參數(shù)資料
型號(hào)： ATA5744N-TKSY
廠商： ATMEL CORP
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： SPECIALTY TELECOM CIRCUIT, PDSO20
封裝： LEAD FREE, SSO-20
文件頁(yè)數(shù)： 20/20頁(yè)
文件大?。?/td> 316K
代理商： ATA5744N-TKSY
9
4893A–RKE–11/05
ATA5744
4.6
Basic Clock Cycle of the Digital Circuitry
The complete timing of the digital circuitry and the analog filtering is derived from one clock.
According to Figure 4-3, this clock cycle TClk is derived from the crystal oscillator (XTO) in com-
bination with a divider. The division factor is controlled by the logical state at pin MODE.
According to chapter 'RF Front End', the frequency of the crystal oscillator (f
XTO) is defined by
the RF input signal (f
RFin) which also defines the operating frequency of the local oscillator (fLO).
Figure 4-3.
Generation of the Basic Clock Cycle
Pin MODE can now be set in accordance with the desired clock cycle T
Clk. TClk controls the fol-
lowing application-relevant parameters:
Timing of the analog and digital signal processing
IF filter center frequency (f
IF0)
Most applications are dominated by two transmission frequencies: f
Send = 315 MHz is mainly
used in USA, f
Send = 433.92 MHz in Europe. In order to ease the usage of all TClk-dependent
parameters, the electrical characteristics display three conditions for each parameter.
Application USA
(f
XTO = 4.90625 MHz, MODE = L, TClk = 2.0383 s)
Application Europe
(f
XTO = 6.76438 MHz, MODE = H, TClk = 2.0697 s)
Other applications
(T
Clk is dependent on fXTO and on the logical state of pin MODE. The electrical characteristic
is given as a function of T
Clk).
The clock cycle of some function blocks depends on the selected baud rate range (BR_Range)
which is defined by the pins BR_0 and BR_1. This clock cycle T
XClk is defined by the following
formulas for further reference:
BR_Range = BR_Range0:
T
XClk = 8 × TClk
BR_Range1:
T
XClk = 4 × TClk
BR_Range2:
T
XClk = 2 × TClk
BR_Range3:
T
XClk = 1 × TClk
DVCC
XTO
MODE
16
15
14
T
Clk
f
XTO
Divider
:14/:10
L : USA(:10)
H: Europe(:14)
相關(guān)PDF資料
PDF描述
ATA5756-6DPJ SPECIALTY TELECOM CIRCUIT, PDSO10
ATA6285N-PNPW SPECIALTY TELECOM CIRCUIT, QCC32
ATA6285N-PNQW SPECIALTY TELECOM CIRCUIT, QCC32
ATCB-B01-RM50 INTERCONNECTION DEVICE
ATEP-161100-SMA-P-01 INTERCONNECTION DEVICE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATA5744N-TKSY 19 功能描述:射頻接收器 RF DATA CONTROL RECEIVER RoHS:否 制造商:Skyworks Solutions, Inc. 類(lèi)型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel
ATA5745 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:UHF ASK/FSK Receiver
ATA5745_07 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:UHF ASK/FSK Receiver
ATA5745C-PXPW 制造商:Atmel Corporation 功能描述:SWITCHABLE RX-IC FOR RKE/TPMS (433MHZ) - Tape and Reel 制造商:Atmel Corporation 功能描述:IC RX UHF ASK/FSK 433MHZ 24QFN
ATA5745CPXQW 制造商:Atmel Corporation 功能描述:Switchable Rx-IC for RKE/TPMS (433MHz)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*