Altera Arria 10 Avalon-MM Manual de usuario Pagina 54

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Signal Name Direction Description
TxsByteEnable_i[<w>-1:0]
Input Write byte enable for data. A burst must be continuous.
Therefore all intermediate data phases of a burst must
have a byte enable value of 0xFF. The first and final data
phases of a burst can have other valid values.
For the 128-bit interface, the following restrictions
apply:
All bytes of a single dword must either be enabled or
disabled
If more than 1 dword is enabled, the enabled dwords
must be contiguous. The following patterns are legal:
16'bF000
16'b0F00
16'b00F0
16'b000F
16'bFF00
16'b0FF0
16'b00FF
16'bFFF0
16'b0FFF
16'bFFFF
TxsReadDataValid_o
Output Asserted by the bridge to indicate that read data is valid.
TxsReadData_o[127 or 63:0]
Output The bridge returns the read data on this bus when the
RX read completions for the read have been received
and stored in the internal buffer.
TxsWaitrequest_o
Output Asserted by the bridge to hold off read or write data
when running out of buffer space. If this signal is
asserted during an operation, the master should
maintain the TxsRead_i signal (or TxsWrite_i signal
and TxsWriteData) stable until after TxsWaitrequest_
o is deasserted. txs_Read must be deasserted when
TxsWaitrequest_o is deasserted.
UG-01145_avmm
2015.05.14
64- or 128-Bit Bursting TX Avalon-MM Slave Signals
5-7
64- or 128-Bit Avalon-MM Interface to the Application Layer
Altera Corporation
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