SH7619_09 Datasheet, PDF (655/860 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7619 Series

Section 21 User Debugging Interface (H-UDI)
Section 21 User Debugging Interface (H-UDI)
This LSI incorporates a user debugging interface (H-UDI) to provide a boundary scan function
and emulator support.
This section describes the boundary scan function of the H-UDI. For details on emulator functions
of the H-UDI, refer to the user's manual of the relevant emulator.
21.1 Features
The H-UDI 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 function, 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 21.1 shows a block diagram of the H-UDI.
TDI
TDO
SDBPR
MUX
SDIR
SDID
TCK
TMS
TRST
TAP controller
Decoder
Local
bus
[Legend]
SDBPR:
SDBSR:
SDIR:
SDID:
Bypass register
Boundary scan register
Instruction register
ID register
Figure 21.1 Block Diagram of H-UDI
Rev. 6.00 Jul. 15, 2009 Page 615 of 816
REJ09B0237-0600