Renesas RL78 Series User Manual page 633

16-bit single-chip microcontrollers

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15.3.2 Interface block

This block incorporates an SPI as an internal interface with the MCU.

15.3.3 RF memory block

This block contains SRAM of 16 bits × 1664. This block is accessed from the MCU via the internal interface. Figure

15-3 shows the RF memory map.

The RF memory area is used to control the events and timing of the baseband and specify the transmit/receive packet

processing by events, and is used as the buffer for the status of the transmit/receive packet and the transmit/receive data.

The PHY block register area has registers for setting the PHY block operation and notifying events. The baseband control

memory map areas through access by the Bluetooth Low Energy protocol stack from Renesas.

15.3.4 RF control register block

This block consists of register groups that control the entire analog block. Access to RF control registers is set by the

Bluetooth Low Energy protocol stack made by Renesas.

15.3.5 Modem block

This block mainly consists of modulators and demodulators.

(1) Modulator

Performs GFSK modulation.

(2) Demodulator

Performs FSK demodulation.

R01UH0515EJ0120 Rev.1.20

Dec 16, 2016

Figure 15-3. RF Memory Map

Cannot be used

RF memory area

(1664 x 16 bits)

Cannot be used

RF control register area

(Retention register)

Cannot be used

RF control register area

Cannot be used

Baseband control register area

Access to this area is prohibited.

CHAPTER 15 RF TRANSCEIVER

Rl78/g1d R5f11agg R5f11agh R5f11agj