参数资料
型号: SM1212E433
厂商: Semtech
文件页数: 62/77页
文件大小: 0K
描述: RF EVAL FOR SX1212 433MHZ ISM
标准包装: 1
类型: 收发器,ISM
频率: 433MHz
适用于相关产品: SX1212E
已供物品: 模块,天线,电源,软件
SX1212
ADVANCED COMMUNICATIONS & SENSING
6.4. Receiver Configuration parameters - RXParam
The detailed description of the RXParam register is given in Table 29.
Table 29: RXParam Register Description
Name
Bits
Address (d)
RW
Description
Typical single sideband bandwidth of the passive low-pass filter.
PassiveFilt = 0000
0001
0010
0011
0100
0101
0110
65 kHz
82 kHz
109 kHz
137 kHz
157 kHz
184 kHz
211 kHz
PassiveFilt
7-4
16
r/w
0111
234 kHz
1000
1001
1010
1011
1100
1101
1110
1111
262 kHz
321 kHz
378 kHz (d)
414 kHz
458 kHz
514 kHz
676 kHz
987 kHz
Sets the receiver bandwidth. For BW information please refer to
f c = f 0 + 200 kHz .
f xtal MHz 1 + Val ( ButterFilt )
ButterFilt
3-0
16
r/w
sections 3.4.5 (FSK) and 3.4.6 (OOK).
.
12 . 8 MHz 8
(d): “0011” => f C = 200 kHz
f 0 = 200 kHz .
F xtal MHz 1 + Val ( PolypFilt _ center )
PolypFilt_center
7-4
17
r/w
Central frequency of the polyphase filter (100kHz recommended):
.
12 . 8 MHz 8
(d):“0011” => f 0 = 100 kHz
Res
3-0
17
r/w
Reserved
(d): “1000”
Enable of the polyphase filter, in OOK Rx mode:
PolypFilt_on
7
18
r/w
0
off (d)
1
on
Bit synchronizer: control in Continuous Rx mode:
Bitsync_off
6
18
r/w
0
on (d)
1
off
Sync word recognition:
Sync_on
5
18
r/w
0
off (d)
1
on
Sync word size:
00
8 bits
Sync_size
4-3
18
r/w
01
16 bits
10
11
24 bits
32 bits (d)
Number of errors tolerated in the Sync word recognition:
00
0 error (d)
Sync_tol
2-1
18
r/w
01
1 error
10
11
2 errors
3 errors
Res
0
18
r/w
Reserved
(d):”0”
Rev 2 – June 18th, 2009
Page 62 of 77
www.semtech.com
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