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| 型号： | XR18W750IL48-F |
| 厂商： | Exar Corporation |
| 文件页数： | 7/44页 |
| 文件大小： | 0K |
| 描述： | IC WIRELESS UART CTRLR 48QFN |
| 标准包装： | 260 |
| 功能： | 控制器 |
| RF 型： | 通用 |
| 次要属性： | I²C 接口 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 包装： | 托盘 |
| 其它名称： | 1016-1473 XR18W750IL48-F-ND |
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XR18W750
REV. 1.0.0
1.4.1
XR18W753 RF Transceiver
WIRELESS UART CONTROLLER
The XR18W753 is an RF Transceiver with frequency ranges of 868MHz - 954MHz and a data rate of 250kbps.
All of the Physical Layer Management Entity (PLME) registers to configure and control the XR18W753 can be
accessed via the I 2 C interface. See the XR18W753 datasheet for complete details.
1.4.2
External EEPROM
An external I 2 C EEPROM is required to store the firmware for the 8051 microprocessor and the parameters of
the Wireless UART chipset. The I 2 C EEPROM must have at least 32KB of memory.
1.4.2.1
EEPROM Parameters
The table below describes all of the parameters that are stored in the external I 2 C EEPROM.
T ABLE 1: EEPROM P ARAMATERS
P ARAMETER
Source ID
Destination ID
Baud Rate
Communication Mode
Channel Number (Frequency)
Number of Retries
Group ID
Power Level
XR18W753 address
Autobaud Detect
Power-up Mode
AES Security Key
B YTES
4
4
4
1
1
1
1
1
1
1
1
16
D ESCRIPTION
These bytes are sent in the packet preamble to identify who is sending the
packet in P2P mode.
These bytes are sent in the packet preamble to identify who is to receive
the packet in the P2P mode.
These 4 bytes store the default baud rate that the UART will be initialized
to during the next power-up.
This parameter selects the communication mode: P2P, P2M, Broadcast.
This byte stores the default or last used channel frequency of the
XR18W753 RF Transceiver.
This byte stores the number of times to re-transmit a packet when an ACK
is not received in P2P mode before giving up.
These bytes are compared by the recipient when a broadcast packet has
been received.
This byte stores the default power level for the XR18W753.
This byte stores the I 2 C address of the XR18W753.
This byte selects whether the device has the Autobaud Detect feature
enabled upon power-up.
This byte selects whether the device powers up in the command or the
data mode.
This parameter is used for as the encoding/decoding key in the AES
Engine.
2.0 COMMUNICATION MODES
2.1
Point-to-Point
Point-to-point communication is similar to two UARTs communicating via RS-232 or RS-422. The differences
being that the communication is now wireless and half-duplex. Each time a wireless data packet is
transmitted, the Wireless UART chipset waits until an ACK is received. If an ACK has not been received, the
Wireless UART chipset will re-transmit the packet. The Wireless UART chipset will attempt to re-transmit the
packet until the specified number of retries has been reached.
In this communication mode, the packet will only be received and an ACK will be sent if the two Wireless UART
chipsets are configured for the same frequency, with matching AES security keys and the Destination ID of the
packet matches the Source ID of the Wireless UART chipset.
7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR18W750IL48TR-F | 功能描述:UART 接口集成电路 XR18W750IL48TR-F RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| XR18W753 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER |
| XR18W753IL48 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE CHIP 868MHZ TO 956MHZ RF TRANSCEIVER |
| XR18W753IL48-F | 功能描述:射频接收器 UART RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel |
| XR18W753L48-0A-EB | 功能描述:界面开发工具 900MHz RF EVAL Board RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
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