AN2074 Freescale Semiconductor / Motorola, AN2074 Datasheet - Page 25

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

START
JTAG_HIGHZ:
3.6 SAMPLE/PRELOAD Example
The example discussed in this section shows how the
Select-IR scan path is selected to shift in the
Next, the Select-DR scan path is selected to shift in the 144-bit data on TDI. The
preloads this 144-bit value into the boundary scan register so that the signals
are set to logic 1 and that
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JTAG_RTI
JTAG_HIGHZ
#JTAG_HIGHZ_SEQ,r0
JTAG_EXECUTE
; go to Update IR
; go to Select DR
; go to Capture DR
; go to Shift DR
; go to Shift DR - TDI=0
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=0
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Shift DR - TDI=0
; go to Shift DR - TDI=0
; go to Shift DR - TDI=0
; go to Shift DR - TDI=0
; go to Shift DR - TDI=0
; go to Shift DR - TDI=0
; go to Shift DR - TDI=1
; go to Shift DR - TDI=1
; go to Exit DR
; go to Update DR
; go to Run-Test-Idle
; EXIT
Freescale Semiconductor, Inc.
A[17–4]
For More Information On This Product,
are set to logic 0. The 144-bit sampled data is shifted out on
Go to: www.freescale.com
DSP56300 JTAG Examples
- TDI=x
SAMPLE/PRELOAD
TDO=x
TDO=0
TDO=1
TDO=1
TDO=1
TDO=0
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=1
TDO=0
TDO=0
TDO=0
TDO=0
TDO=0
TDO=0
TDO=1
TDO=1
SAMPLE/PRELOAD
instruction by sending 0001 on TDI.
instruction is executed. The
SAMPLE/PRELOAD Example
AA1
JTAG_SAMPLE
,
AA2
,
CAS
, and
TDO
subroutine
A[3–0]
. This
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