
ADSP-2126x SHARC Processor Hardware Reference
10-7
Serial Peripheral Interface Port
8-bit host microcontroller is the SPI master. The processor can be booted
via its SPI interface to allow application code and data to be downloaded
prior to runtime.
illustrates an example of an ADSP-2126x SPI interface where
the processor is the SPI master. When it uses the SPI interface, the proces-
sor can be directed to alter the conversion resources, mute the sound,
modify the volume, and power down the AD1855 stereo DAC.
SPI General Operations
The SPI in the ADSP-2126x processor can be used in a single master as
well as in a multimaster environment. In both configurations, every
MOSI
pin in the SPI system is connected. Likewise, every
MISO
pin in the system
Figure 10-4. ADSP-2126x Processor as SPI Slave
Figure 10-5. ADSP-2126x Processor as SPI Master
MICROCONTROLLER
SCLK
S_SEL
MOSI
ADSP-2126x
SLAVE SPI DEVICE
SPICLK
SPIDS
MOSI
8-bit Host
MISO
MISO
ADSP-2126x
MASTER DEVICE
SPICLK
FLAG0
MOSI
AD1855
STEREO 96 KHZ DAC
CCLK
CLATCH
DATA
Summary of Contents for ADSP-21261 SHARC
Page 30: ...Contents xxx ADSP 2126x SHARC Processor Hardware Reference ...
Page 40: ...Register Diagram Conventions xl ADSP 2126x SHARC Processor Hardware Reference ...
Page 58: ...Differences From Previous SHARCs 1 18 ADSP 2126x SHARC Processor Hardware Reference ...
Page 112: ...Secondary Processing Element PEy 2 54 ADSP 2126x SHARC Processor Hardware Reference ...
Page 178: ...Summary 3 66 ADSP 2126x SHARC Processor Hardware Reference ...
Page 204: ...DAG Instruction Summary 4 26 ADSP 2126x SHARC Processor Hardware Reference ...
Page 322: ...Setting Up DMA 7 32 ADSP 2126x SHARC Processor Hardware Reference ...
Page 436: ...SPORT Programming Examples 9 86 ADSP 2126x SHARC Processor Hardware Reference ...
Page 521: ...ADSP 2126x SHARC Processor Hardware Reference 11 31 Input Data Port rts IDP_ISR end ...
Page 522: ...Input Data Port Programming Example 11 32 ADSP 2126x SHARC Processor Hardware Reference ...
Page 590: ...Timer Programming Examples 14 20 ADSP 2126x SHARC Processor Hardware Reference ...
Page 796: ...I O Processor Registers A 174 ADSP 2126x SHARC Processor Hardware Reference ...
Page 800: ...B 4 ADSP 2126x SHARC Processor Core Manual ...
Page 846: ...Index I 36 ADSP 2126x SHARC Processor Hardware Reference ...