TLE8262EXT Infineon Technologies, TLE8262EXT Datasheet - Page 71

• Manufacturer Part Number: TLE8262EXT
• Manufacturer: Infineon Technologies

Specifications of TLE8262EXT

• Operating Supply Voltage (typ): 9/12/15/18/24/28V
• Operating Supply Voltage (min): 5.5V
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 36
• Lead Free Status / Rohs Status: Supplier Unconfirmed

15
15.1
The 16-bit wide Control Input Word is read via the data input SDI, which is synchronized with the clock input CLK
supplied by the microcontroller. The output word appears synchronously at the data output SDO (see
The transmission cycle begins when the chip is selected by the input CSN (Chip Select Not), LOW active. After
the CSN input returns from LOW to HIGH, the word that has been read in becomes the new control word. The
SDO output switches to tri-state status (high impedance) at this point, thereby releasing the SDO bus for other use.
The state of SDI is shifted into the input register with every falling edge on CLK. The state of SDO is shifted out of
the output register after every rising edge on CLK. The number of received input clocks is supervised by a
modulo-16 operation and the Input / Control Word is discarded in case of a mismatch. This error is flagged in the
following SPI output by a “HIGH” at the data output (SDO pin, bit FO) before the first rising edge of the clock is
received. The SPI of the SBC is not daisy chain capable.
Figure 34
15.2
When the microcontroller send a wrong SPI command to the SBC, the SBC ignores the information. Wrong SPI
command can be either a number of bits different of 16, the mode selection (MS2..0) = 000 or requesting to go to
an SBC mode which is not allowed by the state machine, for example from SBC Stop Mode to SBC SW Flash
Mode. In that case, an interrupt is generated (if not inhibited) and the bit SPI Fail is set. Since the SPI data is
corrupted, the next SPI output data will remain the former one (the information is then repeated).
Data Sheet
CSN
CLK
SDI
SDO
CSN high to low: SDO is enabled. Status information transferred to output shift register
Serial Peripheral Interface
SPI Description
SPI Data Transfer Timing
Corrupted data in the SPI data input
FO
FI
-
CSN low to high: data from shift register is transferred to output functions
-
0
0 1 2 3 4 5 6
1 2 3 4 5 6 7 8 9 10
SDO: will change state on the rising edge of CLK signal
SDI: will accept data on the falling edge of CLK signal
Actual status
Actual data
7 8 9 10
71
11 12 13 14
11 12 13 14
15
15
Serial Peripheral Interface
Rev. 1.0, 2009-03-31
FO
FI
New status
New data
0
+
0
+
TLE8262E
Figure
1
+
time
time
time
time
1
+
34).