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参数资料
| 型号： | DR-TRC101-315-DK |
| 厂商： | RFM |
| 文件页数： | 31/42页 |
| 文件大小： | 0K |
| 描述： | RFIC TRANCEIVER DEVELOPMENT KIT |
| 产品变化通告： | RFIC Obsolescence 15/Sept/2009 |
| 标准包装： | 1 |
| 类型： | 收发器，SRR |
| 频率： | 315MHz |
| 适用于相关产品： | TRC101-315 |
| 已供物品： | 2 个板，2 根天线，电池，线缆，CD |
| 其它名称： | 583-1051 |
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Battery Detect Threshold and Clock Output Register [POR=C000h]
Bit
15
1
Bit
14
1
Bit
13
0
Bit
12
0
Bit
11
0
Bit
10
0
Bit
9
0
Bit
8
0
Bit
7
CLK2
Bit
6
CLK1
Bit
5
CLK0
Bit
4
LBD4
Bit
3
LBD3
Bit
2
LBD2
Bit
1
LBD1
Bit
0
LBD0
The Battery Detect Threshold and Clock Output Register configures the following:
?
?
Low Battery Detect Threshold
Output Clock frequency
The Low Battery Threshold is programmable from 2.2V to 5.3V using the following equation:
VT = (LBD[4..0] / 10) + 2.2 (V)
where LBD[4..0] is the decimal value 0 to 31.
Bit [15..8] - Command Code : These bits are the command code that is sent serially to the processor that
identifies the bits to be written to the Battery Detect Threshold and Clock Output Register.
Bit [7..5] – Clock Output Frequency : These bit set the output frequency of the on-board clock that may
be used to run an external host processor. See Table 15 below.
TABLE 15.
Output Clock
Frequency
CLK2
CLK1
CLK0
(MHz)
1
1.25
1.66
2
2.5
3.33
5
10
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Bit [4..0] – Low Battery Detect Value : These bits set the decimal value as used in the equation above to
calculate the value of the battery detect threshold voltage. When the battery level falls 50mV below this
value, the LBD bit (5) in the status register is set indicating that the battery level is below the programmed
threshold. This is useful in monitoring discharge sensitive batteries such as Lithium cells.
The Low Battery Detect can be enabled by setting the LBDEN bit (2) of the Power Management Register
and disabled by clearing the bit.
The Clock Output can be enabled by setting the CLKEN bit (0) of the Power Management Register and
disabled by clearing the bit.
www.RFM.com
Email: info@rfm.com
Page 31 of 42
?by RF Monolithics, Inc.
TRC101 - 4/8/08
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