HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 317

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Bit
29
28
27
26 to 0
Bit Name
TFP1
TFP0
TFE
TFS26 to
TFS0
Initial
value
0
0
0
All 0
Section 12 Ethernet Controller Direct Memory Access Controller (E-DMAC)
R/W
R/W
R/W
R/W
R/W
Transmit Frame Position 1, 0
These two bits specify the relationship between the
transmit buffer and transmit frame. In the preceding
and following descriptors, a logically positive
relationship must be maintained between the settings
of this bit and the TDLE bit.
00: Frame transmission for transmit buffer indicated
01: Transmit buffer indicated by this descriptor
10: Transmit buffer indicated by this descriptor is start
11: Contents of transmit buffer indicated by this
Transmit Frame Error
Indicates that one or other bit of the transmit frame
status indicated by bits 26 to 0 is set. Whether or not
the transmit frame status information is copied into
this bit is specified by the transmit/receive status copy
enable register.
0: No error during transmission
1: An error occurred during transmission
Transmit Frame Status
TFS26 to TFS4: Reserved (The write value should
always be 0.)
TFS3: Carrier Not Detect (corresponds to CND bit in
TFS2: Detect Loss of Carrier (corresponds to DLC bit
TFS1: Delayed collision Detect (corresponds to CD
TFS0: Transmit Retry Over (corresponds to TRO bit
Description
by this descriptor continues (frame is not
concluded)
contains end of frame (frame is concluded)
of frame (frame is not concluded)
descriptor are equivalent to one frame (one
frame/one buffer)
EESR)
in EESR)
bit in EESR)
in EESR)
Rev. 6.00 Jun. 12, 2007 Page 285 of 610
REJ09B0131-0600