TLE6251-3G Datasheet, PDF (9/36 Pages) Infineon Technologies AG – High Speed CAN-Transceiver with Wake and Failure Detection

TLE6251-3G
Operation Modes
5
Operation Modes
Five different operation modes are available on TLE6251-3G. Each mode with specific characteristics in terms of
quiescent current, data transmission or failure diagnostic. For the mode selection the digital input pins EN and
NSTB are used. Both digital input pins are event triggered. Figure 4 illustrates the different mode changes
depending on the status of the EN and NSTB pins. A mode change via the mode selections pins EN and NSTB is
only possible if the power supplies V_CC, V_IO and V_S are activated.
EN -> 1
NSTB = 1
Normal Operation
mode
EN NSTB INH
1
1
On
EN -> 1
NSTB -> 1
EN -> 0
NSTB = 1
EN = 1
NSTB ->1
EN -> 0
NSTB -> 0
Receive Only
mode
EN NSTB INH
0
1
On
EN = 0
NSTB -> 1
EN = 0
NSTB -> 0
Stand-By
mode
EN NSTB INH
0
0
On
EN = 0
NSTB -> 1
VCC & VIO ON
EN -> 0
NSTB -> 1
EN -> 1
NSTB -> 0
EN = 1
NSTB -> 0
Go-To-Sleep
command
EN NSTB INH
1 0 On
EN -> 1
NSTB = 0
EN -> 0
t < thSLP
NSTB = 0
Power Down
Start – Up
Supply V_S
Supply V_CC within t < t_UV(VCC)
Supply V_IO within t < t_UV(VIO)
V_S > V_S,Pon
Under-voltage
on V_S
V_S < V_S,Poff
EN -> 1
NSTB -> 1
VCC & VIO ON
EN -> 0
t > thSLP
NSTB = 0
Sleep mode
EN NSTB INH
0
0
Off
thSLP
Timing important
for mode selection
Wake-Up Event
Bus-Wake:
t > tBUSdom
Local-Wake:
t > tWake
V_CC < V_CC,UV
t > t_UV(VCC)
Under-voltage
on V_CC
V_IO < V_IO,UV
t > t_UV(VIO)
Under-voltage
on V_IO
Figure 4 Operation Modes
Data Sheet
9
Rev. 1.1, 2011-06-06