TLE6240GP_10 Datasheet, PDF (24/37 Pages) Infineon Technologies AG – Smart 16-Channel Low-Side Switch

TLE6240GP
Smart 16-Channel Low-Side Switch
Control of the Device
6.1.5 Control Byte - Detailed description
In the following section the different control bytes will be described. X used within the control byte means:
Table 3
MSB
Control Byte - Channel Group selection
Comment
X
X
X
X
L
L
L
L Command is valid for Channels 1 to 8
X
X
X
X
H
H
H
H Command is valid for Channels 9 to 16
Control Byte
The following Control Byte descriptions are referring to the Overview Table 2.
6.1.5.1 Control Byte No.1 and 6
Table 4
MSB
Control Byte No. 1 to 6
Comment
L
L
L
L
X
X
X
X Diagnosis only
Control Byte
By clocking in this control byte, it is possible to get pure diagnostic information (two bits per channel) in accordance
with Figure 21. The data bits are ignored, so that the state of the outputs are not influenced. This command is only
active once unless the next control command is again “Diagnosis only”. Diagnostic information can be read out at
any time with no change of the switching conditions.
CS
SI
LLLL LLLL XXXX XXXX
SO H H H H H H H H H H H H H H H H
SI command: Diagnosis only for channels 1 to 8. No change of
the output states
SO diagnosis: No fault, normal function of channels 1 to 8 or 9 to
16 depending on previous SI command
CS
SI
LLLL HHHH XXXX XXXX
SO
DIAG_1
SI command: Diagnosis only for channels 9 to 16. No change of
the output states _⇒ DIAG_2 provided during next chip select cycle
SO diagnosis: 2 bit diagnosis performed for channels 1 to 8
Figure 16 Example for two Consecutive Chip Select Cycles
Data Sheet
24
Rev.3.3, 2010-02-15