User's Manual

Fender FMA BT-FTSW-USB PCBA (PN 7710068000) Page 2
Manual and Spec, revision 1.0 November 8, 2016
FMA Main PCB Interface Header
All control and power signals come from a connection to a motherboard through an 18-pin, 2mm dual
row female header. The pinout for the header is in the table below:
Pin
Signal
Description
1
USB_OTG_DP
USB OTG port data signal
2
USB_OTG_DN
USB OTG port data signal
3
GNDD
Digital GND
4
FTSW_DAT
Footswitch port data signal
5
STATUS_LED
-
CHIP_WAKE
Status GPIO output
6
FTSW_DET
Footswitch port detect
7
PAIR
-
HOST_WAKE
Pair GPIO input
8
USB_OTG_5V
Reserved for future use
9
USB_OTG_ID
USB OTG port ID signal
10
3.3V
3.3V DC Supply
for
digital circuitry and BT module
11
Not used
12
GNDD
Digital GND
13
Not used
14
+5V_ANALOG
5V DC Supply for analog audio circuit
15
GNDA
Audio GND
16
G2V5
2.5V half
-
bias reference for analog audio circuit
17
BTA_L
Analog audio signal output LEFT
18
BTA_R
Analog audio signal output RIGHT