SH7763 Datasheet, PDF (1867/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 42 User Debugging Interface (H-UDI)
Table 42.2 Commands Supported by Boundary-Scan TAP Controller
Bit 7 Bit 6 Bit 5
0
1
0
1
1
1
0
0
0
0
1
0
0
0
0
Other than above
Bit 4
1
1
0
0
0
Bit 3
0
1
0
0
1
Bit 2
1
1
0
0
0
Bit 1
0
1
0
0
0
Bit 0
1
1
0
0
0
Description
IDCODE
BYPASS
EXTEST
SAMPLE/PRELOAD
H-UDI (switchover command)
Setting prohibited
TRST is
asserted
H-UDI select command is input to
boundary-scan TAP controller
TCK
TMS
TRST
TDI
H-UDI select command (B'00001000)
(when Shift-IR state > 8 cycles,
input of last 8 cycles is valid)
00010000
Status
Shift-IR
H-UDI
selection
H-UDI is used
Run-Test-Idle
Switchover is determined at falling of
first tck cycle after the boundary-scan TAP
controller has entered the Run-Test/Idle state
TRST is
asserted
Status
Run-Test-Idle
Shift-IR ---
Figure 42.2 Sequence for switching from Boundary-Scan TAP Controller to H-UDI
Rev. 1.00 Oct. 01, 2007 Page 1801 of 1956
REJ09B0256-0100