Usage of the universal Parallel Port (uPP) and the Host-Port Interface (UHPI) on OMAP-L138 simultaneously

Friedrich Sanzi

Other Parts Discussed in Thread: OMAP-L138

Hello,

I have some questions regarding the usage of the universal Parallel Port (uPP) and the Host-Port Interface (UHPI) on OMAP-L138.

Is it possible to apply uPP and UHPI simultaneously? In our application we want the uPP to operate in 8 bit mode.
The data lines UHPI_HD of the UHPI and UPP_D of the uPP share the same pins on OMAP-L138. Therefore, we have to use the
UPP_XD data lines for the uPP interface. The data lines UPP_XD[0..7] are already reserved in our application for another
interface. Can the uPP operate in 8 bit mode processing the data lines UPP_XD[8..15]? Do we have to consider further conditions
on this configuration?

Are there other possibilities to have running uPP and UHPI simultaneously?

Thanks in advance.

Regards,
Friedrich

over 9 years ago

0 Sivaraj Kuppuraj over 9 years ago

TI__Mastermind 35645 points

Hi,

We will work on this and will let you know the update shortly.

Thanks & regards,
Sivaraj K

0 Titusrathinaraj Stalin over 9 years ago

TI__Guru** 116100 points

Dear Friedrich,
You can't use the HPI and uPP peripheral simultaneously as its shared the same pins each other. You can use either any one of peripheral at a time.

0 Friedrich Sanzi over 9 years ago in reply to Titusrathinaraj Stalin

Prodigy 185 points

Dear Titus,

are the channel B pins and the XData pins of the uPP peripheral shared with the pins of the HPI peripheral?

Thanks in advance.

Regards.
Friedrich

0 Titusrathinaraj Stalin over 9 years ago in reply to Friedrich Sanzi

TI__Guru** 116100 points

Channel B pins (start,clock,wait,enable) were not shared with HPI but data pins.
HPI and uPP's data pins were shared together, so we can't use uPP and HPI parallely.

Please use our PINMUX utility to check the availability and collision between HPI and uPP.

C:\ti\mcsdk_1_01_00_02\host-tools\pinmux_utils\windows\bin\TI Pin Multiplex Utility.exe

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Usage of the universal Parallel Port (uPP) and the Host-Port Interface (UHPI) on OMAP-L138 simultaneously