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Page 34 of 80
DNT90 Integration Guide - 08/09/12
arguments except text strings. Little-Endian byte order places the lowest order byte in the left-most byte
of the argument and the highest order byte in the right-most byte of the argument.
7.3 Message Format Details
Table 7.3.1 below summarizes the DNT90E protocol-formatted messages:
Command
Reply
Event
Type
Direction
Min Slot Size
0x00
-
-
EnterProtocolMode
from Host
N/A
-
0x10
-
EnterProtocolModeReply
from Radio
N/A
0x01
-
-
ExitProtocolMode
from Host
N/A
0x02
-
-
DeviceReset
from Host
N/A
-
0x12
-
DeviceResetReply
from Radio
N/A
0x03
-
-
GetRegister
from Host
N/A
-
0x13
-
GetRegisterReply
from Radio
N/A
0x04
-
-
SetRegister
from Host
N/A
-
0x14
-
SetRegisterReply
from Radio
N/A
0x05
-
-
TxData
from Host
length value -0x03
-
0x15
-
TxDataReply
from Radio
0x01
0x06
-
-
GetRemoteRegister
from Host
0x03
-
0x16
-
GetRemoteRegisterReply
from Radio
0x14
0x07
-
-
SetRemoteRegister
from Host
0x13
-
0x17
-
SetRemoteRegisterReply
from Radio
0x04
-
-
0x26
RxData
from Radio
length value -0x03
-
-
0x27
Announce/Error
from Radio
0x07
-
-
0x28
RxEvent
from Radio
0x0D
Table 7.3.1
EnterProtocolMode
command and reply format details are presented in Tables 7.3.2 and 7.3.3:
Enter Protocol Mode Command
Byte Offset
Field
Description
0x00
Start-of-Packet
0xFB = Indicates start of protocol formatted message
0x01
Length
0x07 = Number of bytes in message following this byte
0x02
Packet Type
0x00 = EnterProtocolMode
0x03 - 0x08
Payload
String = “DNTCFG” or 0x44 0x4E 0x54 0x43 0x46 0x47
Table 7.3.2
Enter Protocol Mode Reply
Byte Offset
Field
Description
0x00
Start-of-Packet
0xFB = Indicates start of protocol formatted message
0x01
Length
0x01 = Number of bytes in message following this byte
0x02
Packet Type
0x10 = EnterProtocolModeReply
Table 7.3.3