ATA8215_14 Datasheet, PDF (8/20 Pages) ATMEL Corporation – UHF ASK/FSK Receiver

2. System Functional Description
2.1 Overview
2.1.1
Service-based Concept
The Atmel^® ATA8210/15 is a highly configurable UHF receiver. The configuration is stored in an internal 1024-byte
EEPROM. The master system control is performed by firmware. General chip-wide settings are loaded from the EEPROM to
hardware registers during system initialization. During start-up of a receive mode the specific settings are loaded from the
EEPROM or SRAM to the current service in the SRAM and from there to the corresponding hardware registers.
A complete configuration set of the receiver is called “service” and includes RF settings, demodulation settings, and
telegram handling information. Each service contains three channels which differ in the RF receive frequencies.
The Atmel ATA8210/15 supports five services which can be configured in various ways to meet customer requirements.
Three service configurations are located in the EEPROM space. They are fixed configurations which should not be changed
during runtime.
Two service configurations are located in the SRAM space and can be modified by USER SW in a Flash application or by an
SPI command during IDLEMode.
A service consists of
● One service-specific configuration part
● Three channel-specific configuration parts
Further configurations for PollingMode and RSSI are available and can be modified in IDLEMode via an SPI command
and/or User SW.
Figure 2-1 gives an overview on the service based-concept.
Figure 2-1. Service-based Concept Overview
EEPROM
SRAM
EEPROM Polling Configuration
eepPollLoopConf
System
Initialization
SRAM Polling Configuration
pollConfig
Service 0
eepServices [0]
Channel 0 Channel 1 Channel 2
Service 1
eepServices [1]
Channel 0 Channel 1 Channel 2
Service 2
eepServices [2]
Channel 0 Channel 1 Channel 2
Service 3
sramServices [0]
Channel 0 Channel 1 Channel 2
SPI
Service 4
sramServices [1]
Channel 0 Channel 1 Channel 2
RSSI Threshold Configuration
for Each Channel
rssiThreshold [][]
Service S
currentService
Channel
Atmel ATA8210/15 Hardware
8
ATA8210/ATA8215 [SUMMARY DATASHEET]
9344CS–INDCO–09/14