Renesas H8S/2100 Series, Hardware Manual

Page: 567 / 1024

Section 18 I
2
C Bus Interface (IIC)
Rev. 1.00 Apr. 28, 2008 Page 541 of 994
REJ09B0452-0100
Bit Bit Name
Initial
Value R/W Description
2
1
0
BC2
BC1
BC0
0
0
0
R/W
R/W
R/W
Bit Counter 2 to 0
These bits specify the number of bits to be transferred
next. Bit BC2 to BC0 settings should be made during
an interval between transfer frames. If bits BC2 to BC0
are set to a value other than 000, the setting should be
made while the SCL line is low.
The bit counter is initialized to B'000 when a start
condition is detected. The value returns to B'000 at the
end of a data transfer.
I
2
C Bus Format Clocked Synchronous Serial Mode
000: 9 bits 000: 8 bits
001: 2 bits 001: 1 bits
010: 3 bits 010: 2 bits
011: 4 bits 011: 3 bits
100: 5 bits 100: 4 bits
101: 6 bits 101: 5 bits
110: 7 bits 110: 6 bits
111: 8 bits 111: 7 bits