Section 20 Ethernet Controller (EtherC)
Rev. 1.00 Mar. 12, 2008 Page 777 of 1178
REJ09B0403-0100
FDPX
FDPX
HDPX
HDPX
Collision
Collision
Collision
*
2
Error
Error
Error
Normal transmission
Notes: 1. Retransmission processing includes both jam transmission that depends on collision
detection and the adjustment of transmission intervals based on the back-off algorithm.
2. Retransmission processing is only performed when data of 512 bits or less (including the
preamble and SFD) is transmitted. When a collision is detected during transmission of data
greater than 512 bits, only jam is transmitted and retransmission based on the back-off
algorithm is not performed.
Error
notification
Transmission
halted
Start of transmission
(preamble transmission)
Carrier
detected
Carrier
detection
SFD
transmission
CRC
transmission
Data
transmission
Carrier
detection
Failure of 15
retransfer attempts
or collision
after 512-bit time
Retransmission
processing
*
1
Error detection
Carrier
not detected
Carrier
not detected
Idle
TE set
TE reset
Reset
[Legend]
FDPX: Path for full-duplex mode
HDPX: Path for half-duplex mode
SFD: Start Frame Delimiter
Initiate
retransmission
Figure 20.2 EtherC Transmitter State Transitions
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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