Section 9 Ethernet Controller (EtherC)
Rev. 2.00 Mar 09, 2006 page 405 of 906
REJ09B0292-0200
Reset
RE set
RE reset
SFD: Start frame delimiter
Note: The error frame also transmits data to the buffer.
Preamble
detection
Rx-DV negation
Promiscuous and other station
destination address
SFD
reception
Own destination
address
or broadcast
or multicast
or promiscuous
End of
reception
Error
notification
Receive
error
detection
Receive error
detection
Normal reception
Reception
halted
Illegal carrier
detection
Idle
Start of frame
reception
Destination
address
reception
Error
detection
Data
reception
CRC
reception
Wait for SFD
reception
Figure 9.3 EtherC Receiver State Transitions
1. When the receive enable (RE) bit is set, the receiver enters the receive idle state.
2. When an SFD (start frame delimiter) is detected after a receive packet preamble, the receiver
starts receive processing.
3. If the destination address matches the receiver’s own address, or if broadcast or multicast
transmission or promiscuou
s
mode is specified, the receiver starts data reception.
4. Following data reception, the receiver carries out a CRC check. The result is indicated as a
status bit in the descriptor after the frame data has been written to memory.
5. After one frame has been received, if the receive enable bit is set (RE = 1) in the EtherC mode
register, the receiver prepares to receive the next frame.
Содержание SH7616
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Страница 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Страница 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Страница 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Страница 662: ...Section 14 Serial Communication Interface with FIFO SCIF Rev 2 00 Mar 09 2006 page 636 of 906 REJ09B0292 0200 ...
Страница 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Страница 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Страница 935: ...SH7616 Hardware Manual ...