S e t u p a n d i n s t a l l a t i o n
Table 2: SW200 Audio switch (installed on daughterboards used for voice-
enabled modules)
Function
Dip1
Dip2
Dip3
Dip4
+20 dB mic path gain
On
Off
Unity gain mic path gain
Off
On
Disable mic connection
Off
Off
Differential mic input
On
Off
Single-ended mic input
Off
On
Disable mic connection
Off
Off
Table 3: SW5 - WAN LED switch
Function
Dip1
Dip2
Dip3
Dip4
OPEN DRAIN LED control
On
Off
On
Off
CMOS LED control
Off
On
Off
On
Disable LED control
Off
Off
Off
Off
Table 4: SW201 - Enable switch
Function
Dip1
Dip2
Dip3
Dip4
Fix VCC_3.3V LDO output to 3.30 V (powered
from barrel jack)
On
Allow VCC_3.3V LDO output to adjust from 2 V
to 5 V via R102 potentiometer
Off
Enable VCC_3.3V LDO
On
Disable VCC_3.3V LDO
Off
Disable Mini Card (asserts W_DISABLE_N)
On
Enable Mini Card (deasserts W_DISABLE_N)
Always
off
Off
Table 5: CN201 - Power selection switch
Function
Jump
1-2
Jump
3-4
Jump
5-6
Enable onboard LDO to supply VCC_3.3V
power from barrel jack
Yes
Insert supercapacitor in circuit on VCC_3.3V
node (useful for GSM products)
n/a
Yes
R102 - VCC_3.3V Adjust
R102 can be used to scale the output of the VCC_3.3V on board regulator in the
range of 2.0 V-5.0 V when CN201 pins 1 and 2 are jumpered and SW201 (Dip-1)
is off.
1 . 1 C A p r - 0 6
1 1