Input/Output Pins; Figure 14.2 Keyboard Buffer Controller Connection; Table 14.1 Pin Configuration - Renesas H8S/2111B Hardware Manual

Figure 14.2 shows how the keyboard buffer controller is connected.
System side
KCLK in
KCLK out
KD in
KD out
Keyboard buffer controller
(This LSI)
14.2

Input/Output Pins

Table 14.1 lists the input/output pins used by the keyboard buffer controller.

Table 14.1 Pin Configuration

Channel Name
0 KBC clock I/O pin (KCLK0)
KBC data I/O pin (KD0)
1 KBC clock I/O pin (KCLK1)
KBC data I/O pin (KD1)
2 KBC clock I/O pin (KCLK2)
KBC data I/O pin (KD2)
Note: * These are the external I/O pin names. In the text, clock I/O pins are referred to as KCLK
and data I/O pins as KD, omitting the channel designations.
Rev. 1.00, 05/04, page 350 of 544

Figure 14.2 Keyboard Buffer Controller Connection

Vcc Vcc
Clock
Data
Abbreviation* I/O
PS2AC I/O
PS2AD I/O
PS2BC I/O
PS2BD I/O
PS2CC I/O
PS2CD I/O
Keyboard side
KCLK in
KCLK out
KD in
KD out
I/F
Function
KBC clock input/output
KBC data input/output
KBC clock input/output
KBC data input/output
KBC clock input/output
KBC data input/output