Operation During Data Reception; Figure 17.13 Receive Timing And Kclk - Renesas H8S Series Hardware Manual

Section 17 Keyboard Buffer Control Unit (KBU)
17.4.8

Operation during Data Reception

If the KBS bit in KBCRH is set to 1 with other keyboard buffer control units in reception*, the
KCLK is automatically pulled down. Figure 17.13 shows receive timing and the KCLK.
Note: * Period from the first falling edge of KCLK to completion of reception (KBF = 1).
1
KCLK
KD
Start bit
KBF
KCLK for
other PS/2
Rev. 3.00 Jul. 14, 2005 Page 604 of 986
REJ09B0098-0300
2 8
0 1

Figure 17.13 Receive Timing and KCLK

9 10
7 Parity
11
Automatic I/O inhibit
Stop bit