HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 438

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

Bit 16: RFOF
0
1
Notes: 1. If there are a number of receive frames in the Rx FIFO, they will not be sent to memory
Bits 15 to 13—Reserved: These bits should only be written with 0.
Bit 12—Illegal Tx Frame (ITF): Indicates that the transmit frame length specification is less than
four bytes.
Bit 12: ITF
0
1
Bit 11—Carrier Not Detect (CND): Indicates the carrier detection status.
Bit 11: CND
0
1
Bit 10—Detect Loss of Carrier (DLC): Indicates that loss of the carrier has been detected during
frame transmission.
Bit 10: DLC
0
1
Bit 9—Collision Detect (CD): Indicates that a collision has been detected during frame
transmission.
Bit 9: CD
0
1
2. Whether E-DMAC operation continues or halts after overflow is controlled by the E-
correctly. The status of the frame that caused the overflow is written back to the receive
descriptor.
DMAC operation control register (EDOCR).
Description
Overflow has not occurred
Overflow has occurred (interrupt source)
Description
Normal transmit frame length
Illegal transmit frame length (interrupt source)
Description
A carrier is detected when transmission starts
Carrier not detected (interrupt source)
Description
Loss of carrier not detected
Loss of carrier detected (interrupt source)
Description
Collision not detected
Collision detected (interrupt source)
(Initial value)
(Initial value)
(Initial value)
(Initial value)
(Initial value)
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