TMS320F28335, TMS320F28334, TMS320F28332
TMS320F28235, TMS320F28234, TMS320F28232
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SPRS439M –JUNE 2007–REVISED AUGUST 2012
6.5 Emulator Connection Without Signal Buffering for the DSP
Figure 6-3 shows the connection between the DSP and JTAG header for a single-processor configuration.
If the distance between the JTAG header and the DSP is greater than 6 inches, the emulation signals
must be buffered. If the distance is less than 6 inches, buffering is typically not needed. Figure 6-3 shows
the simpler, no-buffering situation. For the pullup/pulldown resistor values, see the pin description section.
For details on buffering JTAG signals and multiple processor connections, see TMS320F/C24x DSP
Controllers CPU and Instruction Set Reference Guide (literature number SPRU160).
6 inches or less
VDDIO
VDDIO
13
14
2
5
EMU0
EMU1
TRST
TMS
TDI
EMU0
EMU1
TRST
TMS
PD
4
GND
1
6
GND
GND
GND
GND
3
8
TDI
7
10
12
TDO
TDO
11
9
TCK
TCK
TCK_RET
DSC
JTAG Header
Figure 6-3. Emulator Connection Without Signal Buffering for the DSP
Copyright © 2007–2012, Texas Instruments Incorporated
Electrical Specifications
123
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