HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 571

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

21.4
21.4.1
Figure 21.2 shows the internal states of TAP controller. State transitions basically conform with
the JTAG standard.
Note: The transition condition is the TMS value on the rising edge of TCK. The TDI value is
sampled on the rising edge of TCK; shifting occurs on the falling edge of TCK. The TDO
value changes on the TCK falling edge. The TDO is at high impedance, except with shift-
DR (shift-SR) and shift-IR states. When TRST = 0, there is a transition to test-logic-reset
asynchronously with TCK.
H-UDI Operations
TAP Controller
1
0
Test-logic-reset
Run-test/idle
0
Figure 21.2 TAP Controller State Transitions
1
1
0
Select-DR-scan
Capture-DR
Update-DR
Pause-DR
1
Exit1-DR
Exit2-DR
Shift-DR
0
0
1
0
1
1
0
0
1
0
1
Rev. 4.00, 03/04, page 525 of 660
1
0
Select-IR-scan
Capture-IR
Update-IR
1
Pause-IR
Exit1-IR
Exit2-IR
Shift-IR
0
0
1
0
1
1
0
1
0
0
1