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參數(shù)資料
| 型號(hào)： | TRC102 |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 400-1000MHz RF Transceiver |
| 中文描述： | 400 - 1000MHz的射頻收發(fā)器 |
| 文件頁數(shù)： | 28/40頁 |
| 文件大?。?/td> | 449K |
| 代理商： | TRC102 |
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28
Power Management Register
[POR=8208h]
Bit Bit Bit Bit Bit Bit Bit Bit
15 14 13 12 11 10
1
0
0
0
0
0
The Power Management Register enables/disables the following:
Receiver chain
Transmit Chain
Baseband Circuit
PLL
Power Amplifier
Synthesizer
Crystal Oscillator
Low battery Detect Circuit
Wake-up Timer
Clock Output
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
Power Management Register
.
Bit [7] – Receiver Chain Enable
: This bit enables the entire receiver chain when set. The receiver chain
comprises the baseband circuit, synthesizer, and crystal oscillator.
Bit [6] – Baseband Circuit Enable
: This bit enables the baseband circuit when set. The baseband
circuit, synthesizer, and oscillator work together to demodulate and recover the data transmitted so the
synthesizer (Bit 4) and oscillator (Bit 3) must be enabled at the same time as the baseband circuits in
order to receive data. This bit can be disabled to conserve current consumption.
Bit [5] – Transmit Chain Enable
: This bit enables the entire transmit chain when set. The transmit chain
consists of the power amplifier, synthesizer, oscillator, and transmit register. When the transmit chain and
transmit register is enabled, any data in the transmit register is shifted out and transmission is started.
Bit [4] – Synthesizer Enable
: This bit enables the synthesizer when set. The synthesizer contains the
PLL, oscillator, and VCO for controlling the channel frequency. This must be enabled when either the
transmitter is enabled or the receiver is enabled. The oscillator also must be enabled to provide the
reference frequency for the PLL. On power-up the synthesizer performs a calibration automatically. If
there are significant changes in voltage or temperature, recalibration can be performed by simply
disabling the synthesizer and re-enabling it.
Bit [3] – Crystal Oscillator
: This bit enables the oscillator circuit when set. The oscillator provides the
reference signal for the synthesizer when setting the transmit or receive frequency of use.
Bit [2] – Low Battery Detector
: This bit enables the battery voltage detect circuit when set. The battery
detector can be programmed to 32 different threshold levels. See
Battery Detect Threshold and Clock
Output Register
section for programming.
Bit [1] – Wake-up Timer Enable
: This bit enables the wake-up timer when set. See
Wake-up Timer
Period Register
section for programming the wake-up timer interval value.
Bit [0] – Clock Output Disable
: This bit disables the oscillator clock output when set. On chip reset or
power up, clock output is enabled so that a processor may begin execution of any special setup
sequences as required by the designer. See
Battery Detect Threshold and Clock Output Register
section
for programming details.
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
9
1
8
0
RXEN
BBEN
TXEN
SYNEN
OSCEN
LBDEN WKUPEN
CLKEN
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