Datasheet

Section 15 I
2
C Bus Interface2 (IIC2) (Option)
Rev.6.00 Mar. 18, 2009 Page 643 of 980
REJ09B0050-0600
15.4 Operation
15.4.1 I
2
C Bus Format
Figure 15.3 shows the I
2
C bus formats. Figure 15.4 shows the I
2
C bus timing. The first frame
following a start condition always consists of 8 bits.
S SLA R/ A DATA A A/ P
1111
n7
1 m
(a) I
2
C bus format
(b) I
2
C bus format (start condition retransmission)
n: transfer bit count
(n = 1 to 8)
m: transfer frame count
(m ≥ 1)
S SLA R/ A DATA
111
n17
1 m1
S SLA R/ A DATA A/ P
111
n27
1 m2
111
A/
n1 and n2: transfer bit count (n1 and n2 = 1 to 8)
m1 and m2: transfer frame count (m1 and m2 ≥ 1)
11
Figure 15.3 I
2
C Bus Formats
SDA
SCL
S
1-7
SLA
8
R/
9
A
1-7
DATA
89 1-7 89
A DATA PA
Figure 15.4 I
2
C Bus Timing