SH7280 Datasheet, PDF (1547/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 29 User Debugging Interface (H-UDI)
29.4 Operation
29.4.1 TAP Controller
Figure 29.2 shows the internal states of the TAP controller.
1 Test -logic-reset
0
1
0 Run-test/idle
1
Select-DR
0
1
Capture-DR
0
Shift-DR 0
1
1
Exit1-DR
0
Pause-DR 0
1
0
Exit2-DR
1
Update-DR
1
0
1
Select-IR
0
1
Capture-IR
0
Shift-IR
0
1
1
Exit1-IR
0
Pause-IR 0
1
0
Exit2-IR
1
Update-IR
1
0
Figure 29.2 TAP Controller State Transitions
Note:
The transition condition is the TMS value at the rising edge of TCK. The TDI value is
sampled at the rising edge of TCK; shifting occurs at the falling edge of TCK. For details
on change timing of the TDO value, see section 29.4.3, TDO Output Timing. The TDO is
at high impedance, except with shift-DR and shift-IR states. During the change to TRST =
0, there is a transition to test-logic-reset asynchronously with TCK.
Rev. 1.00 Jun. 26, 2008 Page 1517 of 1692
REJ09B0393-0100