CC2431 Texas Advanced Optoelectronic Solutions, CC2431 Datasheet - Page 11

• Manufacturer Part Number: CC2431
• Description: System-on-Chip for 2.4 GHz ZigBee/ IEEE 802.15.4 with Location Engine
• Manufacturer: Texas Advanced Optoelectronic Solutions

REFCOORD (0xDF55)
MEASPARM (0xDF56)
LOCENG (0xDF57)
LOCX (0xDF58)
Bit
7:0
Bit
7:0
Bit
7:5
4
3
2
1
0
Bit
7:0
XDATA Address
0xDF55
0xDF56
0xDF57
0xDF58
0xDF59
0xDF60
0xDF61
Name
REFCOORD
Name
MEASPARM
Name
-
EN
DONE
PARLD
REFLD
RUN
Name
LOCX
Register name
REFCOORD
MEASPARM
LOCENG
LOCX
LOCY
CHVER
CHIPID
Table 3 : Overview of Location Engine RF registers
CC2431 Data Sheet (Rev. 2.01) SWRS034B
Reset
0
Reset
0
Reset
00
0
0
0
0
0
Reset
00h
Description
Reference coordinates input
Measured parameters input
Location Engine control and status
Location estimate X coordinate
Location estimate Y coordinate
Chip Version
Chip Identification
R/W
R/W
R/W
R/W
R/W
R0
R/W
R
R/W
R/W
R0W1
R/W
R
Description
Location Engine reference coordinate [x0, y0, x1, y1, …
x15, y15]
Description
Location Engine measured parameters of channel and
reference nodes
[A, n, x
Description
Reserved, read as 0.
Enable location engine
0
1
Estimation completed. After 1 has been written to RUN, this
bit is cleared and then set to 1 when the estimated data is
ready.
Load parameters. This bit shall be written as 1 before the
set of parameters are written to MEASPARM. Write 0 to this
bit after the last parameter has been written.
Load reference coordinates. This bit shall be written as 1
before the set of coordinates are written to REFCOORD.
Write 0 to this bit after the last coordinate has been written.
Location estimate start. This bit shall be written as 1 when
desired coordinates and parameters have been written to
REFCOORD and MEASPARM registers. Estimation
process starts when 1 is written to this bit. Always read as
0.
Description
Location estimate X coordinate with offset.
Disable location engine
Enable location engine
min
, x
delta
, y
min
, y
delta
, rssi
0
, rssi
CC2431
Page 11 of 15
1
, …, rssi
15
]