摘要:
A processing system and method for transferring data in a processing system. The processing system includes a bus mastering device, a plurality of slave devices, and a bus interconnect configured to switch the bus mastering device between the slave devices. Each of the slave devices has a plurality of addresses. The bus interconnect includes a DMA controller configured to transfer data from a first one of the addresses to a second one of the addresses in response to a single bus command from the bus mastering device.
摘要:
A method of communicating over a bus is disclosed. The bus includes a write address channel, a write channel, and a read address channel. The method includes sending an address from a sending device to a receiving device via the write address channel. The method further includes concurrently sending a portion of a payload to the receiving device via the write channel and another portion of the payload to the receiving device via the read address channel. When sending multiple sequential portions of the payload via the bus concurrently, the sending device is configured to give data ordering preference to the write channel over the read address channel by sending a first sequential portion of the multiple sequential portions via the write channel and sending a subsequent sequential portion of the multiple sequential portions via the read address channel.
摘要:
A processing system and method for communicating in a processing system over a bus is disclosed. The processing system includes a receiving device, a bus having first, second and third channels, and a sending device configured to address the receiving device on the first channel, and read a payload from the receiving device on the second channel, the sending device being further configured to write a first portion of a payload to the receiving device on the first channel and a second portion of the payload to the receiving device on the third channel.
摘要:
A processing system and method for communicating in a processing system over a bus is disclosed. The processing system includes a receiving device, a bus having first, second and third channels, and a sending device configured to address the receiving device on the first channel, and read a payload from the receiving device on the second channel, the sending device being further configured to select between the first and third channels to write a payload to the receiving device.
摘要:
A processing system and method for communicating in a processing system over a bus is disclosed. The processing system includes a receiving device, a bus having first, second and third channels, and a sending device configured to address the receiving device on the first channel, and read a payload from the receiving device on the second channel, the sending device being further configured to select between the first and third channels to write a payload to the receiving device.
摘要:
A processing system and method for communicating in a processing system over a bus is disclosed. The processing system includes a receiving device, a bus having first, second and third channels, and a sending device configured to address the receiving device on the first channel, and read a payload from the receiving device on the second channel, the sending device being further configured to write a first portion of a payload to the receiving device on the first channel and a second portion of the payload to the receiving device on the third channel.
摘要:
A bus arbitration scheme in a processing system. The processing system includes a bus, a plurality of processors coupled to the bus, and a bus arbiter. The bus arbiter may assign a first tier weight to each of the processors in a first tier, and a second tier weight to each of the processors in a second tier. The bus arbiter may sequentially grant bus access to the one or more processors during an initial portion of a bus interval based on the assigned second tier weights, and grant bus access to any one of the processors during the initial portion of the bus interval in response to a request from said any one of the processors having a first tier weight. When multiple processors are requesting access to the bus, the bus arbiter may grant bus access to the requesting processor with the highest weight in the highest tier.
摘要:
A method of communicating over a bus is disclosed. The bus includes a write address channel, a write channel, and a read address channel. The method includes sending an address from a sending device to a receiving device via the write address channel. The method further includes concurrently sending a portion of a payload to the receiving device via the write channel and another portion of the payload to the receiving device via the read address channel. When sending multiple sequential portions of the payload via the bus concurrently, the sending device is configured to give data ordering preference to the write channel over the read address channel by sending a first sequential portion of the multiple sequential portions via the write channel and sending a subsequent sequential portion of the multiple sequential portions via the read address channel.
摘要:
A processing system and method for transferring data in a processing system. The processing system includes a bus mastering device, a plurality of slave devices, and a bus interconnect configured to switch the bus mastering device between the slave devices. Each of the slave devices has a plurality of addresses. The bus interconnect includes a DMA controller configured to transfer data from a first one of the addresses to a second one of the addresses in response to a single bus command from the bus mastering device.
摘要:
A method for communicating via a bus including a first channel, a second channel, and a third channel is disclosed. The method includes addressing a slave device via the first channel, receiving from the slave device via the second channel, and writing to the slave device via the third channel. The method further includes selecting between first and second bus transmission modes. In the first bus transmission mode, payload write data is to be sent to the slave device via the first channel or the third channel. In the second bus transmission mode, during a first clock cycle, second payload write data associated with a second write operation is to be sent to the slave device via the first channel and first payload write data associated with a first write operation is to be concurrently sent to the slave device via the third channel.