TLE6240GP Datasheet, PDF (11/23 Pages) Infineon Technologies AG – Smart 16-fold Low-Side Switch

Data Sheet TLE 6240 GP
In the following section the different control bytes will be descriped. X used within the control
byte means:
X = L: Command is valid for channels 1 to 8
X = H: Command is valid for channels 9 to 16
1/6. LLLL XXXX - Diagnosis only
By clocking in this control byte, it is possible to get pure diagnostic information (two bits per
channel) in accordance with Figure 1 (page 14). 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.
Example for two consecutive chip select cycles:
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
2/7. HHLL XXXX - Reading back of the eight inputs and ‘1-bit Diagnosis’ provided
If the TLE 6240 GP is used as bare die in a hybrid application, it is necessary to know if proper
connections exist between the µC-port and parallel inputs. By entering ‘HHLL’ as the control
word, the first eight bits of the SO give the state of the parallel inputs, depending on the µC
signals. By comparing the IN-bits with the corresponding µC-port signal, the necessary con-
nection between the µC and the TLE 6240 GP can be verified - i.e. ‘read back of the inputs’.
The second 8-bits fed out at the serial output contains ‘1-bit’ fault information of the outputs (H
= no fault, L = fault ). In the expression given below for the output byte, ‘FX’ is the fault bit for
channel X.
MSB
LSB
IN1_"2_"IN_"1_"1 _"IN_"1_"0 _"I_"N9 _"IN_"4_"IN_"3_"IN_"2_"I_"N_"1_! FX_"F_"X_"F_"X_"F_"X_"FX_""FX_"F_"X_"F_"X_"! : Serial Output byte
Parallel Input Signals
Fault Bits Channels 1 to 8 or 9 to 16
V3.1
Page 11
26.Aug 2002