Code Location

When designing a system there is a choice as to which hardware resources to use for each interface. In a multi-tile system the codebase needs to be informed as to which tiles to use for these hardware resources and associated code.

A series of defines are used to allow the programmer to easily move code between tiles. Arguably the most important of these are AUDIO_IO_TILE and XUD_TILE. Table 7 shows a full listing of these TILE defines.

Table 7 Tile defines

Define	Description	Default
AUDIO_IO_TILE	Tile on which I2S/TDM, ADAT Rx, S/PDIF Rx & mixer resides	0
XUD_TILE	Tile on which USB resides, including buffering for all USB interfaces/endppoints	0
MIDI_TILE	Tile on which MIDI resides	Same as AUDIO_IO_TILE
SPDIF_TX_TILE	Tile on which S/PDIF Tx resides	Same as AUDIO_IO_TILE
PDM_TILE	Tile on which PDM microphones resides	Same as AUDIO_IO_TILE
PLL_REF_TILE	Tile on which reference signal to CS2100 resides	Same as AUDIO_IO_TILE

Note

It should be ensured that the relevant port defines in the application XN file match the code location defines