AN2074 Freescale Semiconductor / Motorola, AN2074 Datasheet - Page 23

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

START
JTAG_IDCODE:
JTAG_EXECUTE:
read_TDO
TDO_SET
TDO_CLR
shift
no_read
TMS_SET
TMS_CLR
cont1
TDI_SET
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
dc
org
jsr
jsr
debug
move
jsr
rts
move
tst
beq
move
brclr
brclr
move
bra
move
lsr
ror
brclr
bset
bra
bclr
brclr
bset
bra
$04
$04
$04
$04
$04
$04
$04
$04
$04
$84
$04
$04
$04
$04
$04
$04
$04
$24
$30
$10
$00
p:$100
JTAG_RTI
JTAG_IDCODE
#JTAG_ID_SEQ,r0
JTAG_EXECUTE
x:(r0)+,a1
a
done
a1,x:JTAG_INSTR
#DATA_RD,x:JTAG_INSTR,no_read
#TDO_BIT,x:M_PDRD,TDO_CLR
#>1,a
shift
#>0,a
a
b
#DATA_TMS,x:JTAG_INSTR,TMS_CLR
#TMS_BIT,x:M_PDRD
>cont1
#TMS_BIT,x:M_PDRD
#DATA_TDI,x:JTAG_INSTR,TDI_CLR
#TDI_BIT,x:M_PDRD
>cont2
; go to Shift DR
; go to Shift DR - msb of data out
; go to Shift DR - lsb of data out
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR - msb of data out
; go to Shift DR - lsb of data out
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Shift DR
; go to Exit DR - msb of data out
; go to Update DR
; go to Run-Test-Idle
; EXIT
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
DSP56300 JTAG Examples
IDCODE Example
23