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Technical Reference Manual
TMDXEVM6657L
SPRUHG7 - Revised August 2012
TMDXEVM6657LE
Page 25 / 90
2.4.2 JTAG
– TMDXEVM6657LE
In TMDXEVM6657LE, high speed real time emulation can be performed without needing an external emulator as
it has an integrated, system trace capable XDS560v2 Mezzanine Emulator mounted on its TI 60-pin JTAG
header (EMU1). User can connect the EVM to CCS by connecting the USB port of XDS560 Mezzanine Emulator
to PC using USB cable supplied with an EVM.
The default priority of high speed XDS560v2 Emulator (when mounted on TI 60-pin header) can be over-ridden,
to access the low speed XDS100 emulation, by installing jumper J5.
DSP can also be accessed through the JTAG port on the AMC edge connector. Users who want to connect the
DSP through AMC backplane even when XDS100 on-board emulator or 60-pin header with the external emulator
is connected can do so by installing jumpers on J4 and J5. For details please refer to table 2.3.
It is important to note that for XDS560v2 emulation, the USB cable needs to be connected to the mini-AB
connector (J1) on XDS560v2 Mezzanine Emulator and not to mini-B connector (J11) on the main board. For
TMDXEVM6657LE, the mini-B connector (J11) on the main board can be used to access UART-over-USB.
Please refer to
of this document for more details.
The interface between DSP and XDS560v2 Mezzanine Emulator is shown in figure below:
DSP
(C6657)
SWITCH
(TS3L301)
DSP_JTAG
(1.8V)
TI-60
Header
EMU_JTAG
LVL TXL
(TXS0108)
AMC
Finger
USB-JTAG
(FT2232H)
Mini-
USB
AMC_JTAG
FT_JTAG
EMU_DETz
LVL TXL
(SN74AVC4T245)
RS-232
(MAX3221)
80 Pin
Header
UART1
UART0
UART0
(1.8V)
(1.8V)
UART1
MMC
(MSP430)
DSP_UART
(3.3V)
RS232
JTAG
1V8_JTAG
(1.8V)
SEL
(1.8V)
(3.3V)
(3.3V)
USB
OR
3V3_JTAG
(3.3V)
SWITCH
(TS3L301)
SEL
FT2232_RST#
AND
COM1
USB1
VCC
GND
USB
UART
J5
J4
COM_SEL1
EMU1
XDS560v2
Mezzanine
Card
USB
Mini AB
For XDS560v2
Emulation
TI-60
Figure 2.3: TMDXEVM6657LE
JTAG Emulation
Table 2.4: Emulator Selection using J4 and J5
J4
J5
Emulator Accessible
XDS560v2 Mezzanine
XDS100
AMC
Open
Open
Yes
Yes
Yes
Open
Short
No
Yes
Yes
Short
Open
Yes
No
Yes
Short
Short
No
No
Yes
Note:
The left most emulator has the highest priority. If it is accessible & connected, the lower priority emulators cannot be connected.
Summary of Contents for eInfochips TMDXEVM6657L
Page 19: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 19 90...
Page 20: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 20 90...
Page 21: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 21 90...
Page 77: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 77 90...