Xilinx RocketIO X User Manual page 37

Primitive Attributes
Table 1-5: RocketIO X Transceiver Attributes (Continued)
Attribute
CLK_COR_SEQ_2_MASK[3:0]
CLK_COR_SEQ_2_USE
CLK_COR_SEQ_DROP
CLK_COR_SEQ_LEN
CLK_CORRECT_USE
COMMA_10B_MASK[9:0]
DEC_MCOMMA_DETECT
DEC_PCOMMA_DETECT
DEC_VALID_COMMA_ONLY
RocketIO™ X Transceiver User Guide
UG035 (v1.5) November 22, 2004
Type
4-bit Each bit of the mask determines if that particular sequence is
vector detected regardless of its value. If bit 0 is High, then
CLK_COR_SEQ_2_1 is matched regardless of its value.
Boolean FALSE/TRUE Control use of second clock correction sequence.
FALSE: Clock correction uses only one clock correction sequence
defined by CLK_COR_SEQ_1_1 ... 4, or one 8-byte sequence defined
by CLK_COR_SEQ_1_X and CLK_COR_SEQ_2_X in combination.
TRUE: Clock correction uses two clock correction sequences
defined by CLK_COR_SEQ_1_1 ... 4 and CLK_COR_SEQ_2_1 ... 4,
as further constrained by CLK_COR_SEQ_LEN.
Boolean TRUE/FALSE. When asserted TRUE, the clock correction mode is
via idle removal. When FALSE, the clock correction mode is via idle
removal or insertion.
Note:
This attribute must be set to FALSE.
Integer Integer (1, 2, 3, 4, 8) that defines the length of the sequence the
transceiver matches to detect opportunities for clock correction. It
also defines the size of the correction, since the transceiver executes
clock correction by repeating or skipping entire clock correction
sequences.
Boolean TRUE/FALSE controls the use of clock correction logic.
FALSE: Permanently disable execution of clock correction (rate
matching). Clock RXUSRCLK must be frequency-locked with
RXRECCLK in this case.
TRUE: Enable clock correction (normal mode).
10-bit These define the mask that is ANDed with the incoming
vector serial-bit stream before comparison against
PCOMMA_10B_VALUE and MCOMMA_10B_VALUE.
Boolean TRUE/FALSE controls the raising of per-byte flag
RXCHARISCOMMA on minus-comma.
Boolean TRUE/FALSE controls the raising of per-byte flag
RXCHARISCOMMA on plus-comma.
Boolean TRUE/FALSE controls the raising of RXCHARISCOMMA on an
invalid comma.
FALSE: Raise RXCHARISCOMMA on:
xxx1111100 (if DEC_PCOMMA_DETECT is TRUE)
and/or on:
xxx0000011 (if DEC_MCOMMA_DETECT is TRUE)
or on 8B/10B translation commas
regardless of the settings of the xxx bits.
TRUE: Raise RXCHARISCOMMA only on valid characters that are
in the 8B/10B translation.
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