Datasheet

Data Sheet TLE 6232 GP
V2.3 Page 2009-11-18
14
Description of the SPI Registers
(SPI Instructions: RD_DIAG)
Register:
DIAG_REG1
7 6 5 4 3 2 1 0
ST7 ST6 ST5 ST4 ST3 ST2 ST1 ST0
State of
Reset:
FFH
Access by
Controller:
Read only
Bit Name Description
7-6 DIA4 Diagnostic Bits of power stage 4
5-4 DIA3 Diagnostic Bits of power stage 3
3-2 DIA2 Diagnostic Bits of power stage 2
1-0 DIA1 Diagnostic Bits of power stage 1
Note: This byte is always clocked out (second SO-byte), except the SI control words says:
RD_SCON or RD_MUX. But: The content of the fault register will only be deleted if the control command
’RD_DIAG’ was clocked in and 16 clock pulses were counted.
Register:
DIA_REG2
7 6 5 4 3 2 1 0
Z Z F OT ST11 ST10 ST9 ST8
State of
Reset:
FFH
Access by
Controller:
Read only
Bit Name Description
7-6 Z Bit 7 and 6 are always tri-state
5 F Common error flag
4 OT Common over-temperature flag
3-2 DIA6 Diagnostic Bits of power stage 6
1-0 DIA5 Diagnostic Bits of power stage 5
Encoding of the Diagnostic (Status) Bits of the Power Stages
ST(2*x-1) ST(2*x-2) State of power stage x x = 1..6
1 1 Power stage o.k.
1 0 Overload, short circuit to battery (SCB) or over-temperature (OT)
0 1 Open load (OL)
0 0 Short circuit to ground (SCG)
Note: DIA_REG2 is always clocked out as first byte
F, OT Bit = 1: No Fault
F, OT Bit = 0: Fault, Over-temperature
The over-temperature bit is the latched result of an OR-operation out of the 6 signals of
the temperature sensor)
The general fault bit shows the fault occurrence at any of the outputs.
Reset of the Diagnostic Information
The diagnostic information will only be reset after the RD_DIAG command on the rising edge
of slave select or a reset signal is applied (RESET = low).