TLE6240GP

Smart 16-Channel Low-Side Switch

Control of the Device

Data Sheet

24

Rev.3.3, 2010-02-15

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:

The following Control Byte descriptions are referring to the Overview Table 2.

6.1.5.1

Control Byte No.1 and 6

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.

Figure 16

Example for two Consecutive Chip Select Cycles

Table 3

Control Byte - Channel Group selection

MSB

Comment

X

X

X

X

L

L

L

L

Command is valid for Channels 1 to 8

X

X

X

X

HHHH

Command is valid for Channels 9 to 16

Control Byte

Table 4

Control Byte No. 1 to 6

MSB

Comment

L

LLL

X

X

X

X

Diagnosis only

Control Byte

SI

L L L L

L L L L

X X X X

X X X X

SO

H H H H

H H H H

H H H H

H H H H

CS

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

SI

L L L L

H H H H

X X X X

X X X X

SO

CS

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

DIAG_1