Kontron VMP3 - Manual (Page 47)

VMP3 Functional Description
ID 29230, Rev. 01 © 2005 Kontron Modular Computers GmbH Page 2 - 13
29230
.01.UG.VC.050727/091424
P R E L I M I N A R Y
2.4.5 J8 JTAG/Debug Interface
This Test and Programming interface supports JTAG/Debug operations. This interface can be
used for connecting hardware emulators and debuggers (e.g. BDM, COP, …). It is comprised
of a set of ten signals whereby some are common to both interfaces and some are dedicated
to only one.
The following figure and tables provide pinout and signal information for this connector.
Figure 2-6: J8 - JTAG/Debug Connector
Table 2-9: Pinout of J8
SIGNAL PIN PIN SIGNAL
TDO 1 2 NC
TDI 3 4 TRST
(pulled to +3.3V with 10 k Ω ) 5 6 EMU_VCC
TCK 7 8 CHKSTP_IN (pulled to +3.3V with 10 k Ω )
TMS 9 10 NC
SRST 11 12 NC
HRST 13 14 NC
CHKSTP_OUT (pulled to +3.3V with 10 k Ω ) 15 16 GND
Table 2-10: JTAG/Debug Signal Descriptions
SIGNAL DESCRIPTION
TCK Test Clock in for JTAG and emulator/debugger
TDI Test Data In for JTAG and emulator/debugger
TDO Test Data Out JTAG and emulator/debugger
TMS Test Mode Select, input for JTAG and emulator/debugger
TRST Test Reset, input for JTAG and emulator/debugger
HRST Hard Reset, emulator/debugger hard reset input
SRST Soft Reset, emulator/debugger reset input
CHKSTP_IN Checkstop input
CHKSTP_OUT Checkstop output
EMU_VCC Reference Voltage of the JTAG/DEBUG core
1
2 16
15