Altera 100G Interlaken MegaCore Function Instrukcja Użytkownika Pobierz pdf (Strona 68)

Signal Name Direction Width (Bits) Description

burst_max_in Input 4 Encodes the BurstMax parameter for the IP

core. The actual value of the BurstMax

parameter must be a multiple of 64 bytes. While

traffic is present, this input signal should

remain static. However, when no traffic is

present, you can modify the value of the burst_

max_in signal to modify the BurstMax value of

the IP core.

The 100G InterlakenIP core supports the

following valid values for this signal:

2: 128 bytes

4: 256 bytes

8: 512 bytes

burst_short_in Input 4 Encodes the BurstShort parameter for the IP

core.

The 100G Interlaken IP core supports the

following valid value for this parameter:

2: 64 bytes

In general, the presence of the BurstMin

parameter makes the BurstShort parameter

obsolete.

burst_min_in Input 4 Encodes the BurstMin parameter for the IP

core.

The IP core supports the following valid values

for this signal:

0: Disable optional enhanced scheduling. Altera

recommends you do not drive this value in

variations in dual segment mode. If you disable

enhanced scheduling, performance is non-

optimal.

2: 64 bytes

4: 128 bytes

The BurstMin parameter should have a value

that is less than or equal to half of the value of

the BurstMax parameter.

Altera recommends that you modify the value

of this input signal only when no traffic is

present on the TX user data interface. You do

not need to reset the IP core.

Real-Time Transmit Status Signals (Synchronous with tx_usr_clk)

5-10

100G Interlaken IP Core Interlaken Link and Miscellaneous Interface Signals

UG-01128

2015.05.04

Altera Corporation

100G Interlaken MegaCore Function Signals

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