AT86RF230_09 ATMEL [ATMEL Corporation], AT86RF230_09 Datasheet - Page 10

• Manufacturer Part Number: AT86RF230_09
• Description: Low Power 2.4 GHz Transceiver for ZigBee, IEEE 802.15.4, 6LoWPAN, RF4CE and ISM
• Manufacturer: ATMEL [ATMEL Corporation]

6 Microcontroller Interface
10
AT86RF230
This section describes the AT86RF230 to microcontroller interface. The interface
comprises a slave SPI and additional control signals, see Figure 6-1. The SPI timing
and protocol are described.
Figure 6-1. Microcontroller to AT86RF230 Interface
Microcontrollers with a master SPI, such as Atmel’s AVR family, interface directly to the
AT86RF230. The SPI is used for Frame Buffer and register access. The additional
control signals are connected to the GPIO/IRQ interface of the microcontroller. Table
6-1 introduces the radio transceiver I/O signals and their functionality.
Table 6-1. Signal Description of Microcontroller Interface
Microcontroller
Signal
MOSI
MISO
SCLK
CLKM
IRQ
SLP_TR
RST
SEL
GPIO1/CLK
GPIO2/IRQ
GPIO3
GPIO4
Master
SCLK
MOSI
MISO
SEL
Description
SPI select signal, active low
SPI data (master output slave input) signal
SPI data (master input slave output) signal
SPI clock signal
AT86RF230 clock output, usable as:
AT86RF230 interrupt request signal
AT86RF230 multi purpose control signal (functionality is state-depended):
AT86RF230 reset signal, active low
- Microcontroller clock source
- High precision timing reference
- Sleep/Wakeup
- TX start
- Controls CLKM output
SLP_TR
CLKM
MOSI
MISO
SCLK
SEL
RST
IRQ
AT86RF230
Slave
SEL
MOSI
MISO
SCLK
CLKM
IRQ
SLP_TR
RST
5131E-MCU Wireless-02/09