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IEEE 802.15.4 protocol
Figure 7.
IEEE 802.15.4 general MAC frame format
The MAC frame is composed of a MAC header (MHR), a MAC payload, and a MAC footer
(MFR). The MHR is composed of fixed fields. The address fields are optional.
Table 3.
2 bytes
Frame
control
field
(FCF)
The MAC frame control field (FCF) has the following structure:
15
14
13
Source
Reserved
addressing mode
Bits [15:14] Source addressing mode
Bits [12:13] Reserved
Bits [11:10] Destination addressing mode
Bits [7:9] Reserved
12/54
Coordinator-to-device communications in non beacon-enabled networks
General MAC frame format
1 byte
0/2 bytes
Destination
PAN
Sequence
identifier
number
12
11
10
9
Destination
addressing mode
00: PAN identifier and address field are not present.
01: reserved
10: Address field contains a 16-bit short address.
11: Address field contains a 64-bit extended address.
00: PAN identifier and address field are not present.
01: reserved
10: Address field contains a 16-bit short address.
11: Address field contains a 64-bit extended address.
Doc ID 16995 Rev 10
0/2/8 bytes
0/2 bytes
Source
Destination
PAN
address
identifier
Addressing fields
MHR
8
7
6
Intra-
Reserved
PAN
request
0/2/8
Variable
bytes
Source
address
Frame
payload
MAC
payload
5
4
3
MAC
Ack.
Security
frame
enabled
pending
UM0893
2 bytes
FCS
MFR
2
1
0
MAC frame type
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