
Technical Reference Manual
TMDXEVM6657L
SPRUHG7 - Revised August 2012
TMDXEVM6657LE
Page 24 / 90
2.4 JTAG - Emulation Overview
2.4.1 JTAG
– TMDXEVM6657L
C6657 Lite EVM has on-board embedded JTAG emulation circuitry; hence user does not require any external
emulator to connect EVM with Code Composer Studio. User can connect CCS with target DSP in EVM through
USB cable supplied along with this board. The EVM supports two different types of DSP Emulation -
“USB mini-
B” and “60-pin TI JTAG-DSP”. USB emulation is supported through an on-board, optimized XDS100-class
embedded emulation circuit.
In case user wishes to connect external emulator to EVM, the TI 60-pin JTAG header (EMU1) is provided on-
board for high speed real-time emulation. The TI 60-pin JTAG supports all standard (XDS510 or XDS560) TI
DSP emulators. Please refer to the documentation supplied with your emulator for connection assistance.
On-board embedded JTAG emulator is the default connection to DSP, however when external emulator is
connected to EVM, board circuitry switches automatically to give DSP‟s emulation access to external emulator.
When on-board emulator and external emulator both are connected at the same time, external emulator has
priority and on-board emulator is disconnected from DSP.
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.
The JTAG interface among the DSP, on-board emulator, external emulator and the AMC edge connector is
shown in the below figure.
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
Figure 2.2: TMDXEVM6657L
JTAG
emulation
Содержание eInfochips TMDXEVM6657L
Страница 19: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 19 90...
Страница 20: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 20 90...
Страница 21: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 21 90...
Страница 77: ...Technical Reference Manual TMDXEVM6657L SPRUHG7 Revised August 2012 TMDXEVM6657LE Page 77 90...