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5.2.9
XE1401 – Application Board Connector
It is possible to connect an external application board to the XE1401SK by using the 50 pins connector JP2. The
pinning of this 50 pins male connector reflects the pinning of the XE1401 (XE1401 - pin 1 = JP2 - pin 1, XE1401 -
pin 2 = JP2 - pin 2 ...).
The application board power source at pin 48 has to be set by jumper JP7. Please refer to chapter 5.3
Motherboard Jumper Settings for more details.
The pinning of the 50 pins 2.54mm male connector is:
Note! VOUT is the output voltage present on pin 48, selected by JP7. If JP7 is set to 1.8V the on chip regulator of
the XE1401 will provide the 1.8V. Be sure that the current sunk by the external application board respects the
maximal current draw provided by the various power sources.
© Semtech 2006
VDD_REG
1
3
MCLK
NSS
5
MISO
7
9
PCM_DIN
FSYNC
11
MODE[0]
13
MODE[2]
15
RTS
17
19
UA_RX
NC1
21
RADIO_TYPE
23
CLK_IN
25
NC3
27
NC5
29
31
RF_OUT[2]
RF_OUT[5]
33
RF_IN[0]
35
RF_OUT[1]
37
RF_OUT[4]
39
RF_IN[3]
41
NC8
43
NRESET
45
VSSD3
47
GND
49
* Output voltage selectable by jumper JP7
Top view of the 50 pins connector JP2 for an external application board
15
GND
2
MOSI
4
6
SCK
8
PCM_DOUT
10
BCLK
12
VSSD1
MODE[1]
14
CTS
16
UA_TX
18
20
NCS
22
VDD_IO_DIG
24
NC2
RF_IN[1]
26
28
NC4
30
NC6
32
NC7
34
RF_IN[2]
RF_OUT[3]
36
38
RF_OUT[0]
RF_OUT[6]
40
VSSD2
42
44
NC9
GND
46
VOUT*
48
GND
50
Users Guide
XE1401SK Hardware
www.semtech.com
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