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SX1210
ADVANCED COMMUNICATIONS & SENSING
L F S R P o ly n o m ia l = X 9 + X 5 + 1
X 8
X 7
X 6
X 5
X 4
X 3
X 2
X 1
X 0
T ra n sm it d a ta
Figure 38: Data Whitening Implementation
5.5.6. Interrupt Signal Mapping
Tables below give the description of the interrupts available in Packet mode.
Table 19: Interrupt Mapping in Rx and Stby in Packet Mode
W h ite n e d d a ta
Rx_stby_irq_x
00 (d)
Rx
Payload_ready
-
Stby
IRQ_0
IRQ_1
01
10
11
00 (d)
01
10
11
Write_byte
/Fifoempty
Sync or Adrs_match*
CRC_OK
Fifofull
RSSI
Fifo_threshold
-
/Fifoempty
-
-
Fifofull
-
Fifo_threshold
*The latter if Address filtering is enabled
5.5.7. uC Connections
SX1210
IRQ_0
IRQ_1
NSS_CONFIG
uC
NSS_DATA
SCK
MOSI
MISO
Figure 39: uC Connections in Packet Mode
Note that depending upon the application, some uC connections may not be needed:
IRQ_0: if none of the relevant IRQ sources are used. In this case, leave floating.
Rev 2– Sept 8 , 2008
th
Page 46 of 73
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