TLE7230R Datasheet, PDF (10/16 Pages) Infineon Technologies AG – Smart Octal Low-Side Switch

Target Datasheet TLE7230 R/G
The input data consist of 16 bit, made up of x control bits and y data bits. The control word is used to
program the device, to operate it in a certain mode as well as providing diagnostic information (see SPI
Commands).
SO - Serial Output. Diagnostic data bits are shifted out serially at this pin, the most significant bit (MSB)
first. SO is in a high impedance state until the CS pin goes to a logic low state. New diagnostic data will
appear at the SO pin following the rising edge.
SPI Control and Commands:
MSB 14 13 12 11 10 9 8
SI:
CMD
xxx
ADDR
SO standard diagnosis
SO:
Ch 8
Ch 7
Ch 6
Ch 5
SO after read command in previous frame
SO: 0 1 0 0 0
ADDR
76
Ch 4
5432
DATA
Ch 3
Ch 2
DATA
1 LSB
Ch 1
CMD Command :
0 0 : Diagnosis Only :
Reads out the diagnosis register. This command has no other influence on the device.
0 1 : Read register :
With the next SO dataframe the content of the addressed register will be sent.
1 0 : Reset Registers
Sets back all internal registers. Logic registers to default and Fault registers to no error.
1 1 : Write register :
The data of the SI word will be written to the addressed register.
No valid Commands :
If the first 8 bit of the SI word contain no valid bit combination it will not lead to an reac-
tion (register value change, switching channels, ...) of the IC. After Chip Select giong
LÆH the diagnosis register will not be reset.
ADDR Address :
Pointer to register for read and write command
DATA Data:
Data written to or read from register selected by address ADDR
Ch x
Standard diagnosis for channel x:
Details see "SPI Diagnostics"
V1.1
Page 10
12. Oct. 2003