Revision History

Kria SOM Carrier Card Design Guide (UG1091)

Document ID
UG1091
Release Date
2023-11-03
Revision
1.5 English

The following table shows the revision history for this document.

Section Revision Summary
11/03/2023 Version 1.5
General Added KD24 SOM information to guide. Removed the connector specific pinouts and signal naming conventions. See the specific SOM data sheet for that information.
Introduction Removed the K26 SOM Block Diagram. See the Kria K26 SOM Data Sheet (DS987).
SOM Connector Overview Added Connector Compatibility Across Kria SOMs discussion.
SOM Connector Power Pins Removed the SOM Power Rails table and linked to the SOM specific data sheets.
5/25/2023 Version 1.4
General

Updated information on MIO banks for MIO[31] (MIO31_PMU_GPI)

and MIO[35] (MIO35_PMU_GPO).

Sideband Signals Updated the PS_POR_L signal description.
Board to Board Connector PCB Layout for K26 SOM Updated to clarify images in Figure 1 and Figure 2.
References Updated reference section.
7/27/2022 Version 1.3
General Added reference to the REF-226081 Samtec connector throughout data sheet.
SOM Configuration and Control Signals Updated descriptions in Power-on Reset (PS_POR_B) Signal and PS_POR_L.
Power Management Signals Updated the PWRGD_LPD_M2C signal description.
3/16/2022 Version 1.2
Introduction Updated the K26 SOM Block Diagram
Signal Naming Conventions Added Table 3: Legend for Pin Types. Added signal to connector mapping using XDC file discussion.
SOM240_1 Signal Names and Descriptions Added the pin type column and updated the descriptions for B28 (MIO35), B29 (MIO36), B30 (MIO37), C30 (MIO29), and C31 (MIO30), and C32 (MIO31).
SOM240_2 Connector Pinout Updated A4 description.
SOM240_2 Signal Names and Descriptions Added the pin type column.
Supported I/O Standards Added power-up and configuration information.
PS-GTR Transceivers Added additional transceiver details.
GTH Transceivers (K26 SOM only) Added additional transceiver details.
Transceiver Reference Clocks Added additional transceiver details.
SOM Configuration and Control Signals Clarifying edits to PS_ERROR_OUT Signal, PS_ERROR_STATUS Commands.
Power Management Signals Updated descriptions on the signals in this section.
SOM MIO Design Considerations Updated mapping instructions and bank diagrams.
K26 SOM Mechanical Dimensions Added clarifying edits to the Figure 1 mechanical drawing.
7/23/2021 Version 1.1
Introduction Updated the K26 SOM Block Diagram.
SOM240_1 Connector Pinout Updated MIO35_WD_OUT and MIO26.
SOM240_1 Signal Names and Descriptions Updated descriptions in table.
SOM240_2 Connector Pinout Corrected errors in table.
SOM240_2 Signal Names and Descriptions Updated descriptions in table.
Supported I/O Standards Added description of XCK26 device.
SOM I/O Timing Model Added information on designing with trace length and signal delays, and removed Table 7: K26 SOM PCB Signal Delays by I/O Bank
Sideband Signals Added PS_REF_CLK and PS_PAD_I/O.
SOM Connector Power Pins Updated the VBATT recommended conditions in SOM Power Rails. Added discussion on connecting unused I/O bank VCCO pins.
Power Management Added further details on power management and PWRGD signals.
SOM Power Estimation Added link to Kria K26 SOM Thermal Design Guide (UG1090).
Carrier Card Board to Board Connector Placement Guideline for K26 SOM Corrected Samtec mating connector model (ADM6–60–01.5–L–4–2–A).
References Added link to Kria K26 SOM Thermal Design Guide (UG1090).
4/20/2021 Version 1.0
Initial release. N/A