TP-UART-IC

The reproduction, transmission or use of this document or it‘s contents is not permitted without express written authority. All

rights, including right created by patent grant or registration of a utility model or design, are reserved. Technical changes

reserved.

25.15.10.41.33a

25.10.01

page

12

3.2.3.1.1 U_Reset.request-Service

Resets the TP-UART-IC to the initial state. At start-up the TP-UART-IC waits for a bus free

time-out before sending a U_Reset.indication-Service to the host controller. To be sure that

TP-UART-IC is in reset state the host controller has to wait for 50 ms and after that the

U_Reset.request-Service can be send.

7

6

5

4

3

2

1

0

0

0

0

0

0

0

0

1

3.2.3.1.2 U_State.request-Service

Requests the internal communication state from TP-UART-IC. The TP-UART-IC answers

with the communication state.

7

6

5

4

3

2

1

0

0

0

0

0

0

0

1

0

3.2.3.1.3 U_ActiveBusmon-Service

Activates the busmonitor mode. That means each byte which is received on the EIB is sent

through the TP-UART-IC as well as illegal control bytes and not used immediate ACK. The

TP-UART-IC is absolute quiet (not sending) on the EIB. The busmonitor mode can only left

by using the U_Reset.request-Service.

7

6

5

4

3

2

1

0

0

0

0

0

0

1

0

1

3.2.3.1.4 U_AckInformation-Service

The U_AckInformation-Service is to indicate if the device is addressed. This service must be

send latest 1,7 ms (9600 Baud) after receiving the address type octet of an addressed

frame. The nack- / busy- / addressed-bits set internal flags in the TP-UART-IC. The internal

NACK flag is also be set by the TP-UART-IC itself if it is detecting any frame error.

If the TP-UART-IC receive this service and the addressed bit is set it will generate an ACK-,

NACK- or BUSY-frame on the EIB depending on the settings of the NACK- / BUSY-flags.

UART-Control Field

7

6

5

4

3

2

1

0

0

0

0

1

0

x

x

X

AckInformation

1: Nack

1: Busy

1: Addr

0: NotAddr