Primitive Attributes; Table 1-5: Rocketio X Transceiver Attributes - Xilinx RocketIO X User Manual

Primitive Attributes

Primitive Attributes
The primitives also contain attributes set by default to specific values controlling each
specific primitive's protocol parameters. Included are channel-bonding settings (for
primitives supporting channel bonding), and clock correction sequences.
brief description of each attribute. See
(Table

Table 1-5: RocketIO X Transceiver Attributes

Attribute
ALIGN_COMMA_WORD
CHAN_BOND_64B66B_SV
CHAN_BOND_LIMIT
CHAN_BOND_MODE
CHAN_BOND_ONE_SHOT
RocketIO™ X Transceiver User Guide
UG035 (v1.5) November 22, 2004
F-1through Table F-9) for the default values of each primitive.
Type
Integer Integer (1, 2, 4) controls the alignment of detected commas within
the transceiver's 4-byte wide data path. See
Boolean TRUE/FALSE. This signal is reserved for future use and must be
held to FALSE.
Integer Integer 1-63 that defines maximum number of bytes a slave receiver
can read following a channel bonding sequence and still
successfully align to that sequence.
Note:
This attribute must be set to 16.
String STRING OFF, MASTER, SLAVE_1_HOP, SLAVE_2_HOPS
OFF: No channel bonding involving this transceiver.
MASTER: This transceiver is master for channel bonding. Its
CHBONDO port directly drives CHBONDI ports on one or more
SLAVE_1_HOP transceivers.
SLAVE_1_HOP: This transceiver is a slave for channel bonding.
SLAVE_1_HOP's CHBONDI is directly driven by a MASTER
transceiver CHBONDO port. SLAVE_1_HOP's CHBONDO port
can directly drive CHBONDI ports on one or more SLAVE_2_HOPS
transceivers.
SLAVE_2_HOPS: This transceiver is a slave for channel bonding.
SLAVE_2_HOPS CHBONDI is directly driven by a SLAVE_1_HOP
CHBONDO port.
Boolean FALSE/TRUE that controls repeated execution of channel bonding.
FALSE: Master transceiver initiates channel bonding whenever
possible (whenever channel-bonding sequence is detected in the
input) as long as input ENCHANSYNC is High and RXRESET is
Low.
TRUE: Master transceiver initiates channel bonding only the first
time it is possible (channel bonding sequence is detected in input)
following negated RXRESET and asserted ENCHANSYNC. After
channel-bonding alignment is done, it does not occur again until
RXRESET is asserted and negated, or until ENCHANSYNC is
negated and reasserted.
Slave transceivers should always have CHAN_BOND_ONE_SHOT
set to FALSE.
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Appendix F, "Modifiable Attributes"
Description
R
Table 1-5 shows a
Table 2-9, page 55.
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