SX1231 SEMTECH [Semtech Corporation], SX1231 Datasheet - Page 62

• Manufacturer Part Number: SX1231
• Description: Low Power Integrated UHF Transceiver
• Manufacturer: SEMTECH [Semtech Corporation]

Rev 2 - Nov 2009
ADVANCED COMMUNICATIONS & SENSING
RegListen1
(0x0D)
RegListen2
(0x0E)
RegListen3
(0x0F)
RegVersion
(0x10)
7-4
2-1
7-0
7-0
7-0
3
0
ListenResol
ListenCriteria
ListenEnd
-
ListenCoefIdle
ListenCoefRx
Version
rw
rw
rw
rw
rw
r
r
Page 62
1010
0x20
0x21
0xf5
01
0
0
*
Resolution of Listen modes timings (calibrated RC osc):
0101
1010
1111
Others
Criteria for packet acceptance in Listen mode:
0
1
SyncAddress matched
Action taken after acceptance of a packet in Listen mode:
00
be disabled (see section 4.3).
01
Timeout interrupt occurs. It then goes to the mode defined
by Mode . Listen mode stops and must be disabled (see
section 4.3).
10
Timeout interrupt occurs. Listen mode then resumes in
Idle state. FIFO content is lost at next Rx wakeup.
11
unused
Duration of the Idle phase in Listen mode.
Duration of the Rx phase in Listen mode (startup time
included, see section 4.2.3)
Version code of the chip. Bits 7-4 give the full revision
number; bits 3-0 give the metal mask revision number.
t
t
signal strength is above RssiThreshold
signal strength is above RssiThreshold and
ListenRx
ListenIdle
chip stays in Rx mode. Listen mode stops and must
Reserved
chip stays in Rx mode until PayloadReady or
chip stays in Rx mode until PayloadReady or
262 ms
64 us
4.1 ms
reserved
=
=
ListenCoef
ListenCoef
Rx
Idle
⋅
Listen
⋅
Listen
DATASHEET
www.semtech.com
SX1231
Re
Re
sol
sol