Datasheet

Section 16 I
2
C Bus Interface 2 (IIC2) (Option)
Rev.7.00 Mar. 18, 2009 page 786 of 1136
REJ09B0109-0700
16.4 Operation
16.4.1 I
2
C Bus Format
Figure 16.3 shows the I
2
C bus formats. Figure 16.4 shows the I
2
C bus timing. The first frame
following a start condition always consists of 8 bits.
S SLA R/W A DATA A 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/W A DATA
111
n17
1 m1
S SLA R/W A DATA A/A P
111
n27
1 m2
111
A/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 16.3 I
2
C Bus Formats
SDA
SCL
S
1-7
SLA
8
R/W
9
A
1-7
DATA
89 1-7 89
A DATA PA
Figure 16.4 I
2
C Bus Timing