FBFM2112F897CSLJLS View Datasheet(PDF) - Intel

Part Name

Description

Manufacturer

FBFM2112F897CSLJLS

Intel® FM2112 24-Port 10G/1G Ethernet Switch Chip

Intel 

Intel® FM2112 24-Port 10G/1G Ethernet Switch Chip Data Sheet

3.5.1.1

Figure 13. Example of Intel®Ethernet Switch Family with a PCI DMA Controller

Packet Transmission and Reception without a DMA Controller

In absence of DMA controller, the data transfer protocol is the

following:

Packet transmission

• Check that the transmitter is ready by reading the TXRDY bit of the LCI_STATUS

register. If not ready, either poll this bit until the transmitter is ready or enable an

interrupt to wait for this status.

• Write the packet length word into the LCI_TX_FIFO register as described in

Table 76.

55

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