Datasheet

Section 16 I
2
C Bus Interface 2 (IIC2)
Rev. 2.00 Sep. 23, 2005 Page 288 of 444
REJ09B0068-0200
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. When read, the remaining number of transfer bits
is indicated. With the I
2
C bus format, the data is
transferred with one addition acknowledge bit. Setting
the BC2 to BC0 bits should be made during an interval
between transfer frames. If the BC2 to BC0 bits are set
to a value other than 000, the setting should be made
while the SCL pin is low. The value returns to 000 at the
end of a data transfer, including the acknowledge bit.
With the clock synchronous serial format, these bits
should not be modified.
I
2
C Bus Format Clock Synchronous Serial Format
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