Section 18
I
2
C Bus Interface (IIC)
Rev. 1.00 Mar. 12, 2008 Page 593 of 1178
REJ09B0403-0100
18.3.4 I
2
C Bus Mode Register (ICMR)
ICMR sets the communication format and transfer rate. It can only be accessed when the ICE bit
in ICCR is set to 1.
Bit Bit
Name
Initial
Value
R/W Description
7 MLS 0 R/W
MSB-First/LSB-First
Select
0: MSB-first
1: LSB-first
Set this bit to 0 when the I
2
C bus format is used.
6
WAIT
0
R/W
Wait Insertion Bit
This bit is valid only in master mode with the I
2
C bus
format.
0: Data and the acknowledge bit are transferred
consecutively with no wait inserted.
1: After the fall of the clock for the final data bit (8th
clock), the IRIC flag is set to 1 in ICCR, and a wait state
begins (with SCL at the low level). When the IRIC flag
is cleared to 0 in ICCR, the wait ends and the
acknowledge bit is transferred.
For details, refer to section 18.4.7, IRIC Setting Timing
and SCL Control.
5
4
3
CKS2
CKS1
CKS0
All 0
R/W
Transfer Clock Select
These bits are used only in master mode.
These bits select the required transfer clock rate, together
with bits IICX5 (channel 5), IICX4 (channel 4), and IICX3
(channel 3) in the IICX3 register and bits IICX2 (channel
2), IICX1 (channel 1), and IICX0 (channel 0) in the STCR
register. Refer to table 18.3.
Содержание H8S Family
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Страница 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
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Страница 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Страница 588: ...Section 15 Serial Communication Interface with FIFO SCIF Rev 1 00 Mar 12 2008 Page 540 of 1178 REJ09B0403 0100...
Страница 632: ...Section 17 Synchronous Serial Communication Unit SSU Rev 1 00 Mar 12 2008 Page 584 of 1178 REJ09B0403 0100...
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