Renesas H8S/2100 Series Hardware Manual page 592

Section 19 Keyboard Buffer Control Unit (PS2)
KCLK
(pin state)
KD
(pin state)
KCLK
(input)
KCLK
(output)
KB7 to KB0 Previous data
PER
KBS
KBF
[1] [2] [3]
Rev. 1.00 May 09, 2008 Page 566 of 954
REJ09B0462-0100
1 2 3
Start
0 1
bit
KB0 KB1
Figure 19.4 Receive Timing
Receive processing/
error handling
9 10 11
7
Parity bit Stop bit
Automatic I/O inhibit
Receive data
[4] [5]
Flag cleared
[6]