IPSERIALLITE Altera, IPSERIALLITE Datasheet - Page 65

• Manufacturer Part Number: IPSERIALLITE
• Manufacturer: Altera

Specifications of IPSERIALLITE

• Lead Free Status / RoHS Status: Not Compliant

Specifications
Altera Corporation
August 2005
The Parameterize - SerialLite MegaCore function wizard manages this
choice for you. If you select to test packet size, then invalid packet size
choices are flagged as errors. If you select not to test packet size, you can
enter any packet size up to and including 256 bytes.
packet testing options for the priority data port.
Channel Multiplexing
Channel multiplexing allows a single SerialLite link to carry more than
one independent stream of data. Both the regular data port and the
priority data port support channel multiplexing.
Channel multiplexing can be useful for such structures as multi-queue
memories. Another use is in distinguishing system messages from
standard payload packets on the priority port.
Up to 256 channels can be multiplexed on the regular data port, and up to
16 channels can be multiplexed on the priority data port. You decide
independently for each port whether or not to enable channel
multiplexing.
Channel multiplexing tags a packet with a channel number. The channel
number is placed on the TADR or THADR bus for transmission, and is read
off of the RADR or RHADR bus on reception. No processing is done on the
channel number; the SerialLite MegaCore function simply passes the
address through to the other end of the link.
Packets to different channels on the same port cannot interrupt each
other. Once a packet for one channel has started, that packet must be
completed before a new packet for a different channel can be started.
Packets on the priority data port still interrupt packets on the regular data
port, regardless of channel multiplexing.
Enabled
Disabled
Table 3–19. Packet Testing Options (Priority Data Port Only)
Option
MegaCore Function Version 1.1.0
Logic is created to test incoming data for oversize packets. Oversize
packets are discarded. Maximum packet size choices must be a
multiple of the data bus width. This is the default setting.
No logic is created to test incoming data for oversize packets.
Oversize packets are not discarded, and are missing data. Any
maximum packet size up to and including 256 bytes can be
specified.
SerialLite MegaCore Function User Guide
Description
Table 3–19
shows the
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