TLE8104E Datasheet, PDF (19/27 Pages) Infineon Technologies AG – Smart Quad Channel Powertrain Switch

TLE8104E
Smart Quad Channel Powertrain Switch
SPI Control
6
SPI Control
The SPI protocol of the TLE8104E provides two types of registers: control and diagnosis. After power-on reset, all
register bits are set to default values.
Serial Input
Default Value: 00_H
7
6
5
4
3
2
1
0
CMD
DATA
(CH4_IN CH3_IN CH2_IN CH1_IN)
w
w
w
w
w
w
w
w
Field
CMD
DATA
Bits
Type
Description
7:4
w
Command
0000 Diagnosis only
1100 Read back input and 1-bit diagnosis
1010 Echo function of SPI
0011 BOL bit set for logic OR operation of INn and data bits.
The default value for the BOL bit is logic OR.
1111 BOL bit set for logic AND operation of INn and data bits
XXXX All other command words are accepted as an OR or AND
command with valid data bits depending on the previously
programmed Boolean operation.
3:0
w
Data
If Command is 0000Data bits are ignored.
If Command is 1100Data bits are ignored.
If Command is 1010Data bits will appear as bits 3:0 at SO during
the next CS period.
If Command is 0011Each of the data bits is OR’ed with its
corresponding input signal INn.
If Command is 1111Each of the data bits is AND’ed with its
corresponding input signal INn.
All other CommandsEach of the data bits is OR’ed or AND’ed
with its corresponding input signal INn,
depending on the previously programmed
Boolean operation.
Serial Output (Standard Diagnosis)
Default Value: FF_H
7
6
5
4
CH4
(CH4₁ CH4₀)
r
r
CH3
(CH3₁ CH3₀)
r
r
E
3
2
CH2
(CH2₁ CH2₀)
r
r
Field
CHn
Bits
2n-2
:2n-1
Type
r
Description
Standard Diagnosis for Channel n
00 Short circuit to ground
01 Open load
10 Over load / over temperature
11 Normal operation
1
0
CH1
(CH1₁ CH1₀)
r
r
Data Sheet
19
V1.4, 2010-04-26