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Posts: 2
Registered: ‎01-16-2017

Si32178 without FXS support

[ Edited ]

Hello,

 

For a new project, because we need DTMF detection, we will change our Si3050 for a Si32178.
In this project, we only need FXO (no FXS).
So, I would like to know if I need to implement FXS and DC-DC converter ?

If I only need FXO, can I leave unconnected following pins : ?
- STIPAC (30)
- SRINGAC (31)
- STIPDC (29)
- SRINGDC (32)
- TIP (40)
- RING (38)
- SVDC (21)
- DCDRV (17)
- DCFF (14)
- SDCH (15)
- SDCL (16)
- SVBAT (22)
- VBAT(36)
- STIPC (34)
- SRINGC (33)

Many thanks for your help.

Best regards,

 

Damgot

Highlighted
Posts: 2
Registered: ‎01-31-2017

Re: Si32178 without FXS support

Hi,

 

This question was already submitted and answered in Silicon Labs SF case #00128306.

 

Best regards,

Ted.