SAI/I2S Driver for the KL27Z

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SAI/I2S Driver for the KL27Z

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andrewdeliso
Contributor IV

I am attempting to build an audio application using the I2S bus on the FRDM-KL27Z board.  The KSDK v2.0 doesn't have a driver for the SAI/I2S bus other that the flexIO.  Is one planned?  Or is it not supported?

 

Thanks.

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andrewdeliso
Contributor IV

Hi Xiangjun,

I got this table from the rep.  It explains the differences.  I have started the process of porting the sai drivers to the KLK27Z.

The KL27Z devices in red below with 128K or 256K of Flash include one I2S port.  The 32K/64K Flash devices do not.

MK Part Number

Total Flash Memory (KB)

SRAM (KB)

Pin Count

Package

I2S

MKL27Z32VDA4

32

8

36

XFBGA

-

MKL27Z32VFM4

32

8

32

QFN

-

MKL27Z32VFT4

32

8

48

QFN

-

MKL27Z32VLH4

32

8

64

LQFP

-

MKL27Z32VMP4

32

8

64

MAPBGA

-

MKL27Z64VDA4

64

16

36

XFBGA

-

MKL27Z64VFM4

64

16

32

QFN

-

MKL27Z64VFT4

64

16

48

QFN

-

MKL27Z64VLH4

64

16

64

LQFP

-

MKL27Z64VMP4

64

16

64

MAPBGA

-

MKL27Z128VFM4

128

32

32

QFN

1

MKL27Z128VFT4

128

32

48

QFN

1

MKL27Z128VLH4

128

32

64

LQFP

1

MKL27Z128VMP4

128

32

64

MAPBGA

1

MKL27Z256VFM4

256

32

32

QFN

1

MKL27Z256VFT4

256

32

48

QFN

1

MKL27Z256VLH4

256

32

64

LQFP

1

MKL27Z256VMP4

256

32

64

MAPBGA

1

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andrewdeliso
Contributor IV

If its not there, why do the data sheets and reference manual have that component?  I am already into prototype run of boards so changing parts is not an option.

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xiangjunrong
Contributor IV

Hi, Andrew,

I have downloaded the reference Manual, I read the RM carefully, but I do not see there is I2S or SAI module, I do not see the pin assignment for the I2S module in the Chapter 10 Pinouts and Packaging in the KL27P64M48SF2RM.pdf file. But the diagram of KL27Z  on the website does show that there is I2S module, I am also confused.

can you tell me the Reference manual you referred to? which pins are I2S pins for example bit clock/frame clock/data pins for both receiver and transmitter in your RM?

The Kl27 do have FlexIO which can simulate the I2S timing, but we do not discuss the case.

I am sorry if I am wrong.

BR

Xiangjun Rong

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andrewdeliso
Contributor IV

Hi Xiangjun Rong,

On Rev. 5 of the datasheet:

pastedImage_0.png

And in 01/2016 version of the reference manual:

pastedImage_2.png

pastedImage_3.png

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xiangjunrong
Contributor IV

Hi, Andrew,

I apologize for the wrong information, the Kl27Z does have SAI module. I have downloaded the latest revision 5 of Reference manual of KL27, it says that Kl27 has SAI module exactly. But the revision 3 of reference manual of Kl27 I had does not mention any SAI module. I suspect that is why the software  team does not develop code for the SAI module.

Regarding the driver of SAI, I think you can download the SAI driver from the other chip for example Kl33/kl36, and copy the fsl_sai.c and fsl_sai.h code to the C:\Freescale\KSDK2.0_KL27\devices\MKL27Z644\drivers, it is okay.

Hope it can help you.

BR

Xiangjun Rong

828 Views
andrewdeliso
Contributor IV

Hi Xiangjun,

I got this table from the rep.  It explains the differences.  I have started the process of porting the sai drivers to the KLK27Z.

The KL27Z devices in red below with 128K or 256K of Flash include one I2S port.  The 32K/64K Flash devices do not.

MK Part Number

Total Flash Memory (KB)

SRAM (KB)

Pin Count

Package

I2S

MKL27Z32VDA4

32

8

36

XFBGA

-

MKL27Z32VFM4

32

8

32

QFN

-

MKL27Z32VFT4

32

8

48

QFN

-

MKL27Z32VLH4

32

8

64

LQFP

-

MKL27Z32VMP4

32

8

64

MAPBGA

-

MKL27Z64VDA4

64

16

36

XFBGA

-

MKL27Z64VFM4

64

16

32

QFN

-

MKL27Z64VFT4

64

16

48

QFN

-

MKL27Z64VLH4

64

16

64

LQFP

-

MKL27Z64VMP4

64

16

64

MAPBGA

-

MKL27Z128VFM4

128

32

32

QFN

1

MKL27Z128VFT4

128

32

48

QFN

1

MKL27Z128VLH4

128

32

64

LQFP

1

MKL27Z128VMP4

128

32

64

MAPBGA

1

MKL27Z256VFM4

256

32

32

QFN

1

MKL27Z256VFT4

256

32

48

QFN

1

MKL27Z256VLH4

256

32

64

LQFP

1

MKL27Z256VMP4

256

32

64

MAPBGA

1

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xiangjunrong
Contributor IV

Hi, Andrew,

Thank you for providing the table and tell me the information that only Kl27Z with 128/256K flash has I2S interface.

BR

Xiangjun Rong

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Alice_Yang
NXP TechSupport
NXP TechSupport

Hello Andrew,

If the ksdk2.0 have not the SAI driver, you can use the KSDK1.3,

it have "fsl_sai"

pastedImage_0.pngf

Hope it helps


Have a great day,
Alice

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andrewdeliso
Contributor IV

Hi Alice,

I looked at the v1.3 SDK.  Is there a plan to port this driver to 2.0?  Also the 1.3 SDK has a feature count of 0, has this driver been tested on this platform?

./platform/devices/MKL27Z644/include/MKL27Z644_features.h:224:#define FSL_FEATURE_SOC_I2S_COUNT (0)

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xiangjunrong
Contributor IV

Hi, Andrew,

It seems that the KL27 does not have SAI peripheral, that is why that the SDK2.0 of KL27 does not include the SAI driver. But the Kl27 has flexIO, it is said that it can simulate the SAI timing, but I do not know the performance.

can you select the other Kinetis processor which has SAI module for example Kinetis K family?

Hope it can help you.

BR

Xiangjun Rong

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