Rev. 3.0, 03/01, page 247 of 390
16.2.3
H8 Control 1 Register (H8C1R)
H8C1R is an 8-bit read/write register. System can write data to IDR1 of H8 via this register and
read the data of ODR1 of H8 via this register.
16.2.4
H8 Control 2 Register (H8C2R)
H8C2R is an 8-bit read/write register. System can write command to IDR1 of H8 via this register
and read the status of STR1 of H8 via this register.
16.3
Function Description
PB5 can be programmed to be Resume#, and PB4 can be programmed to be WakeUp#, in order to
support power management function of H8 keyboard controller.
16.4
Timing Diagram
HD0-7
XIOR#
tIORD
A2/
KBCS#
tRHDH
tRCSD
tIORPW
tHDS
WAIT#
Figure 16.2 Keyboard Controller Interface Read Timing
HD0-7
XIO
W#
tIOWD
A2/
KBCS#
tWHDH
tWCSD
tIOWPW
tHDD
WAIT#
Figure 16.3 Keyboard Controller Interface Write Timing
Summary of Contents for HD64465
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