Section 23 Gigabit Ethernet Controller (GETHER)
Rev. 1.00 Oct. 01, 2007 Page 913 of 1956
REJ09B0256-0100
Bit Bit
Name
Initial
Value R/W Description
20
TDE
0
R/W
Transmit Descriptor Empty
Indicates that the transmit descriptor valid bit (TACT) of
a transmit descriptor read by the E-DMAC is not set if
the previous descriptor does not represent the end of a
frame in multi-buffer frame processing based on single-
frame/multi-descriptor operation. As a result, an
incomplete frame may be sent.
0: Transmit descriptor active bit TACT = 1 detected
1: Transmit descriptor active bit TACT = 0 detected
When transmit descriptor empty (TDE = 1) occurs,
execute a software reset and initiate transmission. In
this case, transmission starts from the address that is
stored in the transmit descriptor list start address
register (TDLAR).
19 TFUF 0 R/W
Transmit
FIFO
Underflow
Indicates that an underflow has occurred in the transmit
FIFO during frame transmission. Incomplete data is
sent onto the line.
0: Underflow has not occurred
1: Underflow has occurred
18 FR
0 R/W
Frame
Reception
Indicates that a frame has been received and the
receive descriptor has been updated. This bit is set to 1
each time a frame is received.
0: Frame has not been received
1: Frame has been received
17
RDE
0
R/W
Receive Descriptor Empty
Indicates that the RACT bit of a receive descriptor read
by the E-DMAC for receive DMA operation is cleared to
0 (invalid).
When receive descriptor empty (RDE = 1) occurs,
reception can be resumed by setting the RACT bit
(cleared to 0) of the receive descriptor to 1 and then
writing 1 to the RR bit in EDRRR.
0: Receive descriptor active bit RACT = 1 detected
1: Receive descriptor active bit RACT = 0 detected
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...