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NS9750 - Training Hardware

NS9750 - Training Hardware. BBUS Bridge Module. BBUS Bridge Features. Support External DMA transfers Aggregate the interrupts generated by the various BBUS peripherals Arbitrate BBUS control amongst the bus masters residing on BBUS

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NS9750 - Training Hardware

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  1. NS9750 - Training Hardware

  2. BBUS Bridge Module

  3. BBUS Bridge Features • Support External DMA transfers • Aggregate the interrupts generated by the various BBUS peripherals • Arbitrate BBUS control amongst the bus masters residing on BBUS • Translate AMBA AHB bus transactions to Netsilicon proprietary BBUS transactions • Translate Netsilicon proprietary BBUS transactions to AMBA AHB bus transactions

  4. BBUS Bridge – External DMA • Two independent external DMA channels • Supports byte, half-word and word transfers • Supports single and burst transfers • Supports initiation by external signaling or initiation by software • Supports memory to memory DMA and memory to external peripheral DMA • Supports any source and destination address alignment

  5. BBUS Bridge – Interrupt Aggregation • Provides a central location for software to learn which BBUS peripherals are in need of servicing. • Provides a central location for software to disable individual BBUS peripheral interrupts.

  6. BBUS Bridge – Block Diagram

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