HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 415

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HD6417615

Manufacturer Part Number
HD6417615
Description
Hardware Manual
Manufacturer
Hitachi Semiconductor
Datasheet

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4. After waiting for the frame interval time, the transmitter enters the idle state, and if there is
9.3.2
The EtherC receiver separates a received frame into preamble, SFD, data, and CRC, and the fields
from DA (destination address) to the CRC data are transferred to the receive E-DMAC. The main
receive functions of the EtherC are as follows:
The state transitions of the EtherC receiver are shown in figure 9.3.
more transmit data, continues transmitting.
Receive frame header check: Checks the preamble and SFD, and discards a frame with an
invalid pattern
Receive frame data check: Checks the data length in the header, and reports an error status if
the data length is less than 64 bytes or greater than the specified number of bytes
Receive CRC check: Performs a CRC check on the frame data field, and reports an error status
in the case of an abnormality
Line status monitoring: Reports an error status if an illegal carrier is detected by means of the
fault detection signal from the PHY-LSI
Magic Packet monitoring: Detects a Magic Packet from all receive frames
Reception
399

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