ETK-V1.1 - User’s Guide
18
ETAS
Hardware Description
Fig. 4-5
ETK-V1.1 Architecture
Through the lower side of the base printed circuit board the microcontroller can
communicate with other external memories or peripheral components of the
development ECU.
While the microcontroller accesses the program data (not the program code) out
of the data emulation memory, the content of the data emulation memory can
simultaneously be modified by the calibration and development system through
the serial ETK-interface. This process enables adjustments of parameters, charac-
teristic lines and maps through the calibration and development system. Using
an additional measurement data memory area, the ECU microcontroller can send
data to the calibration and development system which receives, buffers and pro-
cesses this measured data.
A flash memory is available for permanent storage of the adjusted parameters
(program data).
The 100 Mbit/s serial interface provides communication with the calibration and
development system.
The power supply for the ETK-V1.1 is provided by a switch mode power supply,
to minimize power dissipation.
4.3
Microcontroller Interface
The whole microcontroller interface to the calibration and development system
memory has a 16 bit wide data bus and uses only one chip select for read and
write accesses.
The microcontroller can read and write its data directly from or to the data emu-
lation and measurement data memory. Fig. 4-6 and Fig. 4-7 show an overview of
a system with external Flash, RAM and additional data emulation and measure-
ment memory (ETK memory). The microcontroller can read and write its data
directly from or to the ETK memory. ETK memory chip select (/CS_ETK) can be
configured to any of /CS[3:0]
1
1.
/CS1 is not available for VertiCal base boards with MPC5553 microcontroller.
FLASH
1 M B
(Dat a)
RAM
4 KB
System
Functions
Tool
Interface
Trigger
Unit
Control
Unit
Automat ic
Page
Initialization
Automat ic
Pow er-On
U-Bat t
ETK
Interf ace
100
Mbit/s
Pow er
Supply
M onitoring
Power
Supply
4.3...18 V
Standby
Pow er
Supply
4.3...18 V
ECU
Reset &
Pow er
Control
Sense ECU Pow er Supply
St andby Power Supply
ECU Reset
Ethernet
Phy
Et hernet
Traf fic
Det ection
159-pin
VertiCal
Connect or
DPRAM
1 M B
(Dat a Ref erence
Page +
Measurement)
DPRAM
1 M B
(Dat a Working
Page +
Measurement )
Interf ace t o External Debugger
38-pin Nexus Mictor Connector
