EIB-TP-UART-IC データシートの表示（PDF） - Siemens AG
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EIB-TP-UART-IC Datasheet PDF : 26 Pages
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2 Modes of Operation
2.1 Interface to the HOST Controller
TP - UART - IC
Analog - Digital -
EIB
Part
Part
Normal Mode:
Bus Coupler IDLE = HIGH
Mode:
TxD3
RxD3
IDLE = LOW
TP-UART-IC
TxD
HOST -
Controller
RxD
IDLE = HIGH
IDLE = LOW
2.2 Selection of Different Modes of Operation
It is possible to choose two different modes of operation: the normal mode and the analog
mode. To work in one of those modes you have to adjust the mode control pins as it is
shown in following table, in which is also demonstrated the usage of other pins:
Operating
Mode Control Pins
Other Pins
Modes
Normal Mode
Mode0
(Pin 14)
1
Mode1
(Pin 15)
1
Testmode
(Pin 16)
0
TSTin_BDS
(Pin 4)
= 1: 9.600 Baud
= 0: 19.200 Baud
TSTout_TW
(Pin 19)
= 1: Temp. Warning1)
--> TxO disabled
= 0: Temp. is OK
Analog Mode
1
0
0
do not care!
= 1: Temp. warning1)2)
(à 19.200 Baud) --> TxO disabled
= 0: Temp. is OK
1)After a Temperature Warning was recognized, a second must at least be maintained until the next
telegram is sent.
2)Transmission is stopped immediately by the TP_UART_IC.
2.2.1 Normal Mode
In the ‘normal’operation mode both parts, digital and analog part, are working. The Idle-level
on the UART-interface is 1.
(As it is shown in the above standing figure, in chapter 2.1)
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reserved.
25.15.10.41.33a
25.10.01
page 8
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