SH7710 Datasheet, PDF (835/996 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 23 User Debugging Interface (H-UDI)
Section 23 User Debugging Interface (H-UDI)
This LSI incorporates a user debugging interface (H-UDI) and advanced user debugger (AUD) for
a boundary scan function and emulator support.
This section describes the H-UDI. The AUD is a function exclusively for use by an emulator.
Refer to the User’s Manual for the relevant emulator for details of the AUD.
23.1 Features
The H-UDI (User debugging interface) is a serial I/O interface which conforms to JTAG (Joint
Test Action Group, IEEE Standard 1149.1 and IEEE Standard Test Access Port and Boundary-
Scan Architecture) specifications.
The H-UDI in this LSI supports a boundary scan mode, and is also used for emulator connection.
When using an emulator, H-UDI functions should not be used. Refer to the emulator manual for
the method of connecting the emulator.
Figure 23.1 shows a block diagram of the H-UDI.
TDI
TDO
SDBPR
MUX
SDIR
SDID
TCK
TMS
TRST
TAP controller
Decoder
Local
bus
Figure 23.1 Block Diagram of H-UDI
Rev. 2.00 Dec. 07, 2005 Page 793 of 950
REJ09B0079-0200