Data Sheet TLE 6232 GP

V2.3

Page

2009-11-18

12

On a reading access the bit pattern of the data byte at the SPI input SI will be ignored. The

first SO byte sent out simultaneously by the TLE 6232 GP always contains the common fault

bit, the over-temperature bit and the diagnostic information of channels 6 and 5 (2 bits each).

Depending on the SI control byte, the second SO byte contains the requested information.

- Read back of SCON_REG (SCON bits 6 to 1 and two high bits)

- Read back of MUX_REG (MUX information for channel 6 to 1 and two high bits)

- Diagnostic information of channel 4 to 1 (2 bits per channel)

On a writing access always the full diagnostic information of the 6 channels (2 bit per channel)

and the over-temperature and common fault bit is performed.

Invalid instruction/access:

An instruction is invalid, if the following condition is fulfilled:

- an unused instruction code is detected (see tables with SPI instructions).

If an invalid instruction is detected, a writing access on a register of TLE6232 GP is not allow-

wed. In addition an access is invalid if the number of SPI clock pulses counted during active

CS differs from exactly 16 clock pulses (falling edges are counted).

- On a writing access the received data is only taken over into the internal registers and

- the fault register is only cleared by the RD_DIAG command,

if exactly 16 SPI clock pulses were counted while CS active.

Writing access / 8 bit + 8 bit

resp.

SPI Instruction

SS

SI

SO

MSB

Data/8 Bit

SS

DIA4 DIA3 DIA2 DIA1

MSB

MSB

Z

Z

F OT DIA6 DIA5

1

0

-

-

-

-

-

-

SPI Instruction

SI

SO

MSB

XXXX XXXX

MSB

MSB

Z

Z

OT DIA6 DIA5

F

1

0

-

-

-

-

-

-

Reading access / 8 bit + 8 bit

Data/8 Bit