- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371009 > MC13180 (MOTOROLA INC) 2.4 GHz Low Power Wireless Transceiver IC for Bluetooth⑩ Applications PDF資料下載
參數(shù)資料
| 型號： | MC13180 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | 2.4 GHz Low Power Wireless Transceiver IC for Bluetooth⑩ Applications |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQCC48 |
| 封裝： | PLASTIC, QFN-48 |
| 文件頁數(shù)： | 35/58頁 |
| 文件大?。?/td> | 992K |
| 代理商： | MC13180 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁當(dāng)前第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁
Functional Description
MOTOROLA
MC13180
Product Preview
35
4.24 Transmit ROM Operation
The MC13180 uses a look
-
up table (LUT or Transmit ROM) to shape incoming transmit data bits and
produce a Gaussian filtered mask with BT=0.5. The value of the current data bit, along with knowledge of
the previous two bits, determines a unique trajectory for shaping. Only four unique trajectories are required
to implement this filter and due to the symmetrical nature of the Gaussian response, these trajectories can
be reduced to a single quadrant. Furthermore, without compromising accuracy, this table can be reduced to
only 11 values.
The output of the LUT is fed to the accumulators of the fractional synthesizer. The seven MSBs are
eventually fed to the second port of the main VCO during transmit operation (see Figure 23). For receive
operation, the output of the LUT is constantly held to the value contained in R1C1.
These 11 trajectory constants are listed in Table 17 (see also Figure 4, Register Map). The actual value to
place in the LUT is calculated as:
LUT RxCx
b10
= (f
dev
/f
ref
External) x 2
16
x (RxCx constant)
This number is then rounded and converted to binary:
LUT RxC
xb2
= INT((LUT RxCx
b10
+2)/4)
where the INT function is the integer portion of the result.
As an example for calculating the LUT value for R4C2 and f
ref
External = 13 MHz:
LUT R
4
C
2b10
= (157.5kHz/13.0MHz) x 2
16
x 0.5229292198 = 415.2
LUT R
4
C
2b2
= INT((415.2+2)/4)
b10
= INT(104.3)
b10
= 104
b10
or 011010000
b2
or 68
b16
Table 19 lists all values of RxCx for supported reference frequencies.
4.25 M-Dual Port Multiplier and B-Dual Port Multiplier
For proper operation of the dual
-
port synthesizer, it is necessary to maintain a constant deviation injection
at the input of Port 2 of the VCO. As can be seen from the Transmit ROM operation and Figure 23, the
output of the LUT is fed to a digital multiplier prior to being presented to the input of the modulation DAC.
Since the LUT values decrease proportionately with input reference frequency, the multiplier must scale
Table 17.
LUT RxCx Constants
R1C1
0.9999739537
R2C2
0.9980246857
R2C3
0.9911665663
R2C4
0.9678427310
R3C1
0.1881990082
R3C2
0.5249014674
R3C3
0.7660791186
R3C4
0.9043672052
R4C2
0.5229292198
R4C3
0.7572459756
R4C4
0.8722099597
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC13280AY | 80/100 MHz Video Processor |
| MC13281A | 80/100 MHz Video Processor |
| MC13281B | 80/100 MHz Video Processor |
| MC13283 | 130 MHz VIDEO PROCESSOR WITH OSD INTERFACE |
| MC13283P | 130 MHz VIDEO PROCESSOR WITH OSD INTERFACE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC13181 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Wireless Power Management Integrated Circuit |
| MC13181R2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Wireless Power Management Integrated Circuit |
| MC13190 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:2.4 GHz Short-Range, Low-Power Transceiver |
| MC13190D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:2.4 GHz Short-Range, Low-Power Transceiver |
| MC13190FC | 制造商:Freescale Semiconductor 功能描述:RF TRANSCEIVER AM 2.75V 32-PIN QFN EP TRAY - Tape and Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。