ETAS XETK-S21.0B, User Manual

Page: 15 / 68

XETK-S21.0B - User’s Guide 15
ETAS Introduction
3 Introduction
This section contains information about the basic features and applications of
the XETK-S21.0 Interface Board (ETK = Emulator Test Probe), hints to system
requirements for operating the XETK-S21.0, and other details.
3.1 Applications
The XETK-S21.0 is an emulator probe for the Freescale MPC57xx and for the
STMicroelectronics EM57xx microcontroller family. It is a typical serial XETK
designed for use with the JTAG portion of the Nexus debug interface (IEEE/ISTO
5001).
Fig. 3-1 XETK-S21.0
The XETK-S21.0 supports the standard full duplex 100Base-T Ethernet interface
and can be connected directly or via ES51x/ES59x/ES600 modules to the PC. No
additional ETAS modules are required for the access to the ECU. The XETK-S21.0
can be used for rapid prototyping applications (bypass) as well as for measure-
ment and calibration applications.
3.2 Features
• Measurement interface:
– 3.3 V JTAG output levels, 5.0 V tolerant JTAG input
– Configurable JTAG interface clock speed: 20 MHz, 40 MHz, 50 MHz
Note
For supported MPC57xx microcontrollers, refer to chapter 7.1.3 on page 35.
XETK-S21.0
XETK ECU interface connectors 12 pin ERNI plus 7 pin JST
Power supply for ED devices (VDDSBRAM) min. 1.25 V
SBRAM sense
Yes, on board or external sense
Pinless triggering Yes
Timer triggering Yes
Note
The max. allowed JTAG clock depends on the core frequency of the micro-
controller. Max. clock speed is typically 1/4 of the core frequency.