Cirrus Logic CS61584A - Manual (Page 37)

CS61584A
DS261PP5 37
DS261PP5
TCK
TMS
Controller state
TDI
IR shift-register
Parallel output of IR
Parallel Input to TDR
TDR shift-register
Parallel output of TDR
Register selected
TDO enable
TDO
Act
IDCODE New Instruction
Old data
Instruction register
Inactive Active Inactive Inactive
= Don’t care or undefined
Parallel Input to IR
T
e
s
t-
L
ogi
c-
Re
s
e
t
Run-
T
e
s
t/I
d
le
Se
le
c
t-
D
R
-Sc
a
n
Sel
e
ct-
IR-
Sc
an
C
apt
u
re-
IR
P
aus
e-
IR
Ex
it
2
-I
R
Shi
ft-
IR
Ex
it
1
-I
R
U
p
d
a
te
-I
R
Run
-Te
s
t/Idl
e
Ex
it
1
-I
R
Shif
t-
IR
Figure 25. JTAG Instruction Register update
CS61584A
DS261F1 37