MRF24XA_15 Datasheet, PDF (140/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
5.2 Addressing in IEEE 802.15.4
Compliant Framing Mode
The Destination Addressing Mode (DAMode) and
Source Addressing Mode (SAMode) bit fields of
FrameCrtl defines the Address format used in MHR,
see Figure 5-1. DAMode subfield encodes the length of
the DestPID and DestAddr fields as listed in Table 5-3.
SAMode subfield encodes the length of the SrcPID and
SrcAddr fields as listed in Table 5-3.
TABLE 5-2: IEEE 802.15.4™ DESTINATION ADDRESSING MODES
DAMode b1, b0
11
10
01
00
Destination Addressing Mode
16-bit DestPID and 64-bit Dest. Long Address
16-bit DestPID and 16-bit Dest. Short Address
Reserved
DestPID and DestAddr are not present
DestPID | DestAddr format
XXXXh | XXXX_ XXXX_ XXXX_ XXXXh
XXXXh | XXXXh
—
—
TABLE 5-3: IEEE 802.15.4™ SOURCE ADDRESSING MODES
SAMode b1, b0
Source Addressing Mode
SrcPID | SrcAddr Format
11
If DAMode<1> = 1 and PIDCmp = 1, then only
64-bit Source Long Address
(SrcPID is implied by DestPID)
else,
16-bit SrcPID and 64-bit Source Long Address
- |XXXX_XXXX_XXXX_XXXXh
XXXXh | XXXX_XXXX_XXXX_XXXXh
10
If DAMode<1> = 1 and PIDCmp = 1, then only
16-bit Source Short Address
(SrcPID is implied by DestPID)
else,
16-bit SrcPID and 16-bit Source Short Address
- |XXXXh
XXXXh | XXXXh
01
Reserved
—
00
SrcPID and SrcAddr are not present
—
On reception of a frame, each node compares its own
SHADDR, ADDR, PANID Configuration, see Table 5-4,
to the appropriate destination addressing fields in the
received frame. A valid frame is identified if a match is
found.
Additionally, rules apply for broadcast frames and for
implied unicast addressing as explained in the sequel.
TABLE 5-4: RELEVANT REGISTERS FOR IEEE 802.15.4™-MODE ADDRESSING
ADDR. RESGISTER Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
ADDR1
ADDR2
ADDR3
ADDR4
ADDR5
ADDR6
ADDR7
ADDR8
SHADDRL
SHADDRH
PANIDL
PANIDH
ADDR<7:0>
ADDR<15:8>
ADDR<23:16>
ADDR<31:24>
ADDR<39:32>
ADDR<47:40>
ADDR<55:48>
ADDR<63:56>
SHADDR<7:0>
SHADDR<15:8>
PANID<7:0>
PANID<15:8>
DS70005023C-page 140
Preliminary
 2015 Microchip Technology Inc.