MB3U, MB3U-I2C
BiSS TO PC-USB ADAPTER
Rev B2, Page 2/7
BiSS
Plug Pin Configuration
Pin
1
2
3
4
5
6
7
8
9
Name
VB
MA +
MA -
VDD
MO -
GND
SL +
SL -
MO +
Function
+12 V Sensor supply (90 mA
max
)*
Optional: powered by ext. supply
Clock output P
Clock output N
+5 V Sensor supply (50 mA
max
)*
+5 V High-level signal
Optional: master data output N
Ground (0 V)
Data input P
Data input N
0 V Low-level signal
Optional: master data output P
USB-B Plug
4-pole
I2C Plug
10-pole
2
1
Power Supply Socket
2-pole, 6.6/1.9 mm
DIN 45323
size approx.
42 x 95 x 24 mm
Power Supply Socket
Inner contact
Negative pole
Outer contact
Pos. pole (9 to 15 V DC, 1 A
max
)
BiSS Plug
9-pole SUB-D
Figure 2: iC-MB3 iCSY MB3U-I2C
PC-USB Adapter With I2C Extension
I2C Plug Pin Configuration For I2C-Link
PIN
1
2
3
4
5
6
7
8
9
10
Name
SCL
GND
-
+5 V
-
-
SDA
-
SDA
GND
Function
Serial Clock Line
Ground
Reserved
Supply Voltage
Reserved
Reserved
Serial Data Line
Reserved
Serial Data Line
Ground
The
BiSS
and I2C to PC-USB Adapter has an addi-
tional plug for I2C or SPI communication. The USB
port supplies the sensors via the I2C plug with 5 V (up
to 250 mA, through Pin 4 - no galvanic isolation). If
there is load applied to the
BiSS
connector, the max-
imum current supplied via the I2C plug is decreased.
For more power, an additional external power supply is
recommended (the wall power supply does not supply
the I2C plug, see Figure 3). I2C multi-master capability
is not provided.
Note:
To use I2C, pin 7 and pin 9 must be short.
Technical Data I2C / SPI Interface
• Serial computer bus communication I2C
• Serial computer bus communication SPI
• Sensor supply sourced from the USB port
(+5 V up to 250 mA) without isolation
• I2C data rates of up to 320 kHz
• USB 2.0 compatible
I2C Plug Pin Configuration For SPI-Link
PIN
1
2
3
4
5
6
7
8
9
10
Name
SCLK
GND
-
+5 V
-
-
MOSI
NCS
MISO
GND
Function
Serial Clock
Ground
Reserved
Supply Voltage
Reserved
Reserved
Master Out Slave IN
Not Chip Select
Master In Slave Out
Ground
* 100 mA for +5 V and +12 V available starting from 2008
ICHAUS [ IC-HAUS GMBH ]
