CC2431-RTR1 datasheet(10/15 Pages) TI

10 / 15 page

CC2431

SWRS034

Page 10 of 14

results have been calculated or until a

reset.

Note that

LOCENG.EN must be 1 during

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

tables in this section describe each

for Register conventions.

For the remaining RF registers refer to the

CC2430 Data Sheet.

Table 3 : Overview of Location Engine RF registers

XDATA

Address

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

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

R/W

Location Engine measured parameters of channel and

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

Table 5: Register MEASPARM (0xDF56)

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