TP-UART Datasheet, PDF (19/26 Pages) Siemens Semiconductor Group – TP-UART-IC

TP-UART-IC
3.2.3.2 Services from UART
The first character of each service which is sent to the host controller is the control field. The
control field contains the information about the TP - UART-Service. There are 3 types of
services which can be send to the host controller: the EIB-Layer-2-Services, the Immediate-
Acknowledge-Services and the special TP – UART - Services. The EIB-Layer-2-Services
contain information about their class and also a flag which contains the information whether
the LPDU is a repeated one, or not. The Immediate-Acknowledge-Services include
information about a successful sending. The TP – UART - Services are to inform the host
controller about the communication state or to reset the communication.
Control Field
76543210
Layer-2 Services
repeat flag = 0: repeated L_DATA frame
repeat flag = 1: not repeated
1 0 r 1 c1 c0 0 0 _{L_DATA.ind}
0 0 r 1 c1 c0 0 0 _{L_LONG_DATA.ind}
1 1 1 1 0 0 0 0 _{L_Poll_Data.ind}
Immediate Acknowledge Services
1 1 0 0 1 1 0 0 _{Acknowledge frame}
0 0 0 0 1 1 0 0 _{NotAcknowledge frame}
1 1 0 0 0 0 0 0 _{Busy frame}
EIBUART-Control-Services
0 0 0 0 0 0 1 1 _{Reset-Indication}
x x x x x 1 1 1 _{State-Response/Indication}
x 0 0 0 1 0 1 1 _{L_DATA.confirm}
c1 c0
00
10
01
11
system priority
alarm priority
high priority
low priority
x = 1 Positive Confirm x = 0 Negative Confirm
3.2.3.2.1 Layer-2-Services
The Layer-2-Services include all standard EIB Link-Layer-Services. The control fields are
followed by the data of the EIB frame. All bytes received on the EIB are immediately sent to
the host controller. The host controller has to detect a end of packet time out by supervising
the EOP gap of 2 to 2.5 bittimes.
control field Hexadecimal data link frame type
FFR1 cc00 long/normal
FF11 0000
FF01 0000
FF11 1000
FF01 1000
FF11 0100
FF01 0100
FF11 1100
FF01 1100
30/B0_Hex
10/90_Hex
38/B8_Hex
18/98_Hex
34/B4_Hex
14/94_Hex
3C/BC_Hex
1C/9C_Hex
L_DATA request
L_DATA request
L_DATA request
L_DATA request
L_DATA request
L_DATA request
L_DATA request
L_DATA request
1111 0000
F0_Hex
L_POLLDATA request
The frame format 01 is not supported.
class
system
system
alarm
alarm
high
high
normal
normal
system
Repeat flag
(0 = repeated)
Not repeated
Repeated
Not repeated
Repeated
Not repeated
Repeated
Not repeated
Repeated
For a complete description of the Link-Layer service see the EIB - Handbook.
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25.15.10.41.33a
25.10.01
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