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TLE7810G Datasheet, PDF (12/53 Pages) Infineon Technologies AG – Integrated double low-side switch, high-side/LED driver, hall supply, wake-up inputs and LIN communication with embedded MCU (16kB Flash) | |||
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TLE7810G
Operating Modes
4.3
SBC Active Mode âLIN Sleepâ
In SBC Active Mode âLIN Sleepâ the SBCâs current consumption is reduced by disabling the LIN transceiver.
This also means that the internal pull-up resistor of the LIN transceiver is turned off in SBC Active Mode âLIN
Sleepâ. During this mode the LIN transceiver remains its wake-up capability in order to react on a remote frame or
wake-up pulse (specified in LIN Specification V2.0) from the master node or other slave nodes. In case of a wake-
up event via LIN message the (internal) RxD is pulled âlowâ and the âbus wake-up bitâ within the SPI status word
is set. However, the LIN transceiver needs to be activated by switching to âSBC Active Modeâ.
4.4
LIN Receive-Only Mode (âLIN RxD-Onlyâ)
The LIN Receive-Only Mode (âLIN RxD-Onlyâ) is designed for a special test procedure to check the bus
connections. Figure 5 shows a network consisting of 5 nodes. Node 1 is the LIN master node, the others are LIN
slave nodes. If the connection between node 1 and node 3 shall be tested, the nodes 2, 4 and 5 are switched into
LIN Receive-Only Mode. Node 1 and node 3 are in Active Mode. If node 1 sends a message (âremote frameâ),
node 3 is the only node which is physically able to reply to the remote frame. The other nodes have their outputs
drivers disabled.
The main difference between the SBC Active Mode and the LIN Receive-Only Mode is that the LIN transmit
stage is automatically turned-off in LIN Receive-Only-Mode. However, the LIN receiver is still active in both modes.
5
4
1
3
2
Figure 5 Network Diagram âLIN Receive-Only Modeâ
Data Sheet
12
Rev. 3.01, 2008-04-15
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