TLE 7269G Infineon Technologies, TLE 7269G Datasheet - Page 9

• Manufacturer Part Number: TLE 7269G
• Manufacturer: Infineon Technologies

Specifications of TLE 7269G

• Packages: PG-DSO-14
• Transmission Ratemax: 20.0 kbit/s
• Quiescent Current (max.): < 10 µA sleep mode
• Bus Wake-up Capability: Yes
• Additional Features: 2 x LIN trx, INH, EN, WK, Vio
• Wake-up Inputs: Bus wake-up + wake-up pin

The TLE7269G has 3 major operation modes:
•
•
•
The Normal Operation mode contains 3 sub-operation modes, which differentiate by the slew rate control of the
LIN Bus signal (see
Sub-operation modes with different slew rates on the BUS1,BUS2 pins:
•
•
•
The TLE7269G contains 2 separate LIN transceivers, which are able to operate in two independent LIN networks
with two different data transmission rates. The operation mode of the TLE7269G is selected by the EN pin and the
TxD1 pin. Selecting the operation mode applies to the whole device. Transceiver1 and transceiver2 are always
set to the same operation mode and sub-operation mode (see
Table 2
Mode
Sleep
Stand-By Low
Normal
Operation
1) To indicate the Wake-Up sources via the RxD pins the power supply
2) The TxD1 input needs an external termination to indicate a “High” or a “Low” signal. The external termination could be a
4.2
The TLE7269G enters the Normal Operation mode after the microcontroller sets EN to “High” (see
Normal Operation mode both LIN bus receivers and both LIN bus transmitters are active. Data from the
microcontroller is transmitted to the LIN bus1 or LIN bus2 via the TxD1 or TxD2 pin, the receiver detects the data
stream on the LIN bus1 or bus2 and forwards it to the RxD1 or RxD2 output pins. In Normal Operation mode, the
INH1 pin and the INH2 are “High” (set to
Normal Slope mode, Low Slope mode and the Flash mode are Normal Operation modes and in these sub-modes
the behavior of the INH pin and the bus termination is the same. To set the device into one of these 3 sub-modes
the TxD1 pin and the EN pin are used for the sub-operation mode selection. In order to avoid any bus disturbance
during a mode change, the output stages of the TLE7269G are disabled and set to recessive state during the
mode change procedure. To release the TLE7269G for data communication on the LIN bus1 and LIN bus2, the
TxD1 and TxD2 pins need to be set to “High” for the time
Data Sheet
Stand-By mode
Normal Operation mode
Sleep mode
Low Slope mode, for data transmission rates up to 10.4 kBaud
Normal Slope mode, for data transmission rates up to 20 kBaud
Flash mode, for programming of the external microcontroller
pull-up resistor or an active microcontroller output.
EN
Low
High
Operating modes
Normal Operation Mode
INH1
INH2
Floating Low
High
High
Figure
4).
TxD1
TXD2
Low
High
Low
High
2)
RxD1
RxD2
High
resistive
Low
High
Low
High
V
S
) and the bus termination is set to 30 kΩ for both integrated transceivers.
1)
High
Impedance
30 kΩ
(typical)
30 kΩ
(typical)
Termination
LIN Bus
9
t
to,rec
.
Figure
Comments
No Wake-Up request detected
RxD1 “Low” after local or bus Wake-Up (BUS 1,
BUS 2)
RxD2 “Low” after bus Wake-Up on Bus2. RxD2
“High” on all other Wake-Up and Power-Up events.
RxD1 “High” after Power-Up
TxD1 strong pull down after local Wake-Up (WK
pin)
TxD1 weak pull down after bus Wake-Up (BUS1,
BUS2) or Power-Up
RxD1, RxD2 reflects the signal on the BUS1,
BUS2
TxD1,TxD2 driven by the microcontroller
V
IO
2)
has to be present
4).
2)
Functional Description
Rev. 1.2, 2007-11-13
TLE7269G
Figure
4). In