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Feature #5294

open

break-out board for AMR modem riser

Added by laforge about 1 month ago. Updated 21 days ago.

Status:
In Progress
Priority:
Low
Assignee:
Category:
-
Target version:
-
Start date:
11/06/2021
Due date:
% Done:

80%

Spec Reference:

Description

It would be great to have a break-out board for the AMR_Modem_Riser so we can try to hook them up to a microcontroller emulating the AC-link interface (e.g. using SAM3S SSC).

The break-out board should have:
  • mechanical connector for AMR card
  • expose all analog and digital signals to 2.54mm headers
  • DC input for 5V (barrel? USB Vbus?)
    • jumper to +5VD
    • jumper to +5Vdual
  • onboard 5V -> 3.3V LDO
    • jumper to +3.3Vdual
    • jumper to +3.3VD
  • no +/- 12V on-board power supply, but at least some way to supply it externally
  • test points for attaching [scope, logic analyzer] probes to AC-link signals

Files

amr-breakout.png View amr-breakout.png 70 KB laforge, 11/17/2021 06:16 PM
Actions #1

Updated by laforge 21 days ago

  • Status changed from New to In Progress
  • % Done changed from 0 to 80

design files committed in https://git.osmocom.org/osmo-small-hardware/commit/?id=b76fb674e1174786b7d086adab45c38dbeb2b1a1 and 3 prototypes ordered from aisler.

Actions #2

Updated by laforge 21 days ago

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