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SX1211
WIRELESS & SENSING
1.3. Pin Description
Table 2: SX1211 Pinouts
Number
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Name
GND
TEST5
TEST1
VR_VCO
VCO_M
VCO_P
LF_M
LF_P
TEST6
TEST7
XTAL_P
XTAL_M
TEST0
TEST8
NSS_CONFIG
NSS_DATA
MISO
MOSI
SCK
CLKOUT
DATA
IRQ_0
IRQ_1
PLL_LOCK
TEST2
TEST3
VDD
VR_1V
VR_DIG
VR_PA
TEST4
RFIO
NC
Type
I
I/O
I/O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I/O
I
I
O
I
I
O
I/O
O
O
O
I/O
I/O
I
O
O
O
I/O
I/O
-
Description
Exposed ground pad
Connect to GND
Connect to GND
Regulated supply of the VCO
VCO tank
VCO tank
PLL loop filter
PLL loop filter
Connect to GND
Connect to GND
Crystal connection
Crystal connection
Connect to GND
POR. Do not connect if unused
SPI CONFIG enable
SPI DATA enable
SPI data output
SPI data input
SPI clock input
Clock output
NRZ data input and output (Continuous mode)
Interrupt output
Interrupt output
PLL lock detection output
Connect to GND
Connect to GND
Supply voltage
Regulated supply of the analog circuitry
Regulated supply of digital circuitry
Regulated supply of the PA
Connect to GND
RF input/output
Connect to GND
Note: pin 13 (Test 8) can be used as an manual reset trigger. See section 7.4.2 for details on its use.
Rev 8 – February 2013
Page 7 of 92
www.semtech.com
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