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器件3D模型￥ 3.928
CC1101RGPR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
RF射频器件
封装:
QFN-20
描述:
TEXAS INSTRUMENTS CC1101RGPR 芯片, 射频收发器, QFN-20
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P20P34P71Hot
典型应用电路图在P25
原理图在P22
封装尺寸在P99
焊盘布局在P26
型号编码规则在P95
标记信息在P99
封装信息在P99P100
焊接温度在P8
功能描述在P2
技术参数、封装参数在P8P9P34
应用领域在P1P105
电气规格在P9
导航目录
CC1101RGPR数据手册
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CC1101
SWRS061I Page 35 of 98
12 Data Rate Programming
The data rate used when transmitting, or the
data rate expected in receive is programmed
by the MDMCFG3.DRATE_M and the
MDMCFG4.DRATE_E configuration registers.
The data rate is given by the formula below.
As the formula shows, the programmed data
rate depends on the crystal frequency.
XOSC
EDRATE
DATA
f
MDRATE
R
28
_
2
2_256
The following approach can be used to find
suitable values for a given data rate:
256
2
2
_
2
log_
_
28
20
2
EDRATE
XOSC
DATA
XOSC
DATA
f
R
MDRATE
f
R
EDRATE
If DRATE_M is rounded to the nearest integer
and becomes 256, increment DRATE_E and
use DRATE_M = 0.
The data rate can be set from 0.6 kBaud to
500 kBaud with the minimum step size
according to Table 25 below. See Table 3 for
the minimum and maximum data rates for the
different modulation formats.
Min Data
Rate
[kBaud]
Typical Data
Rate
[kBaud]
Max Data
Rate
[kBaud]
Data rate
Step Size
[kBaud]
0.6
1.0
0.79
0.0015
0.79
1.2
1.58
0.0031
1.59
2.4
3.17
0.0062
3.17
4.8
6.33
0.0124
6.35
9.6
12.7
0.0248
12.7
19.6
25.3
0.0496
25.4
38.4
50.7
0.0992
50.8
76.8
101.4
0.1984
101.6
153.6
202.8
0.3967
203.1
250
405.5
0.7935
406.3
500
500
1.5869
Table 25: Data Rate Step Size (assuming a
26 MHz crystal)
13 Receiver Channel Filter Bandwidth
In order to meet different channel width
requirements, the receiver channel filter is
programmable. The MDMCFG4.CHANBW_E and
MDMCFG4.CHANBW_M configuration registers
control the receiver channel filter bandwidth,
which scales with the crystal oscillator
frequency.
The following formula gives the relation
between the register settings and the channel
filter bandwidth:
ECHANBW
XOSC
channel
MCHANBW
f
BW
_
2)·_4(8
Table 26 lists the channel filter bandwidths
supported by the
CC1101
.
MDMCFG4.
CHANBW_M
MDMCFG4.CHANBW_E
00
01
10
11
00
812
406
203
102
01
650
325
162
81
10
541
270
135
68
11
464
232
116
58
Table 26: Channel Filter Bandwidths [kHz]
(assuming a 26 MHz crystal)
By compensating for a frequency offset
between the transmitter and the receiver, the
filter bandwidth can be reduced and the
sensitivity improved, see more in DN005 [17]
and in Section 14.1.
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