Xilinx SMPTE 2022-5/6 Product Manual page 37

1. To calculate Media Packet Buffer Size,
*the maximum Media Packet Buffer Size is 65535 (0xFFFF)
2. To calculate the play out delay based on the obtained information.
To convert Playout Delay to 27 MHz clock ticks,
Follow the computation below to determine the FEC Base Address in the general space
and RTP Base Address per channel in the channel space (in bold).
Table 3-2: Look up Table for Size allocated Per Packet in the DDR
SMPTE 2022-5/6 Packet
Size allocated per Packet (Bytes)
Based on look up table
in the DDR for each channel (RTP).
3. Media Buffer Base Address for each channel can be set consecutively by,
4. FEC Buffer Base Address can be set after the media buffer allocation by,
Finally set FEC Buffer Pool Size (in bold) by computing:
For each channel,
LogiCORE IP SMPTE 2022-5/6 RX v4.0
PG033 October 1, 2014
1472
(Table 3-2) for size allocated per packet, compute size that allocated
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Chapter 3: Designing with the Core
Media/FEC
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