Infineon TLI4970 Quick Instruction Manual

How w to P Progr
– Q Quick Instru
Scope: :
The foll lowing instr ructions des
sensors can be prog grammed.
Interfa ace:
The com mmunicatio n with the s
during t the program mming comm
Physic cal Layer
Serial I Inspection n and Con
This cha apter gives an overview
(SICI). This interfa ace is availa
this, the e OCD pin i is used.
The tran nsmission is s based on t
a bit. Th hese bits for rm a 16bit c
interfac e bit-synchr ronous (and
large bo oundaries).
Comm munication Timing
A micro ocontroller n needs to per
(starting g with MSB B).
•
Send a sing gle low/high
o 0 is sent as a sh
o 1 is sent as a lo
The init tial pulse len ngth (T1/T2
T". An e example of f a 1 bit tran
How to Program T LI4970 – Q
ram T TLI49
uction n Gui
scribe the se equence of c
sensor is per rformed by
mands a vol ltage of 20.5
figuration n Interface
w about the Serial Insp
able and fun nctional in p
transmitting g a single bi
command w word, simila
d thus robus st) and very
rform the fo ollowing ste
h PWM tran nsmission, w
hort low and d long high
ong low and d short high
2) and the o overall perio
smission ca an be seen in
Quick Instru uction Guide
70
ide
commands how the TL
the one wir re SICI inte
5V has to b e provided a
e (SICI)
ection and C Configurati
parallel with h the SPI int
it to the sens sor and imm
r to the SPI interface. T
flexible in timing (wit
eps 16 times s to send/rec
with at least 30/70 (or 7
PWM pulse e (e.g. 2us l
PWM pulse e (e.g. 6us l
od T determ mines the rea
n below:
e V1.1
LI4970 curr ent
erface. In Ad ddition,
at the CS pi in.
ion Interfac e
terface mod de. For
mediately re eceiving
This makes the
thin some q uite
ceive 16 bit ts
70/30) duty cycle:
low, 6us hig gh)
low, 2us hig gh)
ad-out time "Delta-
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