Figure 20.23 Keyboard Controller Interface Read Timing; Figure 20.24 Keyboard Controller Interface Write Timing; Figure 20.25 Usb Over-Current Detect To Power Down Timing; Figure 20.26 Afeck Clock Input Timing - Hitachi HD64465 User Manual

WAIT#
A2,
KBCS#
XIOR#

Figure 20.23 Keyboard Controller Interface Read Timing

WAIT#
A2,
KBCS#
XIOW#

Figure 20.24 Keyboard Controller Interface Write Timing

USBOVR#
USBPEN#

Figure 20.25 USB Over-Current Detect to Power Down Timing

t
IORD
t
IOWD
t
OTP
t
ACKH
V
IH
1/2Vcc

Figure 20.26 AFECK Clock Input Timing

t
IORPW
t
IOWPW
t
ACKcyc
t
ACKL
V
IH
V V
IL
t
ACKf
t
RCSD
t
WCSD
1/2Vcc
IL
t
ACKr
Rev. 3.0, 03/01, page 363 of 390