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PDF IFX1051LE Data sheet ( Hoja de datos )
| Número de pieza | IFX1051LE | |
| Descripción | Industrial High Speed CAN-FD Transceiver | |
| Fabricantes | Infineon | |
| Logotipo |  |
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Industrial High Speed CAN-FD
Transceiver
CAN with Flexible Data-Rate
IFX1051LE
Preliminary Data Sheet
Rev. 0.92, 2015-07-28
Standard Power
1 page  
PRELIMINARY
2 Block Diagram
Transmitter
7
CANH
6
CANL
Driver
Temp-
protection
Timeout
Mode
control
Receiver
Normal-mode receiver
IFX1051LE
Block Diagram
3
VCC
5
VIO
1
TxD
8
RM
4
RxD
GND 2
VCC/2 =
Bus-biasing
Figure 1 Functional block diagram
Preliminary Data Sheet
5
Rev. 0.92, 2015-07-28
5 Page 
IFX1051LE
PRELIMINARY
Functional Description
4.3.1
Power-down State
Independent of the transmitter supply VCC and of the RM input pin, the IFX1051 is in power-down state when the
digital supply voltage VIO is turned off (see Figure 5).
In the power-down state the input resistors of the receiver are disconnected from the bus biasing VCC/2. The CANH
and CANL bus interface of the IFX1051 is floating and acts as a high-impedance input with a very small leakage
current. The high-ohmic input does not influence the “recessive” level of the CAN network and allows an optimized
EME performance of the entire HS CAN network (see also Table 2).
4.3.2
Forced Power-save Mode
The forced power-save mode is a fail-safe mode to avoid any disturbance on the HS CAN bus, while the IFX1051
faces a loss of the transmitter supply VCC.
In forced power-save mode, the transmitter and the normal-mode receiver are turned off and therefore the
transceiver IFX1051 can not disturb the bus media.
The RxD output pin is permanently set to logical “high”. The bus biasing is floating (details see Table 2).
The forced power-save mode can only be entered when the transmitter supply VCC is not available, either by
powering up the digital supply VIO only or by turning off the transmitter supply in normal-operating mode or in
receive-only mode (see Figure 5). While the transceiver IFX1051 is in forced power-save mode the RM pin is
disabled.
4.3.3
Power-up
The HS CAN transceiver IFX1051 powers up if at least the digital supply VIO is connected to the device. By default
the device powers up in normal-operating mode, due to the internal pull-down resistor on the RM pin to GND.
In case the device needs to power-up in receive-only mode, the RM pin needs to be pulled active to logical “high”
and the supplies VIO and VCC have to be connected.
By supplying only the digital power supply VIO the IFX1051 powers up in forced power-save mode (see Figure 5).
Preliminary Data Sheet
11
Rev. 0.92, 2015-07-28
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet IFX1051LE.PDF ] | |
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