SH7713 Datasheet, PDF (772/904 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 22 User Debugging Interface (H-UDI)
22.2 Input/Output Pins
Table 22.1 shows the pin configuration of the H-UDI.
Table 22.1 Pin Configuration
Pin Name
TCK
TMS
TRST
TDI
TDO
ASEMD0
Input/Output
Input
Input
Input
Input
Output
Input
Description
Serial Data Input/Output Clock Pin
Data is serially supplied to the H-UDI from the data input pin
(TDI), and output from the data output pin (TDO), in
synchronization with this clock.
Mode Select Input Pin
The state of the TAP control circuit is determined by changing
this signal in synchronization with TCK. The protocol conforms
to the JTAG standard (IEEE Std.1149.1).
Reset Input Pin
Input is accepted asynchronously with respect to TCK, and
when low, the H-UDI is reset. TRST must be low for a constant
period when power is turned on regardless of using the H-UDI
function. As the same as the RESETP pin, the TRST pin should
be driven low at the power-on reset state and driven high after
the power-on reset state is released. This is different from the
JTAG standard.
See section 22.4.2, Reset Configuration, for more information.
Serial Data Input Pin
Data transfer to the H-UDI is executed by changing this signal
in synchronization with TCK.
Serial Data Output Pin
Data read from the H-UDI is executed by reading this pin in
synchronization with TCK. The data output timing depends on
the command type set in the SDIR. See section 22.4.3 TDO
Output Timing, for more information.
ASE Mode Select Pin
If a low level is input at the ASEMD0 pin while the RESETP pin
is asserted, ASE mode is entered; if a high level is input,
normal mode is entered. In ASE mode, dedicated emulator
function can be used. The input level at the ASEMD0 pin
should be held for at least one cycle after RESETP negation.
Rev.1.50 Aug. 30, 2006 Page 732 of 860
REJ09B0288-0150