Tool/software:
Hi Expert,
Is there layout guide for VOUT0_DATA0~23, HDMI, RGMII, eMMC, SD?
Thanks
Daniel
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Tool/software:
Hi Expert,
Is there layout guide for VOUT0_DATA0~23, HDMI, RGMII, eMMC, SD?
Thanks
Daniel
No - we do not have any layout guide for the interfaces mentioned. We have 2 hardware references you can use for guidance: SKAM69 and J784S4XEVM. I also recommend reviewing the Jacinto7 High Speed Guidelines application note (Link). It includes some good general recommendations for PCB routing.
Hi Robert
It is impossible to be exactly the same as EVM. If I want to refer to EVM, then I need to know what the Layout rule of EVM Layout follow is?
Thanks
Daniel
Section 1 of the previously reference document (Jacinto7 High Speed Guidelines) provides general PCB routing recommendations for all high speed signals - including the interfaces you mentioned. Recommendations include impedance control, use of solid GND planes, via suggestions, etc.
VOUT, RGMII, eMMC, and SD interfaces are sourced from LVCMOS drivers. They are recommended to be routed with 50-ohms SE traces. The processor web page includes IBIS models to simulate these interfaces with your PCB to determine any possible signal integrity/coupling issues (dependent on you PCB board materials, via plan, and overall trace lengths)
HDMI is NOT sourced from the processor, so please refer to data sheet of the HDMI transceiver you are using.