User manual

22.8.2018 Pmod I2S2 Reference Manual [Reference.Digilentinc]
https://reference.digilentinc.com/reference/pmod/pmodi2s2/reference-manual 7/9
32 (*Slave Mode Only) SSM *8.192 *16.384 *12.288 *24.576
44.1 SSM 11.289 22.579 16.934 33.868
48 SSM 12.288 24.576 18.432 36.864
Sample Rate (kHz ()) Speed Mode MCLK (MHz ()) MCLK (MHz ())
128x 256x 192x 384x
88.2 DSM 11.289 22.579 16.934 33.868
96 DSM 12.288 24.576 18.432 36.864
To set up a simple 44.1 kHz () audio passthrough, three control signals need to be generated by the host system board.
1. A master clock (MCLK) at a frequency of approximately 22.579 MHz ().
2. A serial clock (SCLK ()), which fully toggles once per 8 MCLK periods.
3. A Left/Right Word Select signal, which fully toggles once per 64 SCLK () periods.
The Pmod I2S2's Master/Slave select jumper (JP1) should be placed into the Slave (SLV) position.
Each of these control signals should be provided to the appropriate pin on both the top and bottom rows of the Pmod I2S2.
The ADOUT_SDIN pin should be driven by the ADIN_SDOUT signal.
See the I2S Overview section for more information on the timing of these signals.
The schematics of the Pmod I2S2 are available here (https://reference.digilentinc.com/lib/exe/fetch.php?
tok=685ba2&media=https%3A%2F%2Freference.digilentinc.com%2F_media%2Freference%2Fpmod%2Fpmodi2s2%2Fpmodi2s2_sch.pdf).
Additional information about the line-in and line-out converters (CS5343 and CS4344, respectively) including master/slave modes and
specific timings of the chips can be found by checking out their datasheets here: CS5343 (https://www.cirrus.com/products/cs5343-44/),
CS4344 (https://www.cirrus.com/products/cs4344-45-48/).
More specific information about how to use the Pmod I2S2 can be found by checking out the additional resources on the Pmod I2S2
Resource Center (https://reference.digilentinc.com/reference/pmod/pmodi2s2/start#additional_resources). Example code demonstrating how
to get information from the PmodI2S2 can be found on its Resource Center here
(https://reference.digilentinc.com/reference/pmod/pmodi2s2/start#example_projects).
If you have any questions or comments about the Pmod I2S2, feel free to post them under the appropriate section (“Add-on Boards”) of
the Digilent Forum (https://forum.digilentinc.com/).
rm (https://reference.digilentinc.com/tag/rm?do=showtag&tag=rm), doc (https://reference.digilentinc.com/tag/doc?do=showtag&tag=doc),
pmodi2s2 (https://reference.digilentinc.com/tag/pmodi2s2?do=showtag&tag=pmodi2s2)
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