ATMEGA64RZAV-10MU Atmel, ATMEGA64RZAV-10MU Datasheet - Page 45

• Manufacturer Part Number: ATMEGA64RZAV-10MU
• Description: MCU ATMEGA644/AT86RF230 44-QFN
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA64RZAV-10MU

• Frequency: 2.4GHz
• Modulation Or Protocol: 802.15.4 Zigbee
• Power - Output: 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Data Interface: PCB, Surface Mount
• Memory Size: 64kB Flash, 2kB EEPROM, 4kB RAM
• Antenna Connector: PCB, Surface Mount
• Package / Case: 44-VFQFN Exposed Pad
• Wireless Frequency: 2.4 GHz
• Interface Type: JTAG, SPI
• Output Power: 3 dBm
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFP770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Applications: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega64

8 Functional Description
8.1 Introduction - Frame Format
Figure 8-1 IEEE 802.15.4-2003 Frame Format – PHY Layer Frame Structure
Figure 8-2 IEEE 802.15.4-2003 Frame Format – MAC Layer Frame Structure
8.1.1 PHY Protocol Layer Data Unit (PPDU)
8.1.1.1 Synchronization Header (SHR)
5131E-MCU Wireless-02/09
Figure 8-1 provides an overview of the physical layer frame structure as defined by the
IEEE 802.15.4-2003 standard. Figure 8-2 shows details of the defined MAC layer frame
structure.
The SHR consists of a four-octet preamble field (all zero), followed by a single SFD
octet which has the predefined value 0xA7. When transmitting, the SHR is automatically
generated by the AT86RF230, and prefixed to the frame that has been read from the
Frame Buffer. The transmission of the SHR requires 160 µs (10 symbols). This allows
the microcontroller to initiate a transmission and to start downloading the frame
contents subsequently. Note, that in this case the SPI transfer rate must be equal or
faster than the PHY data rate.
During frame reception, the SHR is used for PHY synchronization purposes. In Basic
Operating Mode an RX_START interrupt is issued 8 µs after detection of the SFD field.
AT86RF230
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