参数资料
型号: AT86RF230-ZU
厂商: ATMEL CORP
元件分类: 网络接口
英文描述: ZigBee/IEEE 802.15.4-Transceiver
中文描述: DATACOM, INTERFACE CIRCUIT, PQCC32
封装: 5 X 5 MM, 0.50 MM PITCH, GREEN, PLASTIC, MO-220VHHD-6, QFN-32
文件页数: 24/50页
文件大小: 445K
代理商: AT86RF230-ZU
24
AT86RF230
5131A-ZIGB-06/14/06
Both calibration routines will be initiated automatically when the PLL is turned on. Additionally, the center frequency
calibration is running when the PLL is programmed to a different channel (register 0x08 bits [4:0]). If the PLL is not
turned off for a long time, the control loops should be manually initiated from time to time. The calibration interval
depends on environment temperature variations but should not be longer than 5 min.
6.8. Automatic Filter Tuning
The filter-tuning unit is a separate building block within the AT86RF230. A calibration cycle is initiated automatically
when entering the TRX_OFF state from either the SLEEP, RESET or P_ON states. The result of the calibration is
the 6-bit word FTNV, and is written to the register 0x18 (FTN_CTRL).
The filter-tuning value FTNV is used to provide a stable SSBF transfer function and PLL loop-filter time constant
independent of temperature effects and part-to-part variations.
It is possible to trigger the calibration algorithm manually by setting the register bit FTN_START = 1.
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相关代理商/技术参数
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AT86RF230-ZU SL176 制造商:Atmel Corporation 功能描述:
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AT86RF231 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Low power 2.4 GHz Transceiver for ZigBee, IEEE 802.15.4, and ISM Applications
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