CC2431

CC2431 PRELIMINARY Datasheet (Rev. 1.01) SWRS034A

Page 10 of 13

results have been calculated or until a

reset.

Note that

operation of the Location Engine.

2.2 Location Engine Registers

This section describes the RF registers

associated with the Location Engine.

These registers are:

•

LOCENG

Location Engine

control and status

•

REFCOORD

Reference

coordinates input

•

MEASPARM

Measured

parameters input

•

LOCX

Location estimate

X coordinate

•

LOCY

Location estimate

Y coordinate

•

LOCMIN

Minimum function

estimate

The RF registers reside in XDATA memory

space. Table 3 gives an overview of

register addresses while the remaining

tables in this section describe each

register in detail. Refer also to section 1

for Register conventions.

For the remaining RF registers refer to the

CC2430 Data Sheet.

Table 3 : Overview of Location Engine RF registers

XDATA

Address

Register name

Description

0xDF55

REFCOORD

Reference coordinates input

0xDF56

MEASPARM

Measured parameters input

0xDF57

LOCENG

Location Engine control and status

0xDF58

LOCX

Location estimate X coordinate

0xDF59

LOCY

Location estimate Y coordinate

0xDF5A

LOCMIN

Minimum function estimate

0xDF60

CHVER

Chip Version

0xDF61

CHIPID

Chip Identification

Bit

Name

Reset

R/W

Description

7:0

REFCOORD

0

R/W

Location Engine reference coordinate [x0, y0, x1, y1, … x7,

y7]

Table 4: Register REFCOORD (0xDF55)

Bit

Name

Reset

R/W

Description

7:0

MEASPARM

0

R/W

Location Engine measured parameters of channel and

reference nodes [A, n, rssi0, rssi1, …, rssi7]

Table 5: Register MEASPARM (0xDF56)