Altera Interlaken MegaCore Function - Manual (Page 24)

3–2 Chapter 3: Parameter Settings
General Parameters
Interlaken MegaCore Function June 2012 Altera Corporation
User Guide
The Interlaken MegaCore function supports only some combinations of number of
lanes and lane rate.
Table 3–1 shows the supported combinations.
1
The Interlaken parameter editor does not enforce the license restrictions. If you
specify a supported combination that your set of licenses does not allow, compilation
does not generate a programming file.
For information about the lane number and lane rate combinations supported by the
different Interlaken IP licenses, refer to
“Installation and Licensing” on page 1–4 .
Lane Rate
The Lane rate parameter specifies the data rate on each lane. All lanes have the same
data rate.
The Interlaken MegaCore function supports only certain combinations of number of
lanes and lane rate. Refer to
Table 3–1 . For information about the device support for
different combinations, refer to Table 1–3 on page 1–3 .
1
The Interlaken parameter editor does not enforce the license restrictions. If you
specify a supported combination that your set of licenses does not allow, compilation
does not generate a programming file.
For information about the lane number and lane rate combinations supported by the
different Interlaken IP licenses, refer to
“Installation and Licensing” on page 1–4 .
Number of Words in Meta Frame
The Meta frame length in words parameter specifies the length of the meta frame, in
64-bit (8-byte) words. In the Interlaken specification, this parameter is called the
MetaFrameLength parameter.
Smaller values for this parameter shorten the time to achieve lock. Larger values
reduce overhead while transfering data, after lock is achieved. For information about
achieving lock, refer to
Appendix A, Initializing the Interlaken MegaCore Function .
Exclude Transceiver
Turn on the Exclude transceiver parameter to specify that your Interlaken MegaCore
function does not include an HSIO block. By default, this parameter is turned off.
Table 3–1. Supported Combinations of Number of Lanes and Lane Rate
Number of Lanes
Lane Rate (Gbps)
3.125 6.25 6.375 10.3125
4 v v v —
8 v v v —
10 — v v —
12 — v v v
20 — v v —