Renesas HD6417641 用户手册
Section 15 User Debugging Interface (H-UDI)
Rev. 4.00 Sep. 14, 2005 Page 455 of 982
REJ09B0023-0400
Section 15 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.
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.
Refer to the User's Manual for the relevant emulator for details of the AUD.
15.1 Features
The user debugging interface (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.
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.
the method of connecting the emulator.
Figure 15.1 shows a block diagram of the H-UDI.
SDIR
SDID
TCK
TDO
TDI
TMS
SDBPR
MUX
SDBSR
Shift register
TAP controller
Decoder
Local
bus
TRST
Figure 15.1 Block Diagram of H-UDI