M16C6K9 Datasheet, PDF (212/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6K9 Group
PS2 Interface
Fig.GK-3 shows the PS2 interface overall block diagram.
Fig.GK-4 shows the transmission/reception block diagram.
PS2 mode register (02AC16)
Internal data bus
Pin selection
Control stop
PS2Bi(i=0-2)
PS2Ai(i=0-2)
"1"
"1"
CLK output
DAT output
CLK input
DAT input
Port control section
"1"
"1"
f1
1/4
Divider
1/8
1/16
1/32
Sampling clock
selection
Sampling clock
Ch0
Transmission/
reception
section
Interrupt request 0
Ch1
Transmission/
reception
section
Interrupt request 1
Ch2
Transmission/
reception
section
Interrupt request 2
Fig.GK-3 PS2 interface block diagram
Rev.1.00 Jun 06, 2003 page 212 of 290