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参数资料
| 型号： | EM260-BBRD-128K-USART-R |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 29/50页 |
| 文件大小： | 0K |
| 描述： | EM260 BREAKOUT BOARD |
| 标准包装： | 12 |
| 类型： | 收发器，802.15.4/Zigbee |
| 频率： | 2.4GHz |
| 适用于相关产品： | EM260 |
| 其它名称： | 636-1026 |
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EM260
When the EM260 resets, it will assert the nHOST_INT signal, telling the Host that it has data. The Host should
request data from the EM260 as usual. The EM260 will ignore whatever command is sent to it and respond only
with two bytes. The first byte will always be 0x00 and the second byte will be the reset type as defined by
EmberResetType . This specialty SPI Byte is never used in another Response SPI Byte. If the Host sees 0x00
from the EM260, it knows that the EM260 has been reset. The EM260 will deassert the nHOST_INT signal
shortly after receiving a byte on the SPI and process all further commands in the usual manner. In addition to
the Host having control of the reset line of the EM260, the EmberZNet Serial Protocol also provides a
mechanism for a software reboot.
5.6.1
Bootloading the EM260
The SPI Protocol supports a Payload Frame called the Bootloader Frame for communicating with the EM260
when the EM260 is in bootloader mode. The EM260 can enter bootload mode through either an EZSP command
or holding one of two pins low while the EM260 exits reset. Both the nWAKE pin and the PTI_DATA pin are
capable of activating the bootloader while performing a standard EM260 reset procedure. Assert nRESET to
hold the EM260 in reset. While nRESET is asserted, assert (active low) either nWAKE or PTI_DATA and then
deassert nRESET to boot the EM260. Do not deassert nWAKE or PTI_DATA until the EM260 asserts nHOST_INT,
indicating that the EM260 has fully booted and is ready to accept data over the SPI Protocol. Once nHOST_INT
is asserted, nWAKE or PTI_DATA way be deasserted. Refer to document UG103.6, Ember Application
Development Fundamentals: Bootloading , for more information on the bootloader and the format of the
Bootloader Frame.
5.6.2
Unexpected Resets
The EM260 is designed to protect itself against undefined behavior due to unexpected resets. The protection is
based on the state of Slave Select since the inter-command spacing mandates that Slave Select must return to
idle. The EM260’s internal SPI Protocol uses Slave Select returning to idle as a trigger to reinitialize its SPI
Protocol. By always reinitializing, the EM260 is protected against the Host unexpectedly resetting or
terminating a transaction. Additionally, if Slave Select is active when the EM260 powers on, the EM260 will
ignore SPI data until Slave Select returns to idle. By ignoring SPI traffic until idle, the EM260 will not begin
receiving in the middle of a transaction.
If the Host resets, in most cases it should reset the EM260 as well so that both devices are once again in the
same state: freshly booted. Alternately, the Host can attempt to recover from the reset by recovering its
previous state and resynchronizing with the state of the EM260.
If the EM260 resets during a transaction, the Host can expect either a Wait Section timeout or a missing Frame
Terminator indicating an invalid Response.
If the EM260 resets outside of a transaction, the Host should proceed normally.
5.7
Transaction Examples
This section contains the following transaction examples:
SPI Protocol Version
EmberZNet Serial Protocol Frame-Version Command
EM260 Reset
Three-Part Transaction: Wake, Get Version, Stack Status Callback
Page 29
120-0260-000M Rev 1.1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EM260-DEV | 功能描述:KIT DEV FOR EM260 RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:InSight 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| EM260-RCM-USART-R | 功能描述:EM260 RCM BOARD RoHS:是 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:- 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
| EM260-RTR | 功能描述:IC ZIGBEE SYSTEM-ON-CHIP 40-QFN RoHS:是 类别:RF/IF 和 RFID >> RF 收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:30 系列:- 频率:4.9GHz ~ 5.9GHz 数据传输率 - 最大:54Mbps 调制或协议:* 应用:* 功率 - 输出:-3dBm 灵敏度:- 电源电压:2.7 V ~ 3.6 V 电流 - 接收:* 电流 - 传输:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 工作温度:-25°C ~ 85°C 封装/外壳:68-TQFN 裸露焊盘 包装:管件 |
| EM260-RTY | 功能描述:IC ZIGBEE SYSTEM-ON-CHIP 40-QFN RoHS:是 类别:RF/IF 和 RFID >> RF 收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:30 系列:- 频率:4.9GHz ~ 5.9GHz 数据传输率 - 最大:54Mbps 调制或协议:* 应用:* 功率 - 输出:-3dBm 灵敏度:- 电源电压:2.7 V ~ 3.6 V 电流 - 接收:* 电流 - 传输:* 数据接口:PCB，表面贴装 存储容量:- 天线连接器:PCB，表面贴装 工作温度:-25°C ~ 85°C 封装/外壳:68-TQFN 裸露焊盘 包装:管件 |
| EM260-USART-JMP-R | 功能描述:KIT JUMP START FOR EM260 RoHS:否 类别:RF/IF 和 RFID >> RF 评估和开发套件，板 系列:JumpStart 标准包装:1 系列:- 类型:GPS 接收器 频率:1575MHz 适用于相关产品:- 已供物品:模块 其它名称:SER3796 |
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