SH7619 Datasheet, PDF (330/836 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 12 Ethernet Controller Direct Memory Access Controller (E-DMAC)
Initial
Bit
Bit Name value R/W Description
29
TFP1
0
R/W Transmit Frame Position 1, 0
28
TFP0
0
R/W 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 by
this descriptor continues (frame is not concluded)
01: Transmit buffer indicated by this descriptor
contains end of frame (frame is concluded)
10: Transmit buffer indicated by this descriptor is start
of frame (frame is not concluded)
11: Contents of transmit buffer indicated by this
descriptor are equivalent to one frame (one
frame/one buffer)
27
TFE
0
R/W 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
26 to 0 TFS26 to All 0
TFS0
R/W Transmit Frame Status
TFS26 to TFS4: Reserved (The write value should
always be 0.)
TFS3: Carrier Not Detect (corresponds to CND bit in
EESR)
TFS2: Detect Loss of Carrier (corresponds to DLC bit
in EESR)
TFS1: Delayed Collision Detect (corresponds to CD bit
in EESR)
TFS0: Transmit Retry Over (corresponds to TRO bit in
EESR)
Rev. 5.00 Mar. 15, 2007 Page 292 of 794
REJ09B0237-0500