How much data should be stored in built in FIFO in order to start EDMAC?
Latest Updated:03/24/2009
Question:
How much data should be stored in the built-in transmit/receive FIFO in order to start E-DMAC (Ethernet Controller Direct Memory Access Controller)?
Answer:
When transmitting: E-DMAC starts when 16 byte data is written to FIFO.
When receiving: E-DMAC starts when the following conditions are satisfied.
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The amount of data exceeds the number of bytes specified by Transmit FIFO Threshold Register(TFTR).
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Transmit FIFO is full
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1-frame write is execut
Suitable Products
| SH-Ether |
| SH7618 |
| SH7616 |
| SH7615 |