AM68A: video streams

Hi Daria,

Daria Kiseleva said:

2) Can the Gigabit Ethernet connected to the MCU be selected as the boot 
source? 

Are you considering ethernet as the source for ROM boot mode or for TFTP boot?

Daria Kiseleva said:

Can the CPU use the MCU ethernet to copy video streams into the main 
memory and process them from there?

You can use custom application on the CPU to get frames from MCU Ethernet and push them to memory or to some processing software.

Daria Kiseleva said:

How fast is the interconnect between 
MCU and CPU? 

The interconnect can operate at gigabit rate (1Gbps), but there are some software constraints which limits the speed on R5 cores. Which CPU are you considering using for MCU Ethernet?

Regards,
Tanmay

Hi Daria,

Daria Kiseleva said:

1) How many video streams can the processor process in parallel? We plan 
to connect and store up to 16 IP cameras. As many of these as possible 
should also be displayed (split view). Where is the limit with FullHD 
video output? 

Are you planning to stream 16 Cameras together? May I know what is the resolution that you are targeting and what is the FPS?

Regards,

Nikhil

Hi Nikhil,

No, only 4-8 stream shall be displayed at once. The total
resolution for video output shall be 1080p30 (FullHD, 30 fps). Every
single camera has a smaller resolution (e.g. 960x540) in split views.

Thanks,

Daria

Hi Tanmay,

Tanmay Patil said:

Are you considering ethernet as the source for ROM boot mode or for TFTP boot?

In document SPRUJ28C, Table 4-37, only MCU_RGMII is mentioned. That's what you mean with ROM boot?

Can we bring up the MCU core and the CPU core with only MCU_RGMII and a combination of ROM boot and TFTP?
Can a running Linux on the CPU use the MCU-RGMII to update itself via LAN connection?

 

Tanmay Patil said:

Which CPU are you considering using for MCU Ethernet?

With CPU I mean the A72 cores of the AM68A(A72SS).
We changed the system design: no video streams over MCU-RGMII. Wejust want to use this port for maintaince of the whole system. (updates,backup of stored video data to external medium (no realtime required), etc.)
Is it possible to use the MCU-RGMII for this purpose?

Thanks,

Daria

Hi Daria,

Daria Kiseleva said:

No, only 4-8 stream shall be displayed at once. The total
resolution for video output shall be 1080p30 (FullHD, 30 fps). Every
single camera has a smaller resolution (e.g. 960x540) in split views

We could stream 8 streams in parallel in AM68A.

Regards,

Nikhil

Hi Tanmay,

Where did I can see, that the CPU can access the MCU_RGMII?
In document SPRUJ28C the table 3-91 descripe the connectivity matrix. In my opinion GIC is A72SS, C71SS, etc. (see Figure 1-1, top left corner).
But MCU-RGMII (MCU_CPSW) does contain a 'N' at GIC? What do I missing?

From a booted Linux in CPU (A72 cores), can we get access for periperial of the MCU like ADC, I2C, MCAN, ...? Where I can see it in the datasheet?

Thanks,

Daria

Hi Tanmay,

Does it work the same way with other peripherals (I2C etc.)?

Thanks,

Daria