E981.07 Datasheet, PDF (37/46 Pages) ELMOS Semiconductor AG – Two independent operating channels

Two Channel Sensor Interface PSI5
ADVANCE PRODUCT INFORMATION JUL 26, 2011
E981.07
5.2.6.2.3 SYNC_ENABLE
The SYNC_ENABLE command is used to enable the sync pulses for the specified channels. It can be used for
bidirectional communication between the MCU and the satellite sensors. The response indicates the current
state (①) of the line sync pulse enable bits for each channel. By default all sync pulses are enabled. The
command is latched until a subsequent SPI update, reset, or any condition which deactivates the channel, such
as thermal, or over current shutdown.
WRITE
MOSI
MISO
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 1 0 0 0 1 0 0 x x x x X X SE2 SE1
0 0 1 P 1 1 1 0 0 0 0 0 0 0 SE2 SE1
READ
MOSI
MISO
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
10000100xxxxxxxx
0 1 0 P 1 1 1 0 0 0 0 0 0 0 SE2 SE1
SEx
Sync Enable
0 Sync Pulse for Channel x disable
1 Sync Pulse for Channel x enable (default)
① At the begin of the response.
5.2.6.2.4 NOP
The NOP command is used for retrieving the response from a previous command without altering anything
within the RSU receiver. The response is a fixed write response with all data bits set to '0'. NOP is always a
write command. Attempted read access to NOP will result in a SPI Error with the RE bit is set (RE=1).
WRITE
MOSI
MISO
READ
MOSI
MISO
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
01010111xxxxxxxx
0011111000000000
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
10010111xxxxxxxx
0001111000000010
ELMOS Semiconductor AG
Data Sheet 37 / 45
QM-No.: 25DS0050E.00
This document contains information on a new product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.