E981.03 Datasheet, PDF (23/51 Pages) ELMOS Semiconductor AG – Autonomous MAC and individual physical address

KNX/ EIB TRANSCEIVER
PRODUCTION DATA - JAN 15, 2015
E981.03
6.9 Addressed Mode
Each KNX / EIB device has it's own unique individual ad-
dress in a network. The E981.03 can be configured with
an individual node (physical) address. In this mode, the
processor load will be reduced by the autonomous KNX
protocol handling.
Activation
• after a complete address upload
• activated VALID bit in KNX_ADR_STAT register
Properties
• incoming Frames will be analyzed
• frames with a physical address will be answered
with an acknowledge automatically, if the stored
address matched
• all frames with a group address will be answered
automatically with an acknowledge.
• the host can suppress an automatic acknowledge
generation
Deactivation
• Reset / Power up Sequence
• deactivated VALID bit in KNX_ADR_STAT register
6.10 Trigger Functionality
Activation
• after upload of a trigger frame to E981.03 and up-
load of a trigger telegram mask to E981.03
• entering busy or Normal Mode.
Deactivation
• deactivated BUF bit in TRIGGER register.
Properties
WK pin is a tristate pin (tristate push pull) the E981.03
forces in Reset / Power up sequence WK to ground level.
E981.03 applies high level at pin WK after either
• a trigger telegram was received correctly or
• a broadcast telegram was received or
• an individually addressed telegram was received
with address equals node address (optional if con-
figured)
• the generated trigger pulse has a length of t_TRIGGER,pw.
The received telegram can be read from telegram re-
ceive buffer until the next telegram arrives on the KNX/
EIB bus. Thus the host processor can get information
about trigger telegram contents after restarting the
node.
Attention: To be able to get the trigger message in all
conditions use the communication interface UART with
115.2KBd or SPI.
Trigger Function is not available in Bus Monitoring
Mode and Analog Mode.
6.11 Alarm Functionality
During any Communication Mode (but not in Analog
Mode) an alarm sequence can be used to signal improp-
er node state to the system via KNX / EIB bus by send-
ing an alarm telegram.
Activation
• after a complete alarm telegram upload and alarm
condition (SETVCC pin open or forced to V_V33I/2 =
V ) _{VSETVCC,ALARM} is pending
Deactivation
• deactivated BUF bit in ALARM_STAT register
Properties
• an alarm telegram is send on KNX bus
• active RESET will be delay transmission, both alarm
telegram buffer and alarm state register are not
changed
The KNX/ EIB to UART receive path remains active dur-
ing alarm sequence.
Elmos Semiconductor AG reserves the right to change the detail specifications as may be required to permit improvements in the design of its products.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0046E.03
23/51