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ID: 5430
Case Type: faq
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SNAP Module external FAQs

1. What collateral are available without NDA?

The following collateral are available without NDA:

   a. Reference schematics for a system using the module (.DSN, .pdf, and BOM available).

   b. Module full datasheet (an email address is required, but no NDA).

   c. Module design guidelines (part of the module data sheet).

   d. Module product brief.

   e. A video tutorial highlighting the technical features and benefits of the Snap module.

A click through license agreement is required for the following:

   a. Snap windows utility for link management.

   b. All other Snap documentation require a valid NDA in place.

2. Will the antenna require a separate design effort?

No, we have designed a fully operational and regulatory compliant 60GHz antenna and have embedded the antenna within the package of our IC. All you need to do is choose one of two antenna designs (broad fire or edge fire).

3. What type of signals can be routed wirelessly?

We are able to route USB3.1 gen1 (5.0Gbps), USB2.0 (LS, FS, and HS), I2C, and a single GPIO signal wirelessly.

4. Can Snap support USB3.0 and USB2.0 simultaneously?

Yes, Snap supports USB3.0 and USB2.0 simultaneously.

5. Can Snap support USB3.1?

Yes, but only at gen 1 speed (5.0 Gbps).

6. What is the maximum distance allowed between chip-to-chip for proper link connection?

This varies based on X/Y mismatch, material between RX/TX antennas, and other design considerations. Please review the design guidelines document to get a better understanding about the tolerance allowed for specific design constraints.

7. What enclosure materials can be used?

We have tested with various glass and plastic materials and it is recommend that the wireless link from TX to RX antenna (chip to chip) to transfer through a uniformly low dielectric constant based material. Review the design guidelines to ensure the material chosen works well.

8. What is the maximum trace length supported on USB3.0 signal path?

We require a compliant USB3.0 RX eye at the input of our USB RX, wired, pins and we will in turn generate a compliant TX eye on other side (after the wireless link is converted back into a wired signal).

9. What power rails are needed for the Snap module?

We require a single 3.3 V power rail for any of our Snap modules.

10. How much current will the module draw?

Current draw details can be found on the module datasheet and summarized below:

   a. W0 Typical Power - 533 mW

   b. W2 Typical Power - 187 mW

   c. W3 Typical Power - 140 mW

   d. OFF, Disable Power - 96 uW (Typ)

   e. Link Scan Mode Typical Power - 12 mW

11. Can the module support extended temperature ranges?

The module can support a junction temperature range of 0 degree C to 110 degrees C.

12. How does WiGig interfere with Snap?

Since Snap connection requires close proximity, WiGig signals do not negatively impact the link.

13. Do we compress the data before routing wirelessly?

No, we do not compress the data.

14. Can a broad side module and an edge side module be connected together?

No, they cannot be connected.

15. How does proximity detection work?

When enabled, the proximity initiator (*6211; *6213) sends out a regular message out and waits for a response. The responder (*6212; *6210) sleeps and wakes up every once in a while, to look for the message. If the message is not detected, the responder goes back to sleep to save power. Therefore, it is best to integrate the responder into the side of the device that requires the lowest amount of power during \u201Cproximity detection\u201D.

16. Do we have any information about X-ray or strong magnetic (Magnetic Resonance imaging) influence to the 60 GHz?

In case we approach X-Ray or MRI medical systems, there have been no issues reported in these environments. No issues should be expected, since the spectrum of each are separated by a great deal; such that even the harmonics of each are greatly reduced below fundamental. However, it has not been tested.

17. How long does it take to re-establish a link in case of an error?

The Snap device itself automatically disconnects the USB link completely when there is an error and re-connect the link. The re-enumeration of USB devices could take about 250 ms.

18.Do we need a waveguide?

No, we do not need a waveguide.

19. Are TX antenna and RX antenna on separate chips?

No, we have integrated both RX and TX antennas on the same IC thereby offering a true single-chip solution.

20. How can you transfer video such as HDMI or DisplayPort via a Snap link?

Using USB-AV techniques we are able to route USB data wirelessly and then use off-the-shelf solutions from companies such as DisplayLink to extract A/V signals from the USB data stream. DisplayLink solutions are able to extract audio and video from the USB data stream and directly drive an HDMI or DisplayPort display.

21. Does Snap need drivers?

No, our solution mimics a mechanical USB connector and therefore requires no software drivers. Which means Snap will be able to work in any environment with any OS. The RF link management tool will, however, only operate on a Windows machine.

22. Can Snap support USB OTG?

Yes. Via hardware straps our solution can support OTG modes and dynamically switch between host and device modes when the link is established. Once the link is established with a Snap pair, USB mode (host vs. device) cannot be changed unless the link is broken or a reset occurs.

23. What is the min order quantity per module part number?

A single tray, which is 125 modules, is the minimum order quantity per part number.

24. What multiple should be used when placing module orders?

All orders should ship with full trays and since each tray holds 125 modules, all orders must be in multiples of 125 units.

25. Do the modules come with wireless compliance?

Yes. Snap modules have obtained 60 GHz regulatory grants for FCC/IC/CE/EU/AU/NE. System integrators do not need to repeat the 60 GHz regulatory certification but will still need to perform the system level EMI testing. If the system sells to US market, the customer will need to agree to provide Lattice with clear proof of passing EMI testing before shipping their product to the market. New China government regulation waives the requirement for the Snap module 60 GHz certification testing since the module runs on low power short-distance radio transmission. If the region is not included on the list, the system integrator could use the FCC ID as a reference to apply for the particular regional certification.
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