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9–10 Chapter 9: Custom PHY IP Core
Byte Order Parameters
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
1 You cannot enable Rate Match FIFO when your application requires byte ordering.
Because the rate match function inserts and deletes idle characters, it may shift the
SOP to a different byte lane.
Table 9–8. Byte Order Options (Part 1 of 2)
Name Value Description
Enable byte ordering block On/Off
Turn this option on if your application uses serialization to create a
datapath that is larger than 1 symbol. This option is only available if
you use the byte deserializer for the following configurations:
Configuration 1:
16-bit FPGA fabric-transceiver interface
No 8B/10B decoder (8-bit PMA-PCS interface)
Word aligner in manual alignment mode
Configuration 2:
16-bit FPGA fabric-transceiver interface
8B/10B decoder (10-bit PMA-PCS interface)
Word aligner in automatic synchronization state machine mode
Configuration 3:
32-bit FPGA fabric-transceiver interface
No 8B/10B decoder (16-bit PMA-PCS interface)
Word aligner in manual alignment mode
Configuration 4:
32-bit FPGA fabric-transceiver interface
8B/10B decoder (20-bit PMA-PCS interface)
Word aligner in manual alignment mode
Configuration 5:
40-bit FPGA fabric-transceiver interface
No 8B/10B decoder (20-bit PMA-PCS interface)
Word aligner in manual alignment mode
This option creates the
rx_byteordflag
signal which is asserted
when the received data is aligned to the byte order pattern that you
specified.
Enable byte ordering block
manual control
On/Off
Turn this option on to choose manual control of byte ordering. This
option creates the
rx_enabyteord
signal. A byte ordering operation
occurs whenever
rx_enabyteord
is asserted. To perform multiple
byte ordering operations, deassert and reassert
rx_enabyteord
.
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