r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1535

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

30.4.2
Figure 30.3 shows the internal states of the TAP controller. The controller supports the state
transitions specified in JTAG with the subset.
• The condition of transition is the TMS value at the rising edge of TCK.
• The TDI value is sampled at the rising edge of TCK and shifted at the falling edge of TCK.
• The TDO value is changed at the falling edge of TCK. The TDO is in the high impedance state
• When TRST is changed to 0, the transition to the Test-Logic-Reset state is performed
other than in the Shift-DR or Shift-IR state.
asynchronously with the TCK signal.
TAP Control
1
0
Test -Logic-Reset
Figure 30.3 Diagram of Transitions of TAP Controller State
Run-Test/Idle
0
1
1
0
Select-DR-Scan
Capture-DR
Update-DR
1
Pause-DR
Exit1-DR
Exit2-DR
Shift-DR
0
1
0
1
1
0
0
1
0
0
1
Rev.1.00 Jan. 10, 2008 Page 1505 of 1658
30. User Debugging Interface (H-UDI)
1
0
Select-IR-Scan
Capture-IR
1
Update-IR
Pause-IR
Exit1-IR
Exit2-IR
0
0
Shift-IR
1
0
1
1
0
REJ09B0261-0100
1
0
0
1