mc33789 Freescale Semiconductor, Inc, mc33789 Datasheet - Page 53

• Manufacturer Part Number: mc33789
• Description: Airbag System Basis Chip Sbc With Power Supply And Psi5 Sensor Interface
• Manufacturer: Freescale Semiconductor, Inc

Table 16. SPI Command, - SYNC_ENABLE
LIN Interface Control SPI Commands
LIN_CONFIG (0x50, 0x90)
physical interface configuration. It supports two functions:
along with the LIN speed selection for the best EMC
performance.
Table 17. SPI Command, - LIN_CONFIG
Analog Integrated Circuit Device Data
Freescale Semiconductor
Write
Read
Write
Read
The LIN_CONFIG command is used to control the LIN
1) LIN signal wave-shaping:
There are three different slew rates that can be selected
•>20 kBaud: Wave-shaping disabled. For test and
•20 kBaud: For LIN compliant 20 kBaud communications
production configuration use only
Default →
SO
SO
SI
SI
SO
SO
SI
SI
Default →
Default →
15
0
0
1
0
15
0
x
1
x
xSE
RXO1
LSR1
14
1
0
0
1
0
1
14
1
0
0
1
0
0
1
1
0
0
1
1
Sync Pulse Enable
Channel PSI5_x sync pulse disabled
Channel PSI5_x sync pulse enabled
RXO0
LSR0
13
0
1
0
0
13
0
1
0
0
0
1
0
1
0
1
0
1
20 kBaud communications
10.4 kBaud communications
> 20 kBaud communications (no pulse shaping)
> 20 kBaud communications (no pulse shaping)
Satellite Channel 1
Satellite Channel 2
Satellite Channel 3
Satellite Channel 4
12
P
P
0
0
12
1
P
1
P
RX Output Select (for REN = 1)
11
0
1
0
1
11
0
1
0
1
LIN Slew Rate Select
SYNC_ENABLE (0x44, 0x84)
LIN_CONFIG (0x50, 0x90)
10
10
1
1
1
1
0
1
0
1
9
0
1
0
1
9
0
1
0
1
Function
Function
can be used for ISO-9141communication.
PSI5 current/voltage converters to output the voltage
modulated Manchester signal through the RXD pin. The logic
level changes of the output voltage represent the detection
threshold triggering status of the selected PSI5_x channel
current drawn. This feature provides a convenient access for
using test and development tools to acquire satellite sensor
data.
SPI update or internal reset. The response indicates the
current state of the LIN_CONFIG bits.
8
0
0
0
0
8
0
0
0
0
•10.4 kBaud: For 10.4 kBaud LIN communications. It also
2) Output Manchester Code at the RXD Pin:
This Manchester code output feature allows one of four
The LIN_CONFIG command is latched until a subsequent
7
0
0
7
x
x
x
x
x
x
SENSOR MESSAGE, OPERATION COMMAND AND SPI
6
x
x
x
x
6
x
0
x
0
REN
REN
REN
5
x
5
x
0
x
0
RXO1
RXO1
RXO1
FUNCTIONAL DEVICE OPERATION
4
x
4
0
0
x
x
RXO0
RXO0
RXO0
4SE
4SE
4SE
3
x
3
x
3SE
3SE
3SE
2
x
x
x
x
2
x
LSR1
LSR1
LSR1
2SE
2SE
2SE
1
x
1
x
LSR0
LSR0
LSR0
33789
1SE
1SE
1SE
0
x
0
x
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