AT86RF212_1 Datasheet, PDF (48/171 Pages) ATMEL Corporation – Low Power 700/800/900 MHz

Table 5-9. Configuration of IEEE 802.15.4 Devices
Register Register Register Name
Address
Bits
Description
0x20,0x21
0x22,0x23
0x24
…
0x2B
SHORT_ADDR_0/1
PAN_ADDR_0/1
IEEE_ADDR_0
…
IEEE_ADDR_7
Setup Frame Filter, see section 6.2.1
0x0C
7
RX_SAFE_MODE
0: disable frame protection
1: enable frame protection
0x2C
0
SLOTTED_OPERATION 0: Transceiver operates in unslotted
mode.
1: Transceiver operates in slotted mode,
see section 5.2.3.5.
0x2E
7:6
AACK_FVN_MODE
Controls the ACK behavior, depending on
FCF frame version number
b00 : acknowledges only frames with
version number 0, i.e. according to
IEEE 802.15.4-2003 frames
b01 : acknowledges only frames with
version number 0 or 1, i.e. frames
according to IEEE 802.15.4-2003/2006
b10 : acknowledges only frames with
version number 0 or 1 or 2
b11 : acknowledges all frames,
independent of the FCF frame version
number
Notes
• The default value of the short address is 0xFFFF. Thus, if no short address has been
configured, only frames with either the broadcast address or the IEEE address are
accepted by the frame filter.
• In the IEEE 802.15.4-2003 standard, the frame version subfield does not yet exist,
but is marked as reserved. According to this standard, reserved fields have to be set
to zero. At the same time, the IEEE 802.15.4-2003 standard requires ignoring
reserved bits upon reception. Thus, there is a contradiction in the standard which can
be interpreted in two ways:
1. If a network should only allow access to nodes compliant to IEEE 802.15.4-2003,
then AACK_FVN_MODE should be set to 0.
2. If a device should acknowledge all frames independent of its frame version,
AACK_FVN_MODE should be set to 3. However, this may result in conflicts with
co-existing IEEE 802.15.4-2006 standard compliant networks.
The same holds for PAN coordinators, see below.
PAN Coordinator
Table 5-10 shows the RX_AACK configuration registers, required to setup a PAN
coordinator device.
48 _AT86RF212
8168B-MCU Wireless-02/09