hi,
i try to drive an LCD with i2s module. i use lpc2478 mcu.
Mcu datasheet says it has 3 i2s i2s data pin. Two of these pins are
being used by the lcd module and i could no find the third one.
it could be very nice if somebody know which pin is the third i2s data
pin (also there is no explanation about that misterious pin).
regards
Mehmet Riza OZ
I2S with LCD
Started by ●January 12, 2009
Reply by ●January 12, 20092009-01-12
On Mon, 12 Jan 2009 13:18:19 -0000, you wrote:
>hi,
>
>i try to drive an LCD with i2s module. i use lpc2478 mcu.
>Mcu datasheet says it has 3 i2s i2s data pin. Two of these pins are
>being used by the lcd module and i could no find the third one.
>
>it could be very nice if somebody know which pin is the third i2s data
>pin (also there is no explanation about that misterious pin).
>
>regards
>
>Mehmet Riza OZ
I think you are confusing I2S with I2C. I2S is for audio
>hi,
>
>i try to drive an LCD with i2s module. i use lpc2478 mcu.
>Mcu datasheet says it has 3 i2s i2s data pin. Two of these pins are
>being used by the lcd module and i could no find the third one.
>
>it could be very nice if somebody know which pin is the third i2s data
>pin (also there is no explanation about that misterious pin).
>
>regards
>
>Mehmet Riza OZ
I think you are confusing I2S with I2C. I2S is for audio
Reply by ●January 12, 20092009-01-12
Hi,
No i do not confuse. :)
i just want to make a HDMI pattern generator using lpc2478. I also
have to produce IIS (sound) signals. When i produce the frames in
24bit rgb format i use lcd module of the mcu. But the problem is the
two IIS module data pins are the same pins with the lcd module's pins.
Datasheet says there are three IIS data pin but i could not the third
one. i think at the first message i could not explain my problem
clearly.
regards
--- In l..., Mike Harrison wrote:
>
> On Mon, 12 Jan 2009 13:18:19 -0000, you wrote:
>
> >hi,
> >
> >i try to drive an LCD with i2s module. i use lpc2478 mcu.
> >Mcu datasheet says it has 3 i2s i2s data pin. Two of these pins
are
> >being used by the lcd module and i could no find the third one.
> >
> >it could be very nice if somebody know which pin is the third i2s
data
> >pin (also there is no explanation about that misterious pin).
> >
> >regards
> >
> >Mehmet Riza OZ
>
> I think you are confusing I2S with I2C. I2S is for audio
>
No i do not confuse. :)
i just want to make a HDMI pattern generator using lpc2478. I also
have to produce IIS (sound) signals. When i produce the frames in
24bit rgb format i use lcd module of the mcu. But the problem is the
two IIS module data pins are the same pins with the lcd module's pins.
Datasheet says there are three IIS data pin but i could not the third
one. i think at the first message i could not explain my problem
clearly.
regards
--- In l..., Mike Harrison wrote:
>
> On Mon, 12 Jan 2009 13:18:19 -0000, you wrote:
>
> >hi,
> >
> >i try to drive an LCD with i2s module. i use lpc2478 mcu.
> >Mcu datasheet says it has 3 i2s i2s data pin. Two of these pins
are
> >being used by the lcd module and i could no find the third one.
> >
> >it could be very nice if somebody know which pin is the third i2s
data
> >pin (also there is no explanation about that misterious pin).
> >
> >regards
> >
> >Mehmet Riza OZ
>
> I think you are confusing I2S with I2C. I2S is for audio
>
Reply by ●January 13, 20092009-01-13
--- In l..., "Mehmet" wrote:
>
> Hi,
>
> No i do not confuse. :)
> i just want to make a HDMI pattern generator using lpc2478. I also
> have to produce IIS (sound) signals. When i produce the frames in
> 24bit rgb format i use lcd module of the mcu. But the problem is the
> two IIS module data pins are the same pins with the lcd module's pins.
> Datasheet says there are three IIS data pin but i could not the third
> one. i think at the first message i could not explain my problem
> clearly.
>
> regards
Yes, you do confuse, but the Data sheet and the User Guide tell
different stories.
The data sheet says:
http://www.standardics.nxp.com/products/lpc2000/datasheet/lpc2478.pdf
Page 5 3 x I2SRX
3 x I2STX
The User Guide says:
http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/user.manual.lpc24xx.pdf
Page 11 I2SRX_CLK
I2STX_CLK
I2SRX_WS
I2STX_WS
I2SRX_SDA
I2STX_SDA
There are only two I2S devices each with three signal pins.
don
>
> Hi,
>
> No i do not confuse. :)
> i just want to make a HDMI pattern generator using lpc2478. I also
> have to produce IIS (sound) signals. When i produce the frames in
> 24bit rgb format i use lcd module of the mcu. But the problem is the
> two IIS module data pins are the same pins with the lcd module's pins.
> Datasheet says there are three IIS data pin but i could not the third
> one. i think at the first message i could not explain my problem
> clearly.
>
> regards
Yes, you do confuse, but the Data sheet and the User Guide tell
different stories.
The data sheet says:
http://www.standardics.nxp.com/products/lpc2000/datasheet/lpc2478.pdf
Page 5 3 x I2SRX
3 x I2STX
The User Guide says:
http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/user.manual.lpc24xx.pdf
Page 11 I2SRX_CLK
I2STX_CLK
I2SRX_WS
I2STX_WS
I2SRX_SDA
I2STX_SDA
There are only two I2S devices each with three signal pins.
don
Reply by ●January 13, 20092009-01-13
Hi,
i may be understand something wrong but. At the page 15 (2478's block
diagram) says it has three ii2_rx and iis_tx pins. That made me think
in that way.
regards
Mehmet Riza OZ
--- In l..., "donhamilton2002"
wrote:
>
> --- In l..., "Mehmet" wrote:
> >
> > Hi,
> >
> > No i do not confuse. :)
> > i just want to make a HDMI pattern generator using lpc2478. I
also
> > have to produce IIS (sound) signals. When i produce the frames in
> > 24bit rgb format i use lcd module of the mcu. But the problem is
the
> > two IIS module data pins are the same pins with the lcd module's
pins.
> > Datasheet says there are three IIS data pin but i could not the
third
> > one. i think at the first message i could not explain my problem
> > clearly.
> >
> > regards
> >
> > Yes, you do confuse, but the Data sheet and the User Guide tell
> different stories.
>
> The data sheet says:
>
http://www.standardics.nxp.com/products/lpc2000/datasheet/lpc2478.pdf
> Page 5 3 x I2SRX
> 3 x I2STX
>
> The User Guide says:
>
http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/
user.manual.lpc24xx.pdf
>
> Page 11 I2SRX_CLK
> I2STX_CLK
> I2SRX_WS
> I2STX_WS
> I2SRX_SDA
> I2STX_SDA
>
> There are only two I2S devices each with three signal pins.
>
> don
>
i may be understand something wrong but. At the page 15 (2478's block
diagram) says it has three ii2_rx and iis_tx pins. That made me think
in that way.
regards
Mehmet Riza OZ
--- In l..., "donhamilton2002"
wrote:
>
> --- In l..., "Mehmet" wrote:
> >
> > Hi,
> >
> > No i do not confuse. :)
> > i just want to make a HDMI pattern generator using lpc2478. I
also
> > have to produce IIS (sound) signals. When i produce the frames in
> > 24bit rgb format i use lcd module of the mcu. But the problem is
the
> > two IIS module data pins are the same pins with the lcd module's
pins.
> > Datasheet says there are three IIS data pin but i could not the
third
> > one. i think at the first message i could not explain my problem
> > clearly.
> >
> > regards
> >
> > Yes, you do confuse, but the Data sheet and the User Guide tell
> different stories.
>
> The data sheet says:
>
http://www.standardics.nxp.com/products/lpc2000/datasheet/lpc2478.pdf
> Page 5 3 x I2SRX
> 3 x I2STX
>
> The User Guide says:
>
http://www.standardics.nxp.com/support/documents/microcontrollers/pdf/
user.manual.lpc24xx.pdf
>
> Page 11 I2SRX_CLK
> I2STX_CLK
> I2SRX_WS
> I2STX_WS
> I2SRX_SDA
> I2STX_SDA
>
> There are only two I2S devices each with three signal pins.
>
> don
>
