SM1211E915 Semtech, SM1211E915 Datasheet - Page 33

• Manufacturer Part Number: SM1211E915
• Description: Dev Kit Accessory
• Manufacturer: Semtech

Specifications of SM1211E915

• Modulation Type: FSK, OOK
• Data Rate Max: 200Kbps
• Frequency Range: 902MHz To 928MHz
• Supply Voltage Range: 2.1V To 3.6V
• Module Interface: SPI
• Supply Current: 25mA
• Accessory Type: RF Module
• Sensitivity: -105dBm
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: TQFN EP
• Operating Supply Voltage (min): 2.1V
• Operating Supply Voltage (typ): 2.5/3.3V
• Operating Supply Voltage (max): 3.6V
• Sensitivity (dbm): -105dBm
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

4. Operating Modes
This section summarizes the settings for each operating mode of the SX1211, and explains the functionality
available and the timing requirements for switching between modes.
Table 12: Operating Modes
Table 13 describes the state of the digital IOs in each of the above described modes of operation, regardless of the
data operating mode (Continuous, Buffered, or Packet).
Table 13: Pin Configuration vs. Chip Mode
Notes:
(1): High-Z if Continuous mode is activated, else Output
(2): Output if PLL_lock_en = 1, else High-Z
(3): Valid logic states must be applied to inputs at all times to avoid unwanted leakage currents
Rev 7 – Sept 2
ADVANCED COMMUNICATIONS & SENSING
Mode
Sleep
Standby
FS
Receive
Transmit
……….Mode
NSS_CONFIG
NSS_DATA
MISO
MOSI
SCK
IRQ_0
IRQ_1
DATA
CLKOUT
PLL_LOCK
4.1. Modes of Operation
4.2. Digital Pin Configuration vs. Chip Mode
Pin
Chip
nd
, 2008
MCParam_Chip_mode
Sleep
mode
Input
Input
Input
Input
Input
High-Z
High-Z
Input
High-Z
High-Z
000
001
010
011
100
Standby
mode
Input
Input
Input
Input
Input
Output (1)
Output (1)
Input
Output
Output (2)
Active blocks
SPI, POR
SPI, POR, Top regulator, digital regulator, XO, CLKOUT (if activated through
OSCParam_Clkout)
Same + VCO regulator, all PLL and LO generation blocks
Same as FS mode + LNA, first mixer, IF amplifier, second mixer set, channel
filters, baseband amplifiers and limiters, RSSI, OOK or FSK demodulator,
BitSync and all digital features if enabled
Same as FS mode + DDS, Interpolation filters, all up-conversion mixers, PA
driver, PA and external VR_PA pin output for PA choke.
FS mode
Input
Input
Input
Input
Input
Output (1)
Output (1)
Input
Output
Output (2)
Page 33 of 92
Receive
mode
Input
Input
Input
Input
Input
Output
Output
Output
Output
Output (2)
Transmit
mode
Input
Input
Input
Input
Input
Output
Output
Input
Output
Output (2)
Comment
NSS_CONFIG has the priority over
NSS_DATA
Output only if NSS_CONFIG or
NSSDATA=’0’
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SX1211