
BR_XETK-S2.0 - User’s Guide
16
ETAS
Hardware Description
4
Hardware Description
In this chapter, the function blocks and the interfaces of the ETK-T2.2G are
explained in detail.
4.1
ETK-T2.2G Versions
The ETK-T2.2G can only be ordered in current variant "G". It is prepared for
different functional and mechanical versions, which can be released as new
products (name and order no.) on request.
The PCB is prepared for following improvements
• The LFBGA292 adapter could be replaced by an LFBGA516 adapter to fit
into an LFBGA516 socket for an TC1798
• The DPR could be extended to 2 MByte per page.
4.2
Architecture
Fig. 4-1 "ETK-T2.2G Architecture" shows the block diagram of the ETK-T2.2G.
The connection to the ECU is made by an LFBGA connector.
Fig. 4-1
ETK-T2.2G Architecture
The microcontroller can read via the BGA connector from one of the two pages
of the data emulation memory and can write its data directly to the measure-
ment data memory. These two memories (data emulation memory, measure-
ment data memory) are using the same address space and are realized inside the
same DPRs. Through the BGA connector the microcontroller can communicate
with other external memories or peripheral components too. All microcontroller
signals are accessible on the BGA connector.
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
LFBGA292
Adapter
for TC1791
ETK-T2.2G
FLASH
1024 KB
(Data)
RAM
4 KB
System
Functions
Tool Interface
Trigger
Unit
Control
Unit
Automatic
Page
Initialization
Automatic
Power-On
U-Batt
ETK
Interface
100
Mbit/s
Power
Supply
Monitoring
Power
Supply
4.3...18 V
Standby
Power
Supply
4.3...18 V
ECU
Reset &
Power
Control
Sense ECU Power Supply
Standby Power Supply
ECU Reset
Ethernet
Phy
Ethernet
Traffic
Detection
LFBGA516
Socket
for TC1798
DPRAM
1024 KB
(Data Reference
Page +
Measurement)
DPRAM
1024 KB
(Data Working
Page +
Measurement)
JTAG
Debug
Interface