HD64F2168 Datasheet, PDF (743/874 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

21.3.2 Bypass Register (SDBPR)
SDBPR is a 1-bit shift register. In BYPASS, CLAMP, or HIGHZ mode, SDBPR is connected
between the ETDI and ETDO pins.
21.3.3 Boundary Scan Register (SDBSR)
SDBSR is a shift register provided on the PAD for controlling the I/O terminals of this LSI.
Using EXTEST mode or SAMPLE/PRELOAD mode, a boundary scan test conforming to the
IEEE1149.1 standard can be performed.
Table 21.3 shows the relationship between the terminals of this LSI and the boundary scan
register.
Rev. 3.00, 03/04, page 703 of 830