- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385001 > TMS37122 (Texas Instruments, Inc.) TIRIS Automotive Devices Analog Front End IC TMS37122 PDF資料下載
參數(shù)資料
| 型號： | TMS37122 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | TIRIS Automotive Devices Analog Front End IC TMS37122 |
| 中文描述： | 提里斯汽車設(shè)備的模擬前端集成電路TMS37122 |
| 文件頁數(shù)： | 49/73頁 |
| 文件大小： | 1189K |
| 代理商： | TMS37122 |
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頁當(dāng)前第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頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁
CHAPTER 3
49
Application
3.1
Passive Entry Function
The standard application of 3D-AFE is the Passive (Keyless) Entry function. The car driver
approaches the car and triggers the Base Station by pulling the door handle or by another trig-
ger mechanism. The Base Station transmits the Passive Entry (PE) Wake Pattern, a Command
and a Challenge using typically an outdoor Antenna, for example in the outside mirror. The
Antenna is driven by a LF Transceiver, which is typically activated with an active low signal
called TXCT- (see Figure 28).
It is assumed that the Identification Device is in Standby Mode (WDEEN=high). During
Wake-up Time the IC internal wake (WAKEI) will be activated if the threshold VWAKEA
is exceeded at one or more antennas. The first WAKEI signal determines the receive channel.
During the Waiting Time the Base Station will start modulation while sending the Passive En-
try Wake Pattern. The internal clock CLKI will be active during this period.
If the received PE Wake Pattern is equal to the PE Wake Pattern in the EEPROM, the RF level
check with VWAKEB will NOT be performed and the 3D-AFE will activate the output
WAKE at once. This will cause the Microcomputer of the Identification Device to wake-up
after an eventually μC Wake Delay. Depending on the required time the Base Station should
insert an active period between Wake Pattern and Command transmission. The digitized am-
plitude modulation is output at the EOBA and demodulation is done by the Microcomputer.
For this purpose the CLKA signal can be used as reference, which is available at output
EOBA/M.
The Command sent to the Microcomputer must include an information that a Passive Entry
action is requested.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMS37134 | Entry Transponder IC |
| TMS4161 | GRAPHICS SYSTEM PROCESSOR |
| TMS3469910000 | GRAPHICS SYSTEM PROCESSOR |
| TMS4461 | GRAPHICS SYSTEM PROCESSOR |
| TMSSTDB10 | GRAPHICS SYSTEM PROCESSOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMS37122DPWRG4 | 制造商:Texas Instruments 功能描述:3D Analog Front-end, TITL |
| TMS37145TEAIE | 制造商:Texas Instruments 功能描述: |
| TMS37145TEAIEG | 制造商:Texas Instruments 功能描述: |
| TMS37157IRSARG4 | 功能描述:RFID應(yīng)答器 Pass Lo Freq Interf Dev W/ EEPROM RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| TMS3734DFNR | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。