E909-05 Datasheet, PDF (44/67 Pages) ELMOS Semiconductor AG – The HALIOS® multi purpose optical sensor is based on an optical bridge which provides a contactless detec-tion of gestures (e.g. movement of a finger).

HALIOS® MULTI-PURPOSE OPTICAL SENSOR WITH HIGH LIGHT IMMUNITY
E909.05
PRELIMINARY INFORMATION AUG 02, 2011
6.10 I²C Interface
6.10.1 I²C Block Diagram
SCL
SDA
SCLIN
SCLOUT
SDAIN
SDAOUT
STOP
detection
START
detection
bit
count
Figure 6.10.1-1 Block Diagram
receive
control
send
receive fifo
4
3
2
1
8
write byte
≥
range
read byte
send fifo
4
3
2
1
8
≤
range
receive data
high water level
high water interrupt
high water range
clear receive fifo
slave address
set/clear wakeup enable
wakeup
send data
low water level
low water interrupt
low water range
clear send fifo
6.10.2 I²C Function
The I²C slave interface operates in 7 bit addressing mode with a maximum frequency of 400 kHz (fast mode).
To synchronize the ASIC to different operation voltages of the I²C bus the interface has a separate supply
voltage input at pin VDDI which is responsible for all interface pins. For more details of the addressing modes
please refer to the “I²C – BUS SPECIFICATION VERSION 2.1” from Philips.
6.10.3 I²C Bus Timing Diagram
SDA
0
t_r
SCL
1
1
1
0
0
t t _{HD:STA LOW}
t_HIGH
t_SU:DAT
t_HD:DAT
Figure 6.10.3-1 I²C Bus Timing Diagram
1
0
0
t_SU:STA
t_f
t_SP
1
t_BUF
0
t_SU:STO
This document contains information on a pre-production product. ELMOS Semiconductor AG reserves the right to change specifications and information herein without notice.
ELMOS Semiconductor AG
Data Sheet 44 / 67
QM-No.: 25DS0014E.00