E981.03 Datasheet, PDF(26/51 Page) ELMOS Semiconductor AG – Autonomous MAC and individual physical address

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E981.03 Datasheet, PDF (26/51 Pages) ELMOS Semiconductor AG – Autonomous MAC and individual physical address

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KNX/ EIB TRANSCEIVER

PRODUCTION DATA - JAN 15, 2015

E981.03

7.2 UART Service UART -> Host

Any service sent from E981.03 to host consists of one or more bytes. The first byte is the control field which identi-

fies UART service. The E981.03 can handle the following three different UART services:

â¢ KNX data link layer services are complete

â¢ immediate acknowledge service include information about sending state

â¢ UART control services are used to send requested information to the host controller or, in case of failures, a

state indication

Table 5. UART Service - E981.03 to Host

Service Name

UART control field

Hex Bin

Remarks / Description

followed by

76543210

acknowledge

(BUSY and NACK)

Reset.indication

L_Data.confirm

(negative)

acknowledge

(NACK)

L_Data telegram

(L_ExtData frame)

L_Data.confirm

(positive)

L_Data telegram

(L_Data frame)

acknowledge

(BUSY)

acknowledge

(ACK)

0x00

0x03

0x0B

0x0C

0x10

0x14

0x18

0x1C

0x30

0x34

0x38

0x3C

0x8B

0x90

0x94

0x98

0x9C

0xB0

0xB4

0xB8

0xBC

0xC0

0xCC

0000 0000

0000 0011

0000 1011

0000 1100

0001 0000

0001 0100

0001 1000

0001 1100

0011 0000

0011 0100

0011 1000

0011 1100

1000 1011

1001 0000

1001 0100

1001 1000

1001 1100

1011 0000

1011 0100

1011 1000

1011 1100

1100 0000

1100 1100

the preceding data tele-

gram is negative and busy

acknowledged by a combi-

nation of receiving nodes. 1)

indicate a Reset of the

E981.03

L_Data telegram negative

confirm:

the preceding data tel-

egram was either nega-

tive acknowledged (either

NACK or BUSY) by receiv-

ing node(s) or not acknowl-

edged at all.

the preceding data tele-

gram is negative acknowl-

edged by any of the receiv-

ing nodes. 1)

First Byte (Control field of

an frame which is received

on KNX bus. 3)

an extended data frame (L_

ExtData)

Each complete received

byte of the frame will be

transmitted. (End of Frame

indication will be a time gap

above

frame

tleUnARgT,ItBhG,RiXs

= 2.5ms.)

between

The

and 264 byte.

L_Data telegram positive

confirm:

the preceding data tel-

egram was positive ac-

knowledged (ACK) by the

receiving node

First Byte (Control field)

of an frame which is re-

ceived on KNX bus. 3)

a data frame (L_Data)

Each complete received

byte of the frame will be

transmitted. (End of Frame

indication will be a time gap

above

frame

tleUnARgT,ItBhG,RiXs

= 2.5ms.)

between

The

and 64 byte.

the preceding data tel-

egram is busy acknowl-

edged by any of the receiv-

ing nodes. 1)

the preceding data tel-

egram is positive acknowl-

edged by all of the receiv-

ing nodes. 1)

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

26/51

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