SD Card Mux

Registered by Andy Doan on 2012-04-04

We've got a preliminary design for an SD card mux. We'll try and get some boards made and make this very useful tool a reality this cycle.

See notes at:
https://docs.google.com/a/linaro.org/document/d/1drYtJnkA_YmeiP_4yU-VfsU5a11etcyCE2rvJeFwsC4/edit

Blueprint information

Status:
Started
Approver:
Alexander Sack
Priority:
Medium
Drafter:
Dave Pigott
Direction:
Approved
Assignee:
Dave Pigott
Definition:
Approved
Series goal:
Accepted for trunk
Implementation:
Blocked
Milestone target:
None
Started by
Fathi Boudra on 2012-04-05

Related branches

Sprints

Whiteboard

Notes:
[zkrynicki, 2012-3-8] each SD card muxer must have unique serial number readable from the host. Without this they will be useless.
[pfefferz, 2012-3-20] No they won't. The current design just routes an SD card to both an SD card programmer and a target. I want each board to be hooked to a mother PC that acts as a buffer between the target under test and the outside world so we can streamline the interface between the test controller and the test nodes.
[2012/3/27] Good progress. Waiting for boards. Will move this onto 12.04.
[fboudra, 2012-04-27] Re-target to 2012.05 milestone.
[fboudra, 2012-06-06] Re-target to 2012.06 milestone.
[doanac, 2012-06-08] Proof of concept complete. waiting on next hw revision before continuing work
[fboudra, 2012-06-14] Set implementation to blocked.
[fboudra, 2012-06-29] Put back in the backlog.
[doanac, 2012-11-06] the remaining work will be tracked in other BP's

Meta:
Headline: Linaro and TinCanTools have created an SD Card mux!
Acceptance: An SD card mux that auto switches to target and host mode

(?)

Work Items

Work items:
Design board: DONE
Make schematic: DONE
Get schematic reviewed: DONE
[x0132446] Do layout: DONE
Prepare slide deck: DONE
[x0132446] Get first boards: DONE
Write justification: TODO
[x0132446] Assemble: DONE
[x0132446] Test: DONE
[pfefferz] Test first board: DONE
[pfefferz] Debug cmd error: DONE
[x0132446] Get second boards: DONE
[x0132446] Assemble second boards: DONE
[x0132446] Test second boards: DONE
Work with LAVA to integrate: INPROGRESS

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