL DESCRIPTION
8.5 Serial Control Interface (SCI)
The serial control interface is compatible with the SPI bus speciï¬cation. Data transfers are always 16
bits. VS1002d is controlled by writing and reading the registers of the interface.
The main controls of the control interface are:
⢠control of the operation mode
⢠uploading user programs
⢠access to header data
⢠status information
⢠access to encoded digital data
8.6 SCI Registers
SCI registers, preï¬x SCI , offset 0xC000
Reg Type Reset Abbrev[bits]
Description
0x0 rw 0x800 MODE
0x1 rw 0x2C1 STATUS
Mode control.
Status of VS1002d.
0x2 rw 0
BASS
Built-in bass enhancer.
0x3 rw 0
CLOCKF
Clock freq + doubler.
0x4 r 0
DECODE TIME Decode time in seconds.
0x5 rw 0
AUDATA
Misc. audio data.
0x6 rw 0
WRAM
RAM write.
0x7 rw 0
WRAMADDR
Base address for RAM write.
0x8 r 0
HDAT0
Stream header data 0.
0x9 r 0
HDAT1
Stream header data 1.
0xA rw 0
AIADDR
Start address of application.
0xB rw 0
VOL
Volume control.
0xC rw 0
AICTRL0
Application control register 0.
0xD rw 0
AICTRL1
Application control register 1.
0xE rw 0
AICTRL2
Application control register 2.
0xF rw 0
AICTRL3
Application control register 3.
1 Firmware changes the value of this register immediately to 0x28, and in less than 100 ms to 0x20.
Version 1.0, 2005-04-27
25
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