We want to design a customized Thor(T5000) carrier board which has three 10G XFI and one 10G USXGMII.
[Question1]
From page 43.Table 7-4 of “Jetson_Thor_Series_Modules_DesignGuide_DG12084001_v1.2.pdf”, the MGBE can support 4 XFI. Can we change 1 XFI to USXGMII ?
[Question2]
There are 4 XFI(XFI0 to XFI3) in “P3971_B02_Concept_schematics.pdf”, we can find the reset and interrupt pins of XFI0 and XFI3, but can’t find these two pins of XFI1 and XFI2. Which pins are suitable for XFI1 and XFI2 ?
[Question3]
In “P3971_B02_Concept_schematics.pdf”, the XFI2_MDIO uses for CAM_TE_RSV, and XFI1_MDIO uses for M2E_AP_WAKE_BT. Do we need to use another pins for these two pins ?
v1.3 of the Jetson Thor Design Guide released in mid-December: Jetson Thor Series Modules Interface Design Guide
The P3971 schematics are for Orin, not Thor. Jetson Thor carrier board design files are here: Jetson Thor Developer Kit Carrier Board Design Files
Currently there is no USXGMII support on Thor: Use USXGMII in Thor
After checking the new files, I modify the questions
[Question1]
From page 43.Table 7-4 of “jetson-thor-series-modules-designguide-dg12084001-v1.3.pdf”, can we use 4 XFI ?
[Question2]
There are 4 XFI(XFI0 to XFI3) in “P4071_A02_Concept_schematics.pdf”, we can find the reset and interrupt pins of XFI0 and XFI3, but can’t find these two pins of XFI1 and XFI2. Which pins are suitable for XFI1 and XFI2 ?
[Question3]
In “P4071_A02_Concept_schematics.pdf”, XFI1_MDIO uses for M2E_AP_WAKE_BT. Do we need to use another pin for this pins ?
[Question1]
From page 43.Table 7-4 of “jetson-thor-series-modules-designguide-dg12084001-v1.3.pdf”, can we use 4 XFI ?
If you have the T5000 module, there are 4x XFI available.
[Question2]
There are 4 XFI(XFI0 to XFI3) in “P4071_A02_Concept_schematics.pdf”, we can find the reset and interrupt pins of XFI0 and XFI3, but can’t find these two pins of XFI1 and XFI2. Which pins are suitable for XFI1 and XFI2 ?
The reference design shows a QSFP connector so it only has one set of QSFP_RESET_N and QSFP_INT_N. Any available GPIOs in the design may be used for the other XFI resets and interrupts and should be level-shifted and pulled up (INT case) as needed.
[Question3]
In “P4071_A02_Concept_schematics.pdf”, XFI1_MDIO uses for M2E_AP_WAKE_BT. Do we need to use another pin for this pins ?
Simlarly to the XFI resets and interrupts, any other available GPIO should be used for M2E_AP_WAKE_BT.
When I use XFI with Orin, I can follow the guideline to let the XFI work.
But I can’t find it for Thor, where can I get the guideline ?
There is no support for XFI in software. Please follow the suggested design as devkit.