CC2520 DATASHEET
2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER
SWRS068 – DECEMBER 2007
28.3 Register Descriptions
The heading for each register is built up according to the following pattern:
<Register
name>,
A <address>, R <reset
value>,
<Short
register description>
FRMFILT0, A 0x000, R 0x0D, Frame filtering
Bit
no.
7
6:4
Bit mnemonic
Reset
value
0
000
Mode
R/W
R/W
Description
Reserved. Always write ‘0’
Used for filtering on the reserved part of the frame control
field (FCF). FCF_RESERVED_MASK[2:0] is AND'ed with
FCF[9:7]. If the result is non-zero, and frame filtering is
enabled, the frame is rejected.
Used for filtering on the frame version field of the frame
control field (FCF).
If FCF[13:12] (the frame version subfield) is higher than
MAX_FRAME_VERSION[1:0], and frame filtering is
enabled, the frame is rejected.
1
RESERVED
FCF_RESERVED_MASK[2:0]
3:2
MAX_FRAME_VERSION[1:0]
11
R/W
PAN_COORDINATOR
0
R/W
Should be set high when the device is a PAN coordinator,
to accept frames with no destination address (as specified
in section 7.5.6.2 in 802.15.4(b))
0 - Device is not PAN coordinator
1 - Device is PAN coordinator
0
FRAME_FILTER_EN
1
R/W
Enables frame filtering.
When this bit is set, CC2520 will perform frame filtering as
specified in section 7.5.6.2 of 802.15.4(b), third filtering
level. FRMFILT0[6:1] and FRMFILT1[7:1] together with
the local address information, define the behavior of the
filtering algorithm.
0 - Frame filtering off. (FRMFILT0[6:1], FRMFILT1[7:1]
and SRCMATCH[2:0] are don't care).
1 - Frame filtering on.
WWW.TI.COM
105
TI [ TEXAS INSTRUMENTS ]
