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| L6360 Datasheet, PDF (19/65 Pages) STMicroelectronics – IO-Link communication master transceiver IC | |||
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L6360
6.1.5
Device configuration
When the I2C microcontroller cell is disabled, the SDA and SCL ports revert to being
standard I/O port pins.
On the L6360, the SDA output is an open drain pin.
Mode selection
Possible data transfer formats are:
â The master transmitter transmits to the slave receiver. The transfer direction is not
changed (see Figure 5).
â The slave receiver acknowledges each byte.
â The master reads data from the slave immediately after the first byte (see Figure 6). At
the moment of the first acknowledge, the master transmitter becomes a master receiver
and the slave receiver becomes a slave transmitter.
This first acknowledge is still generated by the slave.
Subsequent acknowledges are generated by the master. The STOP condition is generated
by the master which sends a not-acknowledge (A) just prior to the STOP condition.
Figure 5. A master transmitter addressing a slave receiver with a 7-bit address
(the transfer is not changed)
3 3, !6% !$$2%33
27 ! $!4! ! $!4!
!.! 0
@ WRITE
$ATA TRANSFERR ED
N BYTES ACKNOWLEDGE
FROM MASTER TO SLAVE
FROM SL AVE TO MASTER
! AC KNOWLEDGE 3 $! ,/7
.! NOT ACKNOWLEDGE 3$! ()'(
3 34!24 C ONDITION
0 34/0 CONDITION
!-
Figure 6. A master reads data from the slave immediately after the first byte
3 3,!6% !$$2%33 27 ! $!4! ! $!4! !.! 0
@ READ
$ATA TRANSFERRED
N BYTES ACKNOWLEDGE
FROM MASTER TO SLAVE
FROM SLAVE TO MASTER
! ACKNOWLEDG E 3 $! ,/7
.! NOT AC K NOWLEDGE 3$! ()'(
3 34!24 CONDITION
0 34/0 CONDIT ION
!-
Doc ID 022817 Rev 2
19/65
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