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ADSP-2126x SHARC Processor Hardware Reference
This mode sends one packed 32-bit word to FIFO for every two input
clock cycles—the DMA transfer rate is one-half the PDAP input clock
rate.
Packing Mode 01
Mode 01 packs three acquired samples together. Since the resulting 32-bit
word is not divisible by three, up to ten bits are acquired on the first clock
edge and up to eleven bits are acquired on each of the second and third
clock edges:
• On clock edge 1, bits 19:10 are moved to bits 9:0 (10 bits)
• On clock edge 2, bits 19:9 are moved to bits 20:10 (11 bits)
• On clock edge 3, bits 19:9 are moved to bits 31:21 (11 bits)
This mode sends one packed 32-bit word to FIFO for every three input
clock cycles—the DMA transfer rate is one-third the PDAP input clock
rate.
Packing Mode 00
Mode 00 moves data in four cycles. Each input word can be up to 8 bits
wide.
• On clock edge 1, bits 19:12 are moved to bits 7:0
• On clock edge 2, bits 19:12 are moved to bits 15:8
• On clock edge 3, bits 19:12 are moved to bits 23:16
• On clock edge 4, bits 19:12 are moved to bits 31:24
This mode sends one packed 32-bit word to FIFO for every four input
clock cycles—the DMA transfer rate is one-quarter the PDAP input clock
rate.
Содержание ADSP-21261 SHARC
Страница 30: ...Contents xxx ADSP 2126x SHARC Processor Hardware Reference ...
Страница 40: ...Register Diagram Conventions xl ADSP 2126x SHARC Processor Hardware Reference ...
Страница 58: ...Differences From Previous SHARCs 1 18 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 112: ...Secondary Processing Element PEy 2 54 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 178: ...Summary 3 66 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 204: ...DAG Instruction Summary 4 26 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 322: ...Setting Up DMA 7 32 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 436: ...SPORT Programming Examples 9 86 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 521: ...ADSP 2126x SHARC Processor Hardware Reference 11 31 Input Data Port rts IDP_ISR end ...
Страница 522: ...Input Data Port Programming Example 11 32 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 590: ...Timer Programming Examples 14 20 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 796: ...I O Processor Registers A 174 ADSP 2126x SHARC Processor Hardware Reference ...
Страница 800: ...B 4 ADSP 2126x SHARC Processor Core Manual ...
Страница 846: ...Index I 36 ADSP 2126x SHARC Processor Hardware Reference ...