Specifications

Page 72
WT1231H
ADVANCED COMMUNICATIONS & SENSING DATASHEET
7 PacketFormat rw 0 Defines the packet format used:
0 → Fixed length
1 → Variable length
6-5 DcFree rw 00 Defines DC-free encoding/decoding performed:
00 → None (Off)
01 → Manchester
10 → Whitening
11 → reserved
4 CrcOn rw 1 Enables CRC calculation/check (Tx/Rx):
0 → Off
1 → On
3 CrcAutoClearOff rw 0 Defines the behavior of the packet handler when CRC
check fails:
0 → Clear FIFO and restart new packet reception. No
PayloadReady interrupt issued.
1 → Do not clear FIFO. PayloadReady interrupt issued.
2-1 AddressFiltering rw 00 Defines address based filtering in Rx:
00 → None (Off)
01 → Address field must match NodeAddress
10 → Address field must match NodeAddress or
BroadcastAddress
11 → reserved
RegPacketConfig1
(0x37)
0 - rw 0 unused
RegPayloadLength
(0x38)
7-0 PayloadLength rw 0x40 If PacketFormat = 0 (fixed), payload length.
If PacketFormat = 1 (variable), max length in Rx, not used
in Tx.
RegNodeAdrs
(0x39)
7-0 NodeAddress rw 0x00 Node address used in address filtering.
RegBroadcastAdrs
(0x3A)
7-0 BroadcastAddress rw 0x00 Broadcast address used in address filtering.
7-5 EnterCondition rw 000 Interrupt condition for entering the intermediate mode:
000 → None (AutoModes Off)
001 → Rising edge of FifoNotEmpty
010 → Rising edge of FifoLevel
011 → Rising edge of CrcOk
100 → Rising edge of PayloadReady
101 → Rising edge of SyncAddress
110 → Rising edge of PacketSent
111 → Falling edge of FifoNotEmpty (i.e. FIFO empty)
4-2 ExitCondition rw 000 Interrupt condition for exiting the intermediate mode:
000 → None (AutoModes Off)
001 → Falling edge of FifoNotEmpty (i.e. FIFO empty)
010 → Rising edge of FifoLevel or Timeout
011 → Rising edge of CrcOk or Timeout
100 → Rising edge of PayloadReady or Timeout
101 → Rising edge of SyncAddress or Timeout
110 → Rising edge of PacketSent
111 → Rising edge of Timeout
RegAutoModes
(0x3B)
1-0 IntermediateMode rw 00 Intermediate mode:
00 → Sleep mode (SLEEP)
01 → Standby mode (STDBY)
10 → Receiver mode (RX)
11 → Transmitter mode (TX)