Rainbow Electronics ATmega128RFA1 - Manual (Page 51)

51
8266A-MCU Wireless-12/09
ATmega128RFA1
Table 9-7. Configuration of a PAN Coordinator
Register Name Register Bits Description
SHORT_ADDR_0/1
PAN_ADDR_0/1
IEEE_ADDR_0
…
IEEE_ADDR_7
Set node addresses
RX_SAFE_MODE 7 0 : disable frame protection
1 : enable frame protection
SLOTTED_OPERATION 0 0 : if transceiver works in unslotted mode
1 : if transceiver works in slotted mode
AACK_I_AM_COORD 3 1 : device is PAN coordinator
AACK_SET_PD 5 0 : frame pending subfield is not set in FCF
1 : frame pending subfield is set in FCF
AACK_FVN_MODE 7:6 Controls the ACK behavior, depends on FCF
frame version number
0x00
: acknowledges only frames with version
number 0, i.e. according to IEEE 802.15.4-2003
frames
0x01
: acknowledges only frames with version
number 0 or 1, i.e. frames according to
IEEE 802.15.4-2006
0x10
: acknowledges only frames with version
number 0 or 1 or 2
0x11
: acknowledges all frames, independent of
the FCF frame version number
Promiscuous Mode
The promiscuous mode is described in IEEE 802.15.4-2006, section 7.5.6.5. This mode
is further illustrated in
Radio Transceiver Extended Feature Set on page 85 . According
to IEEE 802.15.4-2006 when in promiscuous mode, the MAC sub layer shall pass
received frames with correct FCS to the next higher layer without further processing.
That implies that frames should never be acknowledged.
Only second level filter rules as defined by IEEE 802.15.4-2006, section 7.5.6.2, are
applied to the received frame.
Table 9-8 below shows the typical configuration of a device operating in promiscuous
mode.
Table 9-8. Configuration of Promiscuous Mode
Register Name Register Bits Description
SHORT_ADDR_0/1
PAN_ADDR_0/1
IEEE_ADDR_0
…
IEEE_ADDR_7
Each address shall be set: 0x00
AACK_PROM_MODE 1 1 : Enable promiscuous mode
AACK_DIS_ACK 4 1 : Disable generation of acknowledgment