CHAPTER 3. TECHNICAL DESCRIPTION
GÖPEL electronic GmbH
G_Lin_Node_InternalVBat_Disable
. In this case, the external voltage (VBAT
ext
) must be fed via the predefined
pins on the front connector. With
G_Lin_Node_InternalVBat_Enable
the internal supply is switched on again.
The
1 k
Ω
pull up resistor
corresponds to the LIN Master Bus termination and can be activated by software with
the
G-API
command
G_Lin_PullUpResistor_Enable
.
With
G_Lin_PullUpResistor_Disable
.
When
deactivated (slave mode), the internal terminating resistor of the LIN transceiver becomes active (30 k
Ω
).
For K-Line the following transceiver is used:
•
L9637D
The following specifications apply to the transceiver:
Table 3.16: Electrical characteristics for K-Line
Symbol
Parameter
Min.
Typ.
Max.
Unit
Comment
Transfer rate
9.6
kBit/s
VBAT
int
Internal battery voltage
12
V
switchable
VBAT
ext
External battery voltage
12
27
V
3.8.3 FlexRay
The
Multibus Controller 6281
supports a total of two FlexRay interfaces. Since a FlexRay transceiver can map either
the A or B channel, two slots are required per interface. For the total of two possible FlexRay interfaces, a total of 4
slots are occupied. The FlexRay controller is fixed in the FPGA.
For FlexRay the following transceiver is used:
•
TJA1081BTS
The following specifications apply to the transceiver:
Table 3.17: Electrical characteristics for FlexRay
Symbol
Parameter
Min.
Typ.
Max.
Unit
Comment
Transfer rate
2.5
10
MBit/s
per channel
VBAT
int
Internal battery voltage
12
V
switchable
VBAT
ext
External battery voltage
5
12
48
V
R
FR
Termination resistance
100
Ω
switchable
The FlexRay interface is generally supplied with an
internal 12 V voltage
(VBAT
int
). If other voltage levels
are used, the internal voltage can be switched off individually by software with the
G-API
command
G_FleyRay_Node_InternalVBat_Disable
. In this case, the external voltage (VBAT
ext
) must be fed via the
predefined pins on the front connector. With
G_FlexRay_Node_InternalVBat_Enable
the internal supply is
switched on again.
The
100
Ω
bus terminating resistor
of the transceiver can be deactivated by software with the
G-API
command
G_FlexRay_Node_BusTermination_Disable
.
With
G_FlexRay_Node_BusTermination_Enable
the bus
termination resistor is reactivated.
G PCIe / G PXIe / G CAR 6281
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