AN2074 Freescale Semiconductor / Motorola, AN2074 Datasheet - Page 17

• Manufacturer Part Number: AN2074
• Description: DSP56300 JTAG Examples
• Manufacturer: Freescale Semiconductor / Motorola

"136 (BC_1, *, control, 1)," &
"137 (BC_6, STD1, bidir, X, 136, 1, Z)," &
"138 (BC_1, *, control, 1)," &
"139 (BC_6, SRD1, bidir, X, 138, 1, Z)," &
-- num cell port func safe [ccell dis rslt]
"140 (BC_1, *, control, 1)," &
"141 (BC_6, SC11, bidir, X, 140, 1, Z)," &
"142 (BC_1, *, control, 1)," &
"143 (BC_6, SC12, bidir, X, 142, 1, Z)";
3
3.1 Test Setup
This section gives examples of how the DSP implements the TAP instructions. A DSP56303EVM acts as a
TAP bus master device by sending TAP instructions to the target DSP56307EVM.
The test described here uses the following setup:
The software that exercises the TAP is downloaded from the PC to the DSP56307 via the JTAG/OnCE
port. The DSP56303 acts as an external bus master by controlling the signals to the DSP56307. The logic
analyzer examines the relative timing of the signals. Figure 5 shows this connection.
Programming Examples
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•
•
•
Target DSP: DSP56307EVM
TAP bus master: DSP56303EVM
PC with Motorola DSP56300 software development tools
Logic analyzer
Target DSP
DSP56307
RESET
TRST
TMS
TDO
TCK
Freescale Semiconductor, Inc.
TDI
DE
For More Information On This Product,
Go to: www.freescale.com
DSP56300 JTAG Examples
Logic Analyzer
Figure 5. Test Setup
TAP Bus Master
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
JTAG/OnCE Port
DSP56300 Tools
DSP56303
PC with
Test Setup
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