Fn-Link F23BUUM13-W2 Manual

WIFI+BT Module
F23BUUM13‐W2
Manual and Spec, revision 1.0
Reference Documents

FN‐LINK F23BUUM13‐W2 module product specification

FMA WIFI‐FTSW‐USB schematic
Description
The Fender FMA WIFI‐FTSW‐USB PCB Assembly is an I/O board (WIFI board) used in the family of
Fender Modular Architecture (FMA) products. The board has a USB port with a micro AB connector, a
Fender Footswitch port with a ¼" phone jack and a wireless module.
Circuit Description
Referring to the block diagram, there are three main sections of the circuit:

FN‐Link F23BUUM13‐W2 module

USB port

Footswitch port
Communication with the FN‐Link module is accomplished through a USB port from the 18‐pin main
board header. The WiFi and Bluetooth radio circuitry is contained on the FN‐Link module. There is no
antenna on the module so the radio output from the module connects to an F‐Type PCB antenna on the
PCBA. The FN‐Link module operates from a 3.3V supply source on the main PCB through the 18‐pin
header.
The USB circuit on the PCBA consists of ESD protection components and a micro AB USB connector.
The Footswitch circuit on the PCBA consists of ESD protection components and a ¼" phone jack
connector.
FN‐Link Module installation and Use
The FN‐Link module is soldered to the PCBA. Pads on the PCBA make contact to the 3.3V supply, USB
port and antenna. All communication between the host processor and the module is accomplished
through the modules USB port. A description of specific commands for Bluetooth and WiFi driver
development is beyond the scope of this document and can be found in documentation from Realtek
for the RTL8723BU WiFi+BT chip elsewhere.