Renesas SH7781 - Manual (Page 1534)

30. User Debugging Interface (H-UDI)
Rev.1.00 Jan. 10, 2008 Page 1504 of 1658
REJ09B0261-0100
0 0 0 1 0 0 0 0
T
est-Lo
g
ic
-Reset
Run-T
est
-Idle
Run-Test-Idle
T
est-Lo
g
ic
-Reset
Shift-IR
T
est-Lo
g
ic
-Reset
Run-T
est
-Idle
T
est-Lo
g
ic
-Reset Run-T
est
-Idle
Shift-IR
TCK
TMS
TRST
TDI
H-UDI
Run-Test-Idle
TRST is
asserted H-UDI switching command is input to
boundary-scan TAP controller
H-UDI is used
TRST is
asserted
Boundary-scan TAP controller
External pins
H-UDI
selection
Status
Note: The hatched sections represent the functions connected to the external pins.
Status
H-UDI switching command (B'00001000)
(when Shift-IR state > 8 cycles,
input of last 8 cycles is valid)
Switchover is determined at falling of
first tck cycle after the boundary-scan TAP
controller has entered the Run-Test/Idle state
Select-DR Select-IR
Capture-IR
Exit1-IR
Update-IR
Select-DR Select-IR Capture-IR
Figure 30.2 Sequence to Switch from Boundary-Scan TAP Controller to H-UDI