TLE6263 Datasheet, PDF (8/40 Pages) Infineon Technologies AG – LS CAN, LDO and HS Switch

Final Datasheet TLE 6263
6.1 Operation Modes
The TLE 6263 offers four different operation modes that are controlled via the SPI
interface (NSTB= SPI Input Bit3, ENT=SPI Input Bit2): the normal operation mode, the
receive-only mode, the V_bat stand-by mode and the sleep operation mode. Please see
the state diagram (figure 3).
Normal and Receive only Mode
In the normal operation mode both is possible, receiving and transmitting of messages,
in the receive-only mode (RxD-only mode) the output stages are disabled which doesn’t
allow the CAN controller to send a message to the bus. In the state diagram (figure 3),
V_CC is the status of the voltage regulator.
SPI Input Bits:
IBit2 = ENT
IBit3 = NSTB
Power
Down
Start Up
Power Up
Normal Mode
NSTB ENT V_CC
1
1 ON
2) _NSTB
1
ENT
1
2) _ENT
0
2) _ENT
1
2) _NSTB
0
ENT
0
or
V_CC
V_RT
2) _NSTB
0
RxD-Only
NSTB ENT V_CC
1
0 ON
2) _NSTB
0
2) _ENT
1
Sleep Mode
Sleep
NSTB ENT V_CC
0
1 OFF
HS switch = OFF
2) _NSTB
0
or
V_CC
V_RT
2) _NSTB
1
V_bat Stand-By
NSTB ENT V_CC
0
0 ON
RxD = LOW if a wake up
occured by WK1, WK2
or CAN message
1) _{after 500µs}
1) _{after 64ms}
HS cyclic
sense
NSTB ENT V_CC
0
1 ON
HS Switch = ON
V_bat Stand-By Mode
Wake Up =
transition on
WK1 or WK 2
for t > t_WU
or
CAN message
2) _ENT
1
1) _{after 64ms}
1) _{after 500µs}
HS cyclic
sense
NSTB ENT V_CC
0
1 OFF
HS Switch = ON
1) _{automatic repeated transition only if}
HS cycl sense feature is selected
by SPI IBit 4
2) _{NSTB and ENT are both SPI Input}
Bits (IBits)
Figure 3: State Diagram
V_bat stand-by mode and sleep mode
In the V_bat stand-by mode and sleep mode the RTL output voltage is switched to V_S.
Both modes are low power modes. In the sleep mode the whole application is switched
Version 2.08
8
2004-06-07