Xilinx 7 Series User Manual

7 Series FPGAs GTP Transceivers User Guide www.xilinx.com 163
UG482 (v1.9) December 19, 2016
RX Byte and Word Alignment
boundary. In such applications, RXBYTEISALIGNED should not be used as a valid indicator of the
change in byte boundary after the first assertion.
Alignment Boundaries
The allowed boundaries for alignment are defined by ALIGN_COMMA_WORD. The spacing of
the possible boundaries is determined by RX_DATA_WIDTH, and the number of boundary
positions is determined by the number of bytes in the RXDATA interface (refer to Table 4-43,
page 214 for RX_DATA_WIDTH settings). Figure 4-30 shows the boundaries that can be selected.
X-Ref Target - Figure 4-30
Figure 4-30: Comma Alignment Boundaries
ALIGN_COMMA_WORD
16/20
(2-byte)
Possible RX Alignments
(Grey = Comma Can Appear on Byte)
16/20
(2-byte)
1
2
32/40
(4-byte)
32/40
(4-byte)
1
2
Byte0Byte1
Byte0Byte1
Byte0Byte1Byte2Byte3
Byte0Byte1Byte2Byte3
UG482_c4_19_112811
R X_D A T A_W IDTH
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Xilinx 7 Series Specifications

General

Brand	Xilinx
Model	7 Series
Category	Computer Hardware
Language	English