M16C6K9 Datasheet, PDF (213/292 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6K9 Group
PS2 Interface
Sampling clock
Internal data bus
PS2i shift register
(02A016,02A416,02A816)
DAT output
CLK input
DAT input
Synchronization
Reception
start
detection
circuit
Shift enable
Transmission/reception
control circuit
CLK output
Reception process
section
• Completion detection
• Parity generation
Reception completion
PE & FE
Transfer
completion
process circuit
Reception enable
Transfer abort
Transmission
enable
Transmission process
section
Completion detection
• Parity generation
• Acknowledge reception
Transmission completion
Acknowledge result
Communication status flags
Error flag refresh
PS2i control register
(02A216,02A616,02AA16)
All bits clear
Internal data bus
PS2i status register
(02A116,02A516,02A916)
Transfer completion
flag refresh
Interrupt request
Fig.GK-4 Transmission/reception section block diagram (One channel)
Rev.1.00 Jun 06, 2003 page 213 of 290