Section 19
Keyboard Buffer Control Unit (PS2)
Rev. 1.00 Apr. 28, 2008 Page 589 of 994
REJ09B0452-0100
Figure 19.2 shows how the PS2 is connected.
Vcc
KCLK in
KCLK out
KD in
KD out
Keyboard buffer control unit
(This LSI)
System side
KCLK in
KCLK out
KD in
KD out
I/F
Keyboard side
Vcc
Clock
Data
Figure 19.2 PS2 Connection
19.2 Input/Output
Pins
Table 19.1 lists the input/output pins used by the keyboard buffer control unit.
Table 19.1 Pin Configuration
Channel Name
Abbreviation
*
I/O
Function
PS2 clock I/O pin (KCLK0)
PS2AC
I/O
PS2 clock input/output
0
PS2 data I/O pin (KD0)
PS2AD
I/O
PS2 data input/output
PS2 clock I/O pin (KCLK1)
PS2BC
I/O
PS2 clock input/output
1
PS2 data I/O pin (KD1)
PS2BD
I/O
PS2 data input/output
PS2 clock I/O pin (KCLK2)
PS2CC
I/O
PS2 clock input/output
2
PS2 data I/O pin (KD2)
PS2CD
I/O
PS2 data input/output
PS2 clock I/O pin (KCLK3)
PS2DC
I/O
PS2 clock input/output
3
PS2 data I/O pin (KD3)
PS2DD
I/O
PS2 data input/output
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.
Summary of Contents for H8S/2100 Series
Page 2: ...Rev 1 00 Apr 28 2008 Page ii of xxvi...
Page 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Page 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Page 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Page 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Page 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Page 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Page 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Page 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Page 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Page 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Page 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
Page 1020: ...Rev 1 00 Apr 28 2008 Page 994 of 994 REJ09B0452 0100...
Page 1023: ......
Page 1024: ...H8S 2117R Group Hardware Manual...