參數(shù)資料
型號(hào)： MICRF610
廠商： Micrel Semiconductor,Inc.
英文描述： 868-870 MHz ISM Band Transceiver Module
中文描述： 868-870 MHz ISM頻帶收發(fā)模塊
文件頁(yè)數(shù)： 3/19頁(yè)
文件大小： 303K
代理商： MICRF610
Micrel, Inc.
MICRF620
December 2005
11
M9999-120205
Programming Summary
Use CS, SCLK, and IO to get access to the control
registers in MICRF620.
SCLK is user-controlled.
Write to the MICRF620 at positive edges
(MICRF620 reads at negative edges).
Read from the MICRF620 at negative edges
(MICRF620 writes at positive edges)
After power-on: Write to the complete set of
control registers.
Address field is 7 bits long. Enter msb first.
R/W bit is 1 bit long (“1” for read, “0” for write)
Address and R/W bit together make 1 octet
All control registers are 8 bits long. Enter/read msb
in every octet first.
Always write 8 bits to/read 8 bits from a control
register. This is the case for registers with less
than 8 used programming bits as well.
Writing: Bring CS high, write address and R/W bit
followed by the new values to fill into the
addressed control register(s) and bring CS low for
loading, i.e., activation of the new control register
values.
Reading: Bring CS high, write address and R/W
bit, set IO as an input, read present contents of the
addressed control register(s), bring CS low and
set IO an output.
Frequency Synthesizer
A6…A0
D7
D6
D5
D4
D3
D2
D1
D0
0001010
-
A0_5
A0_4
A0_3
A0_2
A0_1
A0_0
0001011
-
N0_11
N0_10
N0_9
N0_8
0001100
N0_7
N0_6
N0_5
N0_4
N0_3
N0_2
N0_1
N0_0
0001101
-
M0_11
M0_10
M0_9
M0_8
0001110
M0_7
M0_6
M0_5
M0_4
M0_3
M0_2
M0_1
M0_0
0001111
-
A1_5
A1_4
A1_3
A1_2
A1_1
A1_0
0010000
-
N1_11
N1_10
N1_9
N1_8
0010001
N1_7
N1_6
N1_5
N1_4
N1_3
N1_2
N1_1
N1_0
0010010
-
M1_11
M1_10
M1_9
M1_8
0010011
M1_7
M1_6
M1_5
M1_4
M1_3
M1_2
M1_1
M1_0
The frequency synthesizer consists of a voltage-controlled
oscillator (VCO), a crystal oscillator, phase select
prescaler, programmable frequency dividers and a phase-
detector. The length of the N, M, and A registers are 12,
12 and 6 respectively. The N, M, and A values can be
calculated from the formula:
() ()
A
N
31
4
f
A
N
31
f
M
f
RF
VCO
XCO
PhD
+
×
=
+
×
=
,
1
≤ A < N
PhD: Phase detector comparison frequency
fXCO: Crystal oscillator frequency
fVCO: Voltage controlled oscillator frequency
fRF: Input/output RF frequency
There are two sets of each of the divide factors (i.e. A0
and A1). Storing the ‘0’ and the ‘1’ frequency in the 0- and
the 1 registers respectively, does the 2-FSK. The receive
frequency must be stored in the ‘0’ registers.
Crystal Oscillator (XCO)
Adr
D7
D6
D5
D4
D3
D2
D1
D0
0001001
‘0’
‘1’
XCOtune4
XCOtune3
XCOtune2
XCOtune1
XCOtune0
The crystal oscillator is a reference for the RF output
frequency and the LO frequency in the receiver. It is
possible to tune the internal crystal oscillator by switching
in internal capacitance using 5 tune bits XCOtune4 –
XCOtun0. The benefit of tuning the crystal oscillator is to
eliminate the initial tolerance and the tolerance over
temperature and aging. By using the crystal tuning feature
the noise bandwidth of the receiver can be reduced and a
higher sensitivity is achieved.
When XCOtune4 –
XCOtune0 = 0 no internal capacitors are connected to the
crystal pins. When XCOtune4 – XCOtune0 = 1 all of the
internal capacitors are connected to the crystal pins.
Figure 5 shows the tuning range.
相關(guān)PDF資料
PDF描述
MIK0-55S 55 CONTACT(S), POLYETHYLENE, FEMALE, CIRCULAR CONNECTOR, CRIMP, RECEPTACLE
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MICRF610_0608 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:868-870MHz ISM Band Transceiver Module
MICRF610DEV1 制造商:Micrel Inc 功能描述:DEVELOPMENT KIT TRANSCEIVER 868MHZ
MICRF610TR 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:868-870 MHz ISM Band Transceiver Module
MICRF610Z 功能描述:IC RF MOD 868-870MHZ 11.5X14.1MM RoHS:是 類別:RF/IF 和 RFID >> RF 收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數(shù)據(jù)傳輸率 - 最大:54Mbps 調(diào)制或協(xié)議:* 應(yīng)用:* 功率 - 輸出:-3dBm 靈敏度:- 電源電壓:2.7 V ~ 3.6 V 電流 - 接收:* 電流 - 傳輸:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 工作溫度:-25°C ~ 85°C 封裝/外殼:68-TQFN 裸露焊盤(pán) 包裝:管件
MICRF610Z TR 功能描述:IC RF MOD 868-870MHZ 11.5X14.1MM RoHS:是 類別:RF/IF 和 RFID >> RF 收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:30 系列:- 頻率:4.9GHz ~ 5.9GHz 數(shù)據(jù)傳輸率 - 最大:54Mbps 調(diào)制或協(xié)議:* 應(yīng)用:* 功率 - 輸出:-3dBm 靈敏度:- 電源電壓:2.7 V ~ 3.6 V 電流 - 接收:* 電流 - 傳輸:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲(chǔ)容量:- 天線連接器:PCB，表面貼裝 工作溫度:-25°C ~ 85°C 封裝/外殼:68-TQFN 裸露焊盤(pán) 包裝:管件
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