The technical characteristics can change without notice. AUR°EL S.p.A doesn’t assume the respons
AUR°EL S.p.A.
Via Foro dei Tigli, 4 - 47015 Modigliana (FC)
Tel.: +390546941124 – Fax: +390546941660
http://www.aurel.it
5.2
Digital interface
The Digital Interface is shown in Figure 2. It includes:
•
A four pin Serial Peripheral Interface (SPI).
•
A Custom microcontroller with built in CODEC, FIFO
•
Two
RAMs
(Program and Registers).
•
One
ROM
and its Boot machine.
The SPI can operate at up to 10MHz for reading and writing to the configuration (
(
RAM1
) memories.
The custom microcontroller drives an interrupt pin (
of the EM9209 (e.g., that a packet has bee
functionality allows the host microcontroller to
mode.
The RAM memories are reset through internal POR.
5.2.1
Baseband microcontroller
The baseband custom microcontroller is the
modes of the EM9209 through RAM2
RXFIFO operations. Furthermore, it configures
from the demodulator (what is commonly referred to as the link
execute different subroutines which are handling
Those different subroutines are stored in a
and activated through SPI interface.
There are various communication subroutines available for EM9209 (either high sensitivity or normal
sensitivity). Most communication subroutines will set the EM9209
and turn on the Receiver. A simple
back to Standby mode with crystal oscillator enabled.
The technical characteristics can change without notice. AUR°EL S.p.A doesn’t assume the responsibility to the damages caused by an improper use of the
47015 Modigliana (FC) – ITALY
Fax: +390546941660
The Digital Interface is shown in Figure 2. It includes:
Serial Peripheral Interface (SPI).
ontroller with built in CODEC, FIFO’s and timers.
(Program and Registers).
and its Boot machine.
The SPI can operate at up to 10MHz for reading and writing to the configuration (
ontroller drives an interrupt pin (IRQ) which can be programmed to indicate the status
that a packet has been sent or received or that auto calibration has finished). This
controller to complete other operations or even enter its own low power
The RAM memories are reset through internal POR.
Figure 2: Digital interface
controller is the central digital control system of the EM9209. It manages all
RAM2 register memory and controls the RF transceiver and
operations. Furthermore, it configures digital data for transmission and processes packets
from the demodulator (what is commonly referred to as the link layer). The micro
nes which are handling auto-calibration, communication (and FIFO control).
Those different subroutines are stored in a ROM memory and are loaded in the RAM1
and activated through SPI interface.
There are various communication subroutines available for EM9209 (either high sensitivity or normal
communication subroutines will set the EM9209 frequency synthesizer in Receive mode
d turn on the Receiver. A simple communication subroutine allows the EM9209 to transmit and to go
back to Standby mode with crystal oscillator enabled.
RTX-24EM
User guide
bility to the damages caused by an improper use of the device.
12/11/2019 - Rev. B
Fax: +390546941660 Page 7
The SPI can operate at up to 10MHz for reading and writing to the configuration (
RAM2
) and program
) which can be programmed to indicate the status
calibration has finished). This
complete other operations or even enter its own low power
central digital control system of the EM9209. It manages all
register memory and controls the RF transceiver and TXFIFO or
digital data for transmission and processes packets received
layer). The microcontroller is able to
communication (and FIFO control).
RAM1 program memory
There are various communication subroutines available for EM9209 (either high sensitivity or normal
frequency synthesizer in Receive mode
communication subroutine allows the EM9209 to transmit and to go
