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|-----------|-------------------------|-------------------------------|
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| Data ports | Number: 18 <br /> Speed: 1 and/or 10 Gbps | |
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| Mgmt ports| 2 Ethernet (SFP cage + simple RJ45) <br /> USB Mini-B | **TB-I: standard/common management interfaces <br /> on Ethernet switches (USB Mini-B, RS232, others)** |
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| CLK IOs | Type: SMA <br />IN_1: 10 MHz <br />IN_2: 1 PPS <br />IN_3: AUX <br /> OUT_1: 10 MHz<br /> OUT_2: 1 PPS <br /> OUT_3: 62.5 MHz <br /> OUT_4: AUX (abscal) | Check how SMA and AUX IN/OUTSMA can fit <br /> IN_3 AUX could be used in the future for internal TIC... |
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| CLK IOs | Type: SMA <br />IN_1: 10 MHz <br />IN_2: 1 PPS <br />IN_3: AUX <br /> OUT_1: 10 MHz<br /> OUT_2: 1 PPS <br /> OUT_3: 62.5 MHz <br /> OUT_4: AUX (abscal) <br /> (all switchable between High-Z and 50 Ohm) | Check how SMA and AUX IN/OUTSMA can fit <br /> IN_3 AUX could be used in the future for internal TIC... <br /> **TBI: standardization of voltage levels and rise time, possibility to disable inputs to improve noise** |
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| Port LEDs | LED_1: Link / WR mode / Calib <br /> LED_2: Synced / Activity | |
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| Status display | Small/standard OLED | OLED replaces status LEDs <br /> **TBI: what displays are used in Ethernet switches (LEDs, screens)**|
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| Switch/button | Power/reset | **TBI: what is the common practice in Ethernet switches** |
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## Power Supply
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* **To be investigated:**
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* What is typically used in Ethernet switches (standards and common practices)
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* What is typically used in Ethernet switches (standards and common practices, front or back)
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* If/what standards for redundant/swappable power supplies exist (e.g. check Intel standard CRPS)
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* **Initial idea:** the basic version of the switch should have single power supply (not redundant, not swappable) and be prepared for redundant/swappable supply, two possibilities to explore
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* Standard socket for redundant/swappable power supply already in place in the basic switch version (e.g. with [Zippy M1U2-5650V4H](http://www.circotech.com/zippy-m1u2-5650v4h-650w-1u-redundant-power-supply-.html) )
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*NOTE1: There is no swappable FANs in basic switch version - it would be too expensive, increase price at 60 euro per module*
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*NOTE2: Fanless version has been discarded, it is not sufficient for DWDM*
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## FPGA
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## FPGA
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* Zynq Ultrascale+
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* Most likely ZU11 |
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\ No newline at end of file |
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* Most likely ZU11
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* Speed & Temp Grade: -1 (slowest) Extended (0-100 C deg), [see](https://www.xilinx.com/support/documentation/data_sheets/ds925-zynq-ultrascale-plus.pdf)
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## PCB
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* 1 PCB for basic functionality - **TBI: the current sandwich approach seems OK**
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* Connectors
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** JTAG
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** Connector for expansion - **TBI: what type, etc**
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## Clocking
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* Modular - possibility to mount AUX (oscillator/clk) board to allow
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* adding good oscillator for holdover
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* replacing default oscillator with a better one for performance increase
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* DDS for lpGBT
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* Input clk to AD9516
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* **TBI: clocks other than 10MHz as inputs (e.g. 5MHz, 100MHz)** - maybe as part of the AUX board
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* Includ Low Jitter Daughterboard
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## CPU
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* More memory for Linux - **TBI: how much memory, DDR**
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* Storage memories: QSPI (recovery), eMMC (file system) |