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33793_10

Description
Distributed System Interface
File Size390KB,27 Pages
ManufacturerFREESCALE (NXP)
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33793_10 Overview

Distributed System Interface

Freescale Semiconductor
Technical Data
Document Number: MC33793
Rev 14.0, 5/2010
Distributed System Interface
(DSI) Sensor Interface
The 33793 is a slave Distributed System Interface (DSI) device
that is optimized as a sensor interface. The device contains circuits
to power sensors such as accelerometers and to digitize the analog
level from the sensor. The device is controlled by commands over the
DSI bus and returns measured data over the bus.
Features
Conforms to DSI specification version 1
4-channel, 8-Bit analog-to-digital converter (ADC)
4 pins configurable as analog or logic inputs or as logic outputs
Provides regulated +5.0 V output for sensor power from bus
Additional high-drive logic output
Under-voltage fault detection and signaling
On-board clock (no external elements required)
Field-programmable address
Default and field-programmable as a DSI daisy chain device
Recognizes reverse initialization for open bus fault tolerance
Detects short to battery on bus switch and prevents its closure
Pb-free packaging designated by suffix code EF
33793/A
DISTRIBUTED SYSTEM INTERFACE
SCALE 2:1
EF SUFFIX (Pb-FREE)
98ASB42566B
16-PIN SOICN
ORDERING INFORMATION
Device
MCZ33793EF/R2
MCZ33793AEF/R2
-40°C to 150°C
16 SOICN
Temperature
Range (T
J
)
Package
33790
GND
DSIO
X-Y
Accelerometer
Error
Test
X
Y
GND
VCC
33793
BUSIN
BUSRTN
I/O0
I/O1
I/O2
I/O3
BUSOUT
H_Cap
REGOUT
LOGOUT
AGND
Multiple
DSI Slaves
33793
BusIN
Figure 1. 33793 Simplified Application Diagram
Freescale Semiconductor, Inc. reserves the right to change the detail specifications, as
may be required, to permit improvements in the design of its products.
© Freescale Semiconductor, Inc., 2006-2010. All rights reserved.

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