33784 Datasheet, PDF (2/30 Pages) Freescale Semiconductor, Inc – DSI 2.02 Sensor Interface

INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
BUSIN
I/O0
I/O1
I/O2
TEST1
TEST2
RTNIN
Rectifier
High Side Bus Switch
0-35 V
Receiver
Bandgap
Reference
Data
Frame
Received
Message
from MCU
Response
Current
0 – 11mA
8.0mA/μs
Bus Return
Oscillator
10MHz
DataOut <2.0>
I/O Buffers
DataOut <0>
Logic
Command Decode
State Machine
Response Generation
DataOut <1>
DataOut <2>
SEL
MUX
10-Bit
ADC
H_CAP
2.2μF or
4.7μF
Typical
BUSOUT
TOUT
Power
Management
5.0V Regulator
BG Reference
Bias Currents
POR
REGOUT
C_RO = 2.2μF
AGND
IDDQ
Low Side Bus Switch
AN0
AN1
RTNOUT
Figure 2. 33784 Simplified Internal Block Diagram
33784
2
Analog Integrated Circuit Device Data
Freescale Semiconductor