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HD6417618 Folha de dados(PDF) 330 Page - Renesas Technology Corp

Nome de Peças HD6417618
Descrição Electrónicos  32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
PDF  646 Pages
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
Página de início  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD6417618 Folha de dados(HTML) 330 Page - Renesas Technology Corp

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Section 12 Ethernet Controller Direct Memory Access Controller (E-DMAC)
Rev. 6.00 Jun. 12, 2007 Page 298 of 610
REJ09B0131-0600
(1)
Countermeasure
This problem does not occur with all of the bits in EESR. The description applies to some bits but
not others. Table 12.1 shows whether the problem can occur with the individual bits and whether
the state of the individual interrupt source is reflected in the descriptor.
Table 12.1
EESR Bits for which This Problem can Occur and Reflection of Interrupt
Sources in the Descriptor
Bit
Bit Name Status
Possibility
of Problem
Reflection in
Descriptor
Interrupt
Source
31
Reserved
30
TWB
Write-back complete
Yes
Transmit
29
Reserved
28
Reserved
27
Reserved
26
TABT
Transmit abort detected
Yes
Reflected in
TD0 bit8
(TFS8)
Transmit
25
RABT
Receive abort detected
No
Reflected in
RD0 bit8
(RFS8)
Reception
24
RFCOF
Receive frame counter overflow
Yes
Reception
23
ADE
Address error
No
Others
22
ECI
EtherC status register interrupt
source
No
Others
21
TC
Frame transmission complete
Yes
Reflected in
TD0 bit31
(TACT)
Transmit
20
TDE
Transmit descriptor empty
No
Transmit
19
TFUF
Transmit FIFO underflow
Yes
Transmit
18
FR
Frame received
No
Reflected in
RD0 bit31
(RACT)
Reception
17
RDE
Receive descriptor empty
No
Reception
16
RFOF
Receive FIFO overflow
Yes
Reflected in
RD0 bit9
(RFS9)
Reception



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