
PCS-PMA Width PRBS Patterns PRBS Pattern Select Word Aligner Size Word Aligner Pattern
20-bit
PRBS 7 3’b000 3’b100 0x0000043040
PRBS 23 3’b001 3’b110 0x00007FFFFF
PRBS 15 3’b101 3’b100 0x0000007FFF
PRBS 31 3’b110 3’b110 0x007FFFFFFF
Registers and Values
The following table lists the offsets and registers for the Standard PCS pattern generator and verifier.
Note:
All undefined register bits are reserved.
Table 12-22: Offsets for the Standard PCS Pattern Generator and Verifier
Offset OffsetBits R/W Name Description
0x97
[9] R/W PRBS TX Enable When set to 1'b1, enables the PRBS
generator.
[8:6] R/W PRBS Pattern Select Specifies the encoded PRBS pattern
defined in the previous table.
0x99 [9] R/W Clock Power Down TX When set to 1'b1, powers down the
PRBS Clock in the transmitter. When
set to 1'b0, enables the PRBS
generator.
0xA0
[5] R/W PRBS RX Enable When set to 1'b1, enables the PRBS
verifier in the receiver.
[4] R/W PRBS Error Clear When set to 1'b1, deasserts rx_prbs_
done and restarts the PRBS pattern.
0xA1
[15:14] R/W Sync badcg Must be set to 2'b00 to enable the
PRBS verifier.
[13] R/W Enable Comma Detect Must be set to 1'b0 to enable the
PRBS verifier.
[11] R/W Enable Polarity Must be set to 1'b0 to enable the
PRBS verifier.
[10:8] R/W Word Aligner Size Specifies the word alignment size
using the encodings defined in the
previous table.
[7:0] R/W Word Aligner Pattern
[39:32]
Stores the high-order 8 bits of the
word aligner pattern as specified in
the previous table.
0xA2 [15:0] R/W Word Aligner Pattern
[31:16]
Stores the middle 16 bits of the word
aligner pattern as specified in the
previous table.
UG-01080
2015.01.19
Standard PCS Pattern Generators
12-27
Stratix V Transceiver Native PHY IP Core
Altera Corporation
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