OG_MU4-USBIF_v10e 6 Circuit Design, Inc.
OPERATION GUIDE
λ
/4
lead
antenna
Regulator
+3v
Tx
LED
Rx
LED
SW2
USB
Controller
EEPROM
VCC
1
2
3
4
5
6
7
8
+3v
+3v
+3v
Power
LED
Power LED
Tx LED
Rx LED
RSSI
GND
GND
+3v
+3v
Vbus 1
USB-B
Receptacle
D- 2
D+ 3
GND 4
+3v
MU-4
2
4
5
6
7
1
8
9
12
11
10
13
14
INI
RXD
TXD
RTS
CTS
MOD
RST
RXM
RF
GND
VCC
DI
DO
RXL
3
TXL
2.2 Block Diagram