xe1205 Semtech Corporation, xe1205 Datasheet - Page 37

• Manufacturer Part Number: xe1205
• Description: Low-power, High Link Budget Integrated Uhf Transceiver
• Manufacturer: Semtech Corporation

The sequence from transmit to receive mode is shown in Figure 21. TS_RE is the initialization time of the receiver base
band filter when the frequency synthesizer is enabled. The base band filter initialization and calibration processes occur
when the transceiver switches from transmit to receive.
Figure 22 represents the sequence from receive to transmit mode. TS_TR is the initialization time of the power amplifier
if the frequency synthesizer is already enabled:
© Semtech 2007
Programmed mode
Programmed mode
NSS_CONFIG
Actual mode
NSS_CONFIG
Actual mode
Programmed mode
NSS_CONFIG
Actual mode
Figure 20. Sequence from sleep to transmit mode via stand-by mode.
Figure 21 Sequence from transmit to receive mode.
Sleep
Sleep
Figure 22: Sequence from receiver to transmitter mode
Receive
Receive
Transmit
Transmit
TS_OS
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Stand-by
Stand-by
TS_TR
TS_RE
Transmit
Receive
TS_STR
Transmit
Receive
Transmit
Transmit
XE1205
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