sx1231h Semtech Corporation, sx1231h Datasheet - Page 73

• Manufacturer Part Number: sx1231h
• Description: Low Power Integrated Uhf Transceiver With On-chip +20dbm Pa
• Manufacturer: Semtech Corporation

Rev 1 - Oct 2011
RegFifoThresh
(0x3C)
RegPacketConfig2
(0x3D)
RegAesKey1
(0x3E)
RegAesKey2
(0x3F)
RegAesKey3
(0x40)
RegAesKey4
(0x41)
RegAesKey5
(0x42)
RegAesKey6
(0x43)
RegAesKey7
(0x44)
RegAesKey8
(0x45)
RegAesKey9
(0x46)
RegAesKey10
(0x47)
RegAesKey11
(0x48)
RegAesKey12
(0x49)
RegAesKey13
(0x4A)
ADVANCED COMMUNICATIONS & SENSING
6-0 FifoThreshold
7-4 InterPacketRxDelay
7-0 AesKey(127:120)
7-0 AesKey(119:112)
7-0 AesKey(111:104)
7-0 AesKey(103:96)
7-0 AesKey(95:88)
7-0 AesKey(87:80)
7-0 AesKey(79:72)
7-0 AesKey(71:64)
7-0 AesKey(63:56)
7-0 AesKey(55:48)
7-0 AesKey(47:40)
7-0 AesKey(39:32)
7-0 AesKey(31:24)
7
3
2
1
0
TxStartCondition
-
RestartRx
AutoRxRestartOn
AesOn
rw
rw
rw
rw
rw
rw
w
w
w
w
w
w
w
w
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Page 73
0001111 Used to trigger FifoLevel interrupt.
0000
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
1
0
0
1
0
*
Defines the condition to start packet transmission :
0
exceeds FifoThreshold)
1
unused
Forces the Receiver in WAIT mode, in Continuous Rx
mode.
Always reads 0.
Enables automatic Rx restart (RSSI phase) after
PayloadReady occurred and packet has been completely
read from FIFO:
0
1
InterPacketRxDelay .
Enable the AES encryption/decryption:
0
1
1
2
3
4
5
6
7
8
9
10
11
12
13
After PayloadReady occurred, defines the delay between
FIFO empty and the start of a new RSSI phase for next
packet. Must match the transmitter’s PA ramp-down time.
- Tdelay = 0 if InterpacketRxDelay >= 12
st
nd
rd
th
th
th
th
th
th
- Tdelay = (2
th
th
th
th
byte of cipher key (MSB byte)
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
byte of cipher key
FifoLevel (i.e. the number of bytes in the FIFO
FifoNotEmpty (i.e. at least one byte in the FIFO)
Off. RestartRx can be used.
On. Rx automatically restarted after
Off
On (payload limited to 66 bytes maximum)
byte of cipher key
byte of cipher key
byte of cipher key
InterpacketRxDelay
) / BitRate otherwise
SX1231H
DATASHEET
www.semtech.com