From abdb51f63b936cacb7e09a582d9ac1dedca215a8 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Wed, 24 Apr 2019 19:03:27 +0200 Subject: add osmo-small-hardware slides --- 2019/osmodevcon2019-osmo_small_hardware/bgt384.jpg | Bin 0 -> 24235 bytes .../mpcie-breakout-v3-perspective.small.jpg | Bin 0 -> 532658 bytes .../mpcie-breakout-v3-top.small.jpg | Bin 0 -> 543632 bytes .../mv-uart-back.jpg | Bin 0 -> 61364 bytes .../mv-uart-front.jpg | Bin 0 -> 69789 bytes .../osmo-clock-conv-v1-top.jpg | Bin 0 -> 4015368 bytes .../osmo-clock-gen-v1-top.jpg | Bin 0 -> 4356562 bytes .../osmodevcon2019-osmo_small_hardware.adoc | 110 +++++++++++++++++++++ .../sfp-breakout.jpg | Bin 0 -> 1042966 bytes .../sfp-experimenter.jpg | Bin 0 -> 873635 bytes .../sfp-experimenter1.jpg | Bin 0 -> 193742 bytes .../tuf105_52.jpg | Bin 0 -> 24548 bytes 12 files changed, 110 insertions(+) create mode 100644 2019/osmodevcon2019-osmo_small_hardware/bgt384.jpg create mode 100644 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a/2019/osmodevcon2019-osmo_small_hardware/osmodevcon2019-osmo_small_hardware.adoc b/2019/osmodevcon2019-osmo_small_hardware/osmodevcon2019-osmo_small_hardware.adoc new file mode 100644 index 0000000..2d60ed6 --- /dev/null +++ b/2019/osmodevcon2019-osmo_small_hardware/osmodevcon2019-osmo_small_hardware.adoc @@ -0,0 +1,110 @@ +osmo-small-hardware.git updates +=============================== +:author: Harald Welte +:copyright: 2019 by Harald Welte (License: CC-BY-SA) +:backend: slidy +:max-width: 45em + + +== What is `osmo-small-hardware.git` + +* collection of small Open Source Hardware projects +* started in 2016 with `osmo-mv-uart` + `mpcie-breakout` +* expanded in 2018 with four more projects +* all projects OSHW +** most of them made available by sysmocom as alternative to DIY + +== `osmo-mv-uart` + +Dual USB-UART with selectable logic level voltage + +image::mv-uart-front.jpg[] + +== `osmo-mpcie-breakout` + +image::mpcie-breakout-v3-perspective.small.jpg[width="100%"] + +== `osmo-sfp-breakout` + +image::sfp-breakout.jpg[width="100%"] + +== `osmo-sfp-breakout` + +* expose the differential rx/tx pair as two SMA sockets each +** can be used to transmit differential signals e.g. from FPGA differential drivers +* give access to all auxiliary signals of a SFP(+) transceiver on a 2.54mm header + +== `osmo-sfp-experimenter` + +image::sfp-experimenter.jpg[width="100%"] + +== `osmo-sfp-experimenter` + +* like `osmo-sfp-breakout`, but +** onboard LVDS receiver +** onboard LVDS transmitter +** single-ended Rx/Tx via SMA sockets + + +== `osmo-sfp-experimenter` + +image::sfp-experimenter1.jpg[width="100%"] + +(thanks to Sylvain) + +== `osmo-clock-gen` + +* SI5351C software-programmable clock generator +* ATSAMD11 microcontroller on v1 +** to be upgraded to SAMD21 on v2 +* I2C EEPROM to store register values +* control via UART (@3.3V on 2.5mm jack) or USB +* all eight clock outputs available as U.FL or SMA +* 100x50 mm form-factor + +== `osmo-clock-gen` + +image::osmo-clock-gen-v1-top.jpg[width="100%"] + +== `osmo-clock-conv` + +* low phase noise, dual-output sine -> square converter +** based on https://www.analog.com/media/en/technical-documentation/data-sheets/6957fb.pdf[LTC6957-4] chip +** Additive jitter: 45 - 109 fS (RMS) +** Low Skew: 3ps typical +* 100x50 mm form-factor + +== `osmo-clock-conv` + +image::osmo-clock-conv-v1-top.jpg[width="100%"] + +== 100x50 mm form-factor + +Idea was to build several "clock blocks" in same PCB form factor + +* 100 mm width can be used in 3U 19" carrier for large quantity of boards: + +image::bgt384.jpg[] + +== 100x50 mm osmo-clock form-factor + +Idea was to build several "clock blocks" in same PCB form factor + +* alternatively, 1-4 boards slotted into this style of enclosure: + +image::tuf105_52.jpg[] + + +== Further Reading + +* https://git.osmocom.org/osmo-small-hardware/ +* https://osmocom.org/projects/mv-uart/wiki/Wiki +* https://osmocom.org/projects/mpcie-breakout/wiki +* https://osmocom.org/projects/osmo-clock-gen/wiki +* https://osmocom.org/projects/osmo-clock-conv/wiki +* https://osmocom.org/projects/misc-hardware/wiki/Sfp-breakout +* https://osmocom.org/projects/misc-hardware/wiki/Sfp-experimenter + +== EOF + +End of File diff --git a/2019/osmodevcon2019-osmo_small_hardware/sfp-breakout.jpg b/2019/osmodevcon2019-osmo_small_hardware/sfp-breakout.jpg new file mode 100644 index 0000000..e4f38aa Binary files /dev/null and b/2019/osmodevcon2019-osmo_small_hardware/sfp-breakout.jpg differ diff --git a/2019/osmodevcon2019-osmo_small_hardware/sfp-experimenter.jpg b/2019/osmodevcon2019-osmo_small_hardware/sfp-experimenter.jpg new file mode 100644 index 0000000..7cf8b21 Binary files /dev/null and b/2019/osmodevcon2019-osmo_small_hardware/sfp-experimenter.jpg differ diff --git a/2019/osmodevcon2019-osmo_small_hardware/sfp-experimenter1.jpg b/2019/osmodevcon2019-osmo_small_hardware/sfp-experimenter1.jpg new file mode 100644 index 0000000..3b76431 Binary files 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