Figure 25.4 Serial Data Input/Output (1) - Renesas H8S/2158 User Manual

8. If a pin with a pull-up function is sampled while its pull-up function is enabled, 1 can be
detected at the corresponding input scan register. In this case, the corresponding enable scan
register should be cleared to 0.
9. If a pin with an open-drain function is sampled while its open-drain function is enabled and its
corresponding output scan register is 1, 0 can be detected at the corresponding enable scan
register.
SDIR serial data input/output
SDIR is captured into the shift register in Capture-IR, and bits 0 to 31 of SDIR are output in that order
from the ETDO pin in Shift-IR.
Data input from the ETDI pin is written to SDIR in Update-IR.
ETDI
ETDO
Bit 31 Bit 31
.
.
.
.
.
SDIR
.
.
.
.
.
.
Bit 0 Bit 0
Capture-IR

Figure 25.4 Serial Data Input/Output (1)

Section 25 User Debug Interface (H-UDI)
ETDI
ETDO
Rev. 3.00 Jan 25, 2006 page 759 of 872
Bit 31 Bit 31
.
.
Bit 28 Bit 28
.
SDIR
Update-IR
REJ09B0286-0300