Rev. 1.6 27
Si8650/51/52/55
5. Pin Descriptions (Si8655)
Name SOIC-16 Pin# Type Description
V
DD1
1 Supply Side 1 power supply.
GND1 2* Ground Side 1 ground.
A1 3 Digital Input Side 1 digital input.
A2 4 Digital Input Side 1 digital input.
A3 5 Digital Input Side 1 digital input.
A4 6 Digital Input Side 1 digital input.
A5 7 Digital Input Side 1 digital input.
GND1 8* Ground Side 1 ground.
GND2 9* Ground Side 2 ground.
B5 10 Digital Output Side 2 digital output.
B4 11 Digital Output Side 2 digital output.
B3 12 Digital Output Side 2 digital output.
B2 13 Digital Output Side 2 digital output.
B1 14 Digital Output Side 2 digital output.
GND2 15* Ground Side 2 ground.
V
DD2
16 Supply Side 2 power supply.
*Note: For narrow-body devices, Pin 2 and Pin 8 GND must be externally connected to respective ground. Pin 9 and Pin 15
must also be connected to external ground.
VDD1
A1
A3
A4
GND1
A2
V
DD2
B2
B1
B4
B3
GND2
I
s
o
l
a
t
i
o
n
RF
XMITR
RF
RCVR
RF
XMITR
RF
RCVR
RF
XMITR
RF
RCVR
RF
XMITR
RF
RCVR
Si8655
A5
RF
XMITR
RF
RCVR
B5
GND1 GND2
