Freescale Semiconductor
Advance Information
Document Number: MC33790
Rev 10.0, 12/2006
Two-Channel Distributed
System Interface (DSI) Physical
Interface Device
The 33790 is a dual channel physical layer interface IC for the
Distributed System Interface (DSI) bus. It is designed to meet
automotive requirements. It can also be used in non automotive
applications. It supports bidirectional communication between slave
and master ICs. Some slave devices derive a regulated 5.0 V from
the bus, which can be used to power sensors, thereby eliminating the
need for additional circuitry and wiring.
Features
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Two Independent DSI Compatible Buses
Pinout Matched to MC68HC55 (SPI to DSI Logic)
Wave-Shaped Bus Output Voltage
Independent Thermal Shutdown and Current Limit
Return Signalling Current Detection
Internal Logic Input Pull ups and Pull downs
On-Board Charge Pump
2.0 kV ESD Capability
Communications Rate Up to 150 kbps
Pb-Free Packaging Designated by Suffix Code EG
Device
MC33790DW / R2
MCZ33790EG / R2
33790
DISTRIBUTED SYSTEM INTERFACE (DSI)
DW SUFFIX
EG SUFFIX (PB-FREE)
98ASB42567B
16-PIN SOICW
ORDERING INFORMATION
Temperature
Range (T
A
)
-40°C to 85°C
Package
16 SOICW
MC68HC55
DSI0F
DSI0S
Protocol
Converter
DSI0R
DSI1F
DSI1S
DSI1R
CPCAP
33790
VDD
GND
DSI0O
VSUP
DSI1O
GND
+5.0 V
+25 V
33793
MCU
DSI
SLAVE
DEVICE
BUS_IN
BUS_OUT
33793
BUS_IN
BUS_OUT
33793
Figure 1. 33790 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2006. All rights reserved.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
