Datasheet > CC2431ZRTC

CC2431ZRTC

更新时间： 2024-01-29 23:01:07

品牌	Logo	应用领域
TAOS		电信集成电路
页数	文件大小	规格书
16页	194K
描述
System-on-Chip for 2.4 GHz ZigBee/ IEEE 802.15.4 with Location Engine

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CC2431ZRTC 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	QFN-48	针数：	48
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
Factory Lead Time：	1 week	风险等级：	7.15
Is Samacsys：	N	JESD-30 代码：	S-XQCC-N48
JESD-609代码：	e4	长度：	7 mm
湿度敏感等级：	3	功能数量：	1
端子数量：	48	封装主体材料：	UNSPECIFIED
封装代码：	QCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	表面贴装：	YES
电信集成电路类型：	TELECOM CIRCUIT	端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：	NO LEAD	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7 mm
Base Number Matches：	1

CC2431ZRTC 数据手册

CC2431

2.1.1 Reference Coordinates

The Location Engine requires a set of between

three and 16 reference coordinates [x0, y0, x1,

y1, …, x15, y15] to be input. The reference

coordinates express each reference nodes

position in meters, as unsigned values in the

interval [0, 63.75] meters. The finest possible

readout resolution is 0.25 meter. The format

used is fixed-point data with the two LSBs

representing the fractional part and the

remaining six bits representing the integer

part, thus e.g. 63.75 is represented as 0xFF.

reference coordinates are being written. Once

the coordinate load process commences

(LOCENG.REFLD =1), 16 coordinate pairs

must always be written. However, it is possible

for the Location Engine to use less than 16

reference coordinates, by marking certain

reference coordinates as unused. Zeros shall

be used to fill the unused reference coordinate

slots, and they will be interpreted as unused

when 0.0 is loaded as the RSSI value for

those reference coordinates.

Reference coordinates are loaded into the RF

REFCOORD, a 1 must be written to the register

bit LOCENG.REFLD to indicate that a set of

The reference coordinates are written in the

order [x0, y0, x1, y1, …, x15, y15] to the

been written, a 0 is written to the register bit

LOCENG.REFLD.

2.1.2 Measured Parameters

After the reference coordinates have been

written, a set of measured parameters must be

input to the Location Engine. These

parameters consist of two radio parameters:

Four search boundary coordinates and 16

RSSI values. The radio parameters are the

values A and n. These radio parameters are

used in the Engine’s algorithm used to find the

estimated location. The parameters A and n

can be adjusted to describe the propagation

environment in which a network of devices will

operate.

2.1.2.1 Parameter Definitions

The measured parameters are described in

this section together with how these should be

estimated.

2.1.2.1.1

Parameter A

The radio parameter A is defined as the

absolute value of the average power in dBm

received at a close-in reference distance of

one meter from the transmitter, assuming an

The Engine expects the parameter A to be in

the range [30.0, 50.0] with precision 0.5. The

parameter A is given as an unsigned fixed-

point value where the LSB bit is the fractional

bit and the remaining bits are the integer part.

A typical value for A is 40.0.

omni-directional radiation pattern.

For

example, if the mean received power at one

meter is -40 dBm, the parameter A is specified

as 40.

2.1.2.1.2

Parameter n

The radio parameter n is defined as the path

loss exponent that describes the rate at which

the signal power decays with increasing

distance from the transmitter. This decay is

proportional to d^-nwhere d is the distance

between transmitter and receiver.

As an example, in the case when the value

n=2.98 is found from measurements, the

closest available value of n in the lookup table

is 3.00, corresponding to index 13. Therefore,

the integer value 13 is used for the parameter

n written to the Location Engine.

The actual parameter n value written to the

Location Engine is an integer index value

selected from a lookup table shown in Table 2.

Refer to section 2.1.2.1.3 in order to find the

value for n to be used.

CC2431 Data Sheet (Rev. 2.01) SWRS034B

Page 7 of 15

1...4 5 678 9 10...16

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与CC2431ZRTC相关器件

型号	品牌	获取价格	描述	数据表
CC2431ZRTCR	TAOS	获取价格	System-on-Chip for 2.4 GHz ZigBee/ IEEE 802.15.4 with Location Engine
CC2431ZRTCRG3	TI	获取价格	SPECIALTY TELECOM CIRCUIT, QCC48, 7 X 7 MM, GREEN, QFN-48
CC24500N	POWEREX	获取价格	Super Fast Recovery Dual Diode Modules 50 Amperes/300-600 Volts
CC2450D1U	ETC	获取价格	RELAY SSR DUAL 50A ZERO PNL MNT
CC2450D1UH	CRYDOM	获取价格	Trigger Output SSR, 2-Channel, 4000V Isolation, ROHS COMPLIANT, PLASTIC PACKAGE-8
CC2450D1UR	ETC	获取价格	RELAY SSR DUAL 50A RNDM PNL MNT
CC2450D1URH	CRYDOM	获取价格	Solid State Relay
CC2450D1V	ETC	获取价格	RELAY SSR DUAL 50A ZERO PNL MNT
CC2450D1VH	ETC	获取价格	RELAY SSR DUAL 50A ZERO PNL MNT
CC2450D1VR	CRYDOM	获取价格	Trigger Output SSR, 2-Channel, 4000V Isolation, ROHS COMPLIANT, PLASTIC PACKAGE-8

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