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Section 15 User Debugging Interface (H-UDI)
Rev. 4.00 Sep. 14, 2005 Page 472 of 982
REJ09B0023-0400
EXTEST: This instruction is provided to test external circuitry when the this LSI is mounted on a
printed circuit board. When this instruction is executed, output pins are used to output test data
(previously set by the SAMPLE/PRELOAD instruction) from the boundary scan register to the
printed circuit board, and input pins are used to latch test results into the boundary scan register
from the printed circuit board. If testing is carried out by using the EXTEST instruction N times,
the Nth test data is scanned-in when test data (N-1) is scanned out.
Data loaded into the output pin boundary scan register in the Capture-DR state is not used for
external circuit testing (it is replaced by a shift operation).
The upper four bits of the instruction code are B'0000.
IDCODE: A command can be set in SDIR by the H-UDI pins to place the H-UDI pins in the
IDCODE mode stipulated by JTAG. When the H-UDI is initialized (
TRST
is asserted or TAP is in
the Test-Logic-Reset state), the IDCODE mode is entered.
CLAMP, HIGHZ: A command can be set in SDIR by the H-UDI pins to place the H-UDI pins in
the CLAMP or HIGHZ mode stipulated by JTAG.
15.5.2 Points
for
Attention
1. Boundary scan mode does not cover clock-related signals (EXTAL, XTAL, CKIO, CKIO2).
2. Boundary scan mode does not cover reset-related signals (
RESETP
,
RESETM
).
3. Boundary scan mode does not cover H-UDI-related signals (TCK, TDI, TDO, TMS,
TRST
).
4. The USB-transceiver-related signals (DP, DM) are beyond the scope of the boundary scan.
5. When the EXTEST, CLAMP, and HIGHZ commands are set, fix the
RESETP
pin low.
6. When a boundary scan test for other than BYPASS and IDCODE is carried out, fix the
ASEMD0
pin high.
15.6 Usage
Notes
1. An H-UDI command, once set, will not be modified as long as another command is not re-
issued from the H-UDI. If the same command is given continuously, the command must be set
after a command (BYPASS, etc.) that does not affect chip operations is once set.
2.
H-UDI commands are not accepted in standby mode, since operation of the LSI is suspended.
To retain
the TAP status before and after standby mode, keep TCK high before entering standby mode.
3. The H-UDI is used for emulator connection. Therefore, H-UDI functions cannot be used when
using an emulator.
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
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