Section 19 LPC Interface (LPC)
Rev. 1.00 Mar. 12, 2008 Page 714 of 1178
REJ09B0403-0100
R/W
Bit
Bit Name Initial Value Slave Host Description
1
0
R/W
R
Reserved
The initial value should not be changed.
0 BUSY 0
R/(W)
*
W SMIC
Busy
This bit indicates that the slave is now transferring
data. This bit can be cleared only by the slave and
set only by the host.
The rising edge of this bit is a source of internal
interrupt to the slave.
0: Transfer cycle wait state
[Clearing conditions]
After the slave reads BUSY = 1, writes 0 to this bit.
1: Transfer cycle in progress
[Setting condition]
When the host writes 1 to this bit.
Note: Only 0 can be written to clear the flag.
19.3.21 SMIC Control Status Register (SMICCSR)
SMICCSR is one of the registers used to implement SMIC mode. This is an 8-bit
readable/writable register that stores a control code issued from the host and a status code that is
returned from the slave.
The control code is written to this register accompanied by the transfer between the host and slave.
The status code is returned to this register to indicate that the slave has recognized the control
code, and a specified transfer cycle has been completed.
19.3.22 SMIC Data Register (SMICDTR)
SMICDTR is one of the registers used to implement SMIC mode. This is an 8-bit register that is
accessible (readable/writable) from both the slave processor (this LSI) and host processor. This is
used for data transfer between the host and slave.
Содержание H8S Family
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