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Section 34 User Debugging Interface
R01UH0134EJ0400 Rev. 4.00 Page 1819 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Section 34 User Debugging Interface
This LSI incorporates a user debugging interface for emulator support.
34.1 Features
The user debugging interface is a serial input/output interface that supports JTAG-standard, IEEE
Std.1149.1.
This module incorporates a TAP controller for controlling the user debugging interface interrupt
function. When the emulation enable command is input, emulation commands become available.
When the TRST pin is asserted, emulation commands are disabled.
In ASE mode, emulation commands are available. For connection with the emulator, see the
manual for the emulator.
Figure 34.1 shows a block diagram.
Bypass register
Instruction register
Enable register
[Legend]
SDBPR:
SDIR:
SDENR:
SDIR
SDENR
TCK
TDO
TDI
TMS
TRST
SDBPR
MUX
Shift register
TAP controller Decoder
Local
path
Figure 34.1 Block Diagram