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参数资料
| 型号： | RI-RFM-006A |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | TIRIS RF-Module IC for Automotive |
| 中文描述： | 提里斯射频集成电路模块汽车 |
| 文件页数： | 7/20页 |
| 文件大小： | 148K |
| 代理商： | RI-RFM-006A |
Rev. 3.5
RI-RFM-006A
TIRIS
RF-Module IC for Automotive
Page 6 of 19
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Function and Operation
1. General
This RF-module IC counts on two operating modes:
Sending Mode - This mode is active when the “TXCT-“ pin is set to L-level. A remote
TIRIS
transponder can be charged up and ID code can be sent to that transponder in this mode.
Receiving Mode - This mode is active when the “TXCT-“ pin is set to H-level. FSK signals sent from a
remote
TIRIS
transponder are received and demodulated in this mode.
Therefore, by switching over these modes using an external controller, data communications with a
TIRIS
transponder can be made.
Note that this RF-module IC is exclusively designed to provide the user with a simple signal modulator-
demodulator (modem) function for data communications with a remote
TIRIS
transponder, based on the
appropriate data modulation-demodulation specifications. And therefore, it does not incorporate error
detection, data allotment nor other similar data processing functions in terms of protocol and data
formats.
(*) In both transmit and receive modes, this RF-module IC modulates and demodulates signals by logical
operation based on the incorporated master clock. This means that the modulating-demodulating
performance characteristics of this IC are directly affected by the frequency accuracy and variation of its
master clock (normal frequency is 17.1776 MHz). Therefore, the user is requested to select an oscillating
element or an external clock which is compatible with the remote
TIRIS
transponder to be used (see the
section describing the specifications “fexc”, “fL” and “fH”).
2. Sending Mode
In the Sending Mode, the frequency of the IC master clock (normal value: 17.1776 MHz) is divided
by 128. The resulting clock signal then has a frequency of 134.2 kHz (normal value). This resulting signal
is output as a composite signal for “TXHI” and “TXLO” terminals (pins) to drive the MOSFET which is
incorporated as an antenna resonance circuit driver, as illustrated below.
When the IC is in the Receiving Mode, its “TXHI” terminal is fixed at positive level and the “TXLO” at
high impedance. As a result, the output terminal “A” of the MOSFET used as an antenna resonance
circuit driver is fixed at negative level.
Note that when the IC is in the Sending Mode, its “RXDT-“ terminal is always fixed at positive level and
as a consequence, the IC’s FSK signal demodulator remains deactivated although data clock signals,
which are transmitted at a frequency resulting from division of the “A3IN” terminal signal frequency by
16, are output to the “RXCK”.
7
8
RI45538NS
TXLO
TXHI
Master clock frequency divided by 128
(Ref. frequency, resulting: 134.2 kHz)
"A"
MOSFET(PCH)
MOSFET(NCH)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RI-RFM-006A-00 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TIRIS RF-Module IC for Automotive |
| RI-RFM-006A-30 | 制造商:Rochester Electronics LLC 功能描述: |
| RI-RFM-007 | 制造商:TI 制造商全称:Texas Instruments 功能描述:HIGH PERFORMANCE LF RADIO FREQUENCY MODULE |
| RI-RFM-007B-00 | 功能描述:射频模块 LF Radio Frequency Module RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
| RI-RFM-007B-30 | 功能描述:射频模块 RFM Module High Perf RoHS:否 制造商:Linx Technologies 产品:Transceiver Modules 频带:902 MHz to 928 MHz 输出功率:- 15.5 dBm to + 12.5 dBm 接口类型:UART 工作电源电压:- 0.3 VDC to + 5.5 VDC 传输供电电流:38.1 mA 接收供电电流:22.7 mA 天线连接器类型:U.FL 最大工作温度:+ 85 C 尺寸:1.15 mm x 0.63 mm x 0.131 mm |
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