SH7058 Datasheet, PDF (736/1130 Pages) Renesas Technology Corp – Renesas SuperHTM RISC engine

Section 19 High-performance User Debug Interface
(H-UDI)
19.1 Overview
The High-performance user debug interface (H-UDI) provides data transfer, interrupt request, and
boundary scan functions. The H-UDI performs serial transfer by means of external signal control.
19.1.1 Features
The H-UDI has the following features conforming to the IEEE 1149.1 standard.
• Five test signals (TCK, TDI, TDO, TMS, and TRST)
• TAP controller
• Instruction register
• Data register
• Bypass register
• Boundary scan register
The H-UDI has seven instructions.
• BYPASS mode
Test mode conforming to IEEE 1149.1
• EXTEST mode
Test mode conforming to IEEE1149.1.
• SAMPLE/PRELOAD mode
Test mode conforming to IEEE1149.1.
• CLAMP mode
Test mode conforming to IEEE1149.1.
• HIGHZ mode
Test mode conforming to IEEE1149.1.
• IDCODE mode
Test mode conforming to IEEE1149.1.
• H-UDI interrupt
H-UDI interrupt request to INTC
Rev. 3.0, 09/04, page 695 of 1086