Section 42 User Debugging Interface (H-UDI)
Rev. 1.00 Oct. 01, 2007 Page 1800 of 1956
REJ09B0256-0100
3. This pin should be connected to ground, the
PRESET
, or another pin which operates in
the same manner as the
PRESET
pin. However, when connected to a ground pin, the
following problem occurs. Since the
TRST
pin is pulled up within this LSI, a weak
current flows when the pin is externally connected to ground pin. The value of the
current is determined by a resistance of the pull-up MOS for the port pin. Although this
current does not affect the operation of this LSI, it consumes unnecessary power.
The TCK clock or the CPG of this LSI should be set to ensure that the frequency of the TCK clock
is less than the peripheral-clock frequency of this LSI.
42.3
Boundary Scan TAP Controllers (IDCODE, EXTEST,
SAMPLE/PRELOAD, and BYPASS)
The H-UDI contains two separate TAP controllers: one for controlling the boundary-scan function
and another for controlling the H-UDI reset and interrupt functions. Assertion of
TRST
, for
example at power-on reset, activates the boundary-scan TAP controller and enables the boundary-
scan function prescribed in the JTAG standards. Executing a switchover command to the H-UDI
allows usage of the H-UDI reset and H-UDI interrupts. This LSI, however, has the following
limitations:
•
Clock-related pins (EXTAL, XTAL, EXTAL2, and XTAL2) are out of the scope of the
boundary-scan test.
•
Reset-related pins (
PRESET
,
MRESET
) are out of the scope of the boundary-scan test.
•
H-UDI-related pins (TCK, TDI, TDO, TMS, TRST and MPMD) are out of the scope of the
boundary-scan test.
•
DDRIF-related pins are out of the scope of the boundary-scan test
•
XRTCTBI
, USBP, USBM, DA0, DA1, and AN0 to AN3 pins are out of the scope of the
boundary-scan test
•
During the boundary scan (IDCODE, EXTEST, SAMPLE/PRELOAD, BYPASS, and H-UDI
switchover command), the maximum TCK signal frequency is 2 MHz.
•
The external controller has 8-bit access to the boundary-scan TAP controller via the H-UDI.
Note: During the boundary scan, the
PRESET
pin should be fixed high-level.
Table 42.2 shows the commands supported by the boundary-scan TAP controller.
Содержание SH7763
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Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
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Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
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Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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