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Section 19 LPC Interface (LPC)
19.3.3
Host Interface Control Register 4 (HICR4)
HICR4 controls the operation of the KCS, SMIC, and BT interface functions on channel 3.
Bit
Bit Name
7
LADR12SEL 0
6 to 4
3
SWENBL
2
KCSENBL
Rev. 1.00 Mar. 12, 2008 Page 682 of 1178
REJ09B0403-0100
R/W
Initial
Value
Slave Host Description
R/W
All 0
R/W
0
R/W
0
R/W
Switches the channel accessed via LADR12H and
LADR12L.
0: LADR1 is selected
1: LADR2 is selected
Reserved
The initial value should not be changed.
In BT mode, H'5 (short wait) or H'6 (long wait) is
returned to the host in the synchronized return
cycle from slave, thus can make the host wait.
0: Short wait is issued
1: Long wait is issued
Enables or disables the use of the KCS interface
included in channel 3. When the LPC3E bit in
HICR0 is 0, this bit is valid.
0: KCS interface operation is disabled
No address (LADR3) matches for IDR3, ODR3,
or STR3 in KCS mode
1: KCS interface operation is enabled
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