MICRF505DEV1【PDF 19/42 页】KIT DEV RADIOWIRE 850-950MHZ

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Micrel

Transceiver Sync/Non-Synchronous Mode

MICRF505BML/YML

A6..A0

0000000

0000110

0000111

D7

LNA_by

-

BitRate_clkS1

D6

PA2

Mod_clkS2

BitRate_clkS0

D5

PA1

Mod_clkS1

RefClk_K5

D4

PA0

Mod_clkS0

RefClk_K4

D3

Sync_en

BitSync_clkS2

RefClk_K3

D2

Mode1

BitSync_clkS1

RefClk_K2

D1

Mode0

BitSync_clkS0

RefClk_K1

D0

Load_en

BitRate_clkS2

RefClk_K0

Sync_en

0

0

1

1

State

Rx: Bit

synchronization off

Tx: DataClk pin off

Rx: Bit

synchronization on

Tx: DATACLK pin on

Comments

Transparent reception of

data

Transparent transmission

of data

Bit-clock is generated by

transceiver

Bit-clock is generated by

transceiver

When Sync_en = 1, it will enable the bit

synchronizer in receive mode. The bit synchronizer

clock needs to be programmed, see chapter Bit

synchronizer. The synchronized clock will be set out

on pit DATACLK.

In transmit mode, when Sync_en = 1, the clock

signal on pin DATACLK is a programmed bit rate

clock. Now the transceiver controls the actual data

rate. The data to be transmitted will be sampled on

rising edge of DATACLK. The micro controller can

therefore use the negative edge to change the data

to be transmitted. The clock used for this purpose,

BITRATE_CLK, is programmed in the same way as

the modulator clock and the bit synchronizer clock:

MICRF505 is defined as “Master” and provides a

data clock that allows users to utilize low cost micro

controller reference frequency.

The data interface is defined in such a way that all

user actions should take place on falling edge and is

illustrated Figure 9 and 10. The two figures illustrate

the relationship between DATACLK and DATAIXO

in receive mode and transmit mode.

MICRF505 will present data on rising edge and the

“USER” sample data on falling edge in receive

mode.

DATAIXO

f BITRATE_CLK =

f XCO

Refclk_K ? 2 (7- BitRate_clkS )

DATACLK

where:

f BITRATE_CLK : The clock frequency used to

control the bit rate, should be equal to the bit

rate (bit rate of 20 kbit/sec requires a clock

requency of 20kHz)

f XCO : Crystal oscillator frequency

Refclk_K: 6 bit divider, values between 1

and 63

BitRate_clkS: Bit rate setting, values

between 0 and 6

Data Interface

The MICRF505 interface can be divided in to two

separate interfaces, a “programming interface” and a

“Data interface”. The “programming interface” has a

three wire serial programmable interface and is

described in chapter Programming.

The “data interface” can be programmed to sync-

/non-synchronous mode. In synchronous mode the

Figure 10. Data interface in Receive Mode

The User presents data on falling edge and

MICRF505 samples on rising edge in transmit mode.

DATAIXO

DATACLK

Figure 11. Data interface in Transmit Mode

When entering transmit mode it is important to keep

DATAIXO in tri-state from the time Tx-mode is

entered until user starts sending data. The data is

provided directly to the modulation circuit and

violation of this may/will cause abnormal behavior.

Depending upon the chosen FSK modulation, some

sort of encoding might be needed. The different

modulation types and encoding is described in

chapter Frequency modulation.

October 2006

19

M9999-103106

+1 408-944-0800

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相关代理商/技术参数

MICRF505DEV1 制造商:Micrel Inc 功能描述:KIT MICRF505 EVALUATION

MICRF505L 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:850MHz and 950MHz ISM Band Transceiver

MICRF505LYML 制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述:

MICRF505LYML TR 功能描述:射频收发器 850MHz to 950MHz, 2.25V to 5.5V FSK Transceiver with +10dBm Power Amplifier RoHS:否制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray

MICRF505YML 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER SMD MLF32 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER, SMD, MLF32 制造商:Micrel Inc 功能描述:433/915MHZ ITRANSCEIVER, SMD, MLF32; Frequency Min:850MHz; Frequency Max:950MHz; Modulation Type:FSK; Sensitivity dBm:-111dBm; Data Rate:200Kbps; Supply Voltage Min:2V; Supply Voltage Max:2.5V; RF IC Case Style:MLF; No. of Pins:32; ;RoHS Compliant: Yes

MICRF505YML TR 功能描述:射频收发器 850MHz to 950MHz, 2.0V to 2.5V FSK Transceiver with +10dBm Power Amplifier RoHS:否制造商:Atmel 频率范围:2322 MHz to 2527 MHz 最大数据速率:2000 Kbps 调制格式:OQPSK 输出功率:4 dBm 类型: 工作电源电压:1.8 V to 3.6 V 最大工作温度:+ 85 C 接口类型:SPI 封装 / 箱体:QFN-32 封装:Tray

MICRF505YML-TR 功能描述:IC RF TxRx Only General ISM < 1GHz 850MHz ~ 950MHz 32-VFQFN Exposed Pad, 32-MLF? 制造商:microchip technology 系列:- 包装:剪切带（CT）零件状态:有效类型:仅限 TxRx 射频系列/标准:通用 ISM < 1GHz 协议:- 调制:FSK 频率:850MHz ~ 950MHz 数据速率（最大值）:200kbps 功率 - 输出:10dBm 灵敏度:-111dBm 存储容量:- 串行接口:SPI GPIO:- 电压 - 电源:2 V ~ 2.5 V 电流 - 接收:8.6mA ~ 13.5mA 电流 - 传输:14mA ~ 28mA 工作温度:-40°C ~ 85°C 封装/外壳:32-VFQFN 裸露焊盘，32-MLF? 标准包装:1

MICRF506 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:410MHz and 450MHz ISM Band Transceiver