XETK-V1.0 - User’s Guide
20
ETAS
Hardware Description
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.
Fig. 4-6
System with internal and external Memory (e.g. MPC5553,
MPC5554)
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
.
Note
This chip select must not be used by another external memory (e.g. Flash or
RAM).
1.
/CS1 is not available for VertiCal base boards with MPC5553 microcontroller.
ECU PCB
VertiCal Base Board
ETK
Data Emulation
and M easurement
M emory
External Flash
(optional)
External RAM
(optional)
/CS
FLASH
/CS
RAM
/CS[3:0]
EBI
/CS
ETK
EBI
EBI
EBI
Microcontroller
M PC5554
M PC5553
/CS
ETK
can be
configured to
any of /CS[3:0] * )
External Bus
Interface (EBI)