Renesas H8S Family Hardware Manual page 544

Section 13 Serial Communication Interface (SCI)
SCK/Port
Data
Bit 6
TE
C/A
CKE1
CKE0
Figure 13.39 Prevention of Low Pulse Output at Switching from SCK Pins to Port Pins
Rev. 1.00 Mar. 12, 2008 Page 496 of 1178
REJ09B0403-0100
1. Transmission end
Bit 7
2. TE = 0
3. CKE1 = 1
High output
4. C/A = 0
5. CKE1 = 0