IDT CPS-12, User Manual

Page: 40 / 129

IDT I2C Interface
Revision 1.5
Integrated Device Technology, Inc.
CPS-16/12/8 User Manual 4 - 12 July 10, 2012
Figure 4.12 Write Protocol with 10-bit Slave Address (ADS is 1)
Figure 4.13 Read Protocol with 10-bit Slave Address (ADS is 1)
Figure 4.14 Write Protocol with 7-bit Slave Address (ADS is 0)
54 63 72
27 36
82
45
A 0
AC
K
R/
W
0
S
ST
A
R
T
9
R=1 | W=0
Device
Address [9:8]
SLAVE ADDR A
AC
K
1 1 1 1 0 S A
Device
Address [7:0]
18
Memory
Address [23:18]
Memory
Address [17:10]
Memory
Address [9:2]
DATA A
AC
K
A
AC
K
DATA DATA A
AC
K
DATA A
AC
K
A
AC
K
DATA DATA A
AC
K
DATA
_
A
P
ST
O
P
Input Data
[31:24]
Input Data
[23:16]
Input Data
[15:8]
Input Data
[7:0]
A
AC
K
73 82 92 55 64
A 1
ACK
R/W
R=1 | W=0
Device
Address [9:8]
1 1 1 1 0 S A Sr
re
pe
at
e
d
ST
A
R
T
DATA A
ACK
A
ACK
DATA DATA A
ACK
DATA
_
A
P
ST
O
P
Output Data
[31:24]
Output Data
[23:16]
Output Data
[15:8]
Output Data
[7:0]
27 36 45
A 0
AC
K
R/W
0
S
STA
R
T
9
R=1 | W=0
Device
Address [9:8]
SLAVE ADDR A
AC
K
1 1 1 1 0 S A
Device
Address [7:0]
18
Memory
Address [23:18]
Memory
Address [17:10]
Memory
Address [9:2]
DATA A
AC
K
A
AC
K
DATA DATA A
AC
K
NA
CK
_
A
Memory
Address [23:18]
Memory
Address [17:10]
Memory
Address [9:2]
45 54 63
27 36
73
18
SLAVE ADDR A 0
AC
K R/W
0
S
STA
R
T
9
R=1 | W=0
Device
Address [6:0]
DATA A
AC
K
A
AC
K
DATA DATA A
AC
K
DATA A
AC
K
A
AC
K
DATA DATA A
AC
K
DATA
_
A
P
ST
O
P
Input Data
[31:24]
Input Data
[23:16]
Input Data
[15:8]
Input Data
[7:0]
A
AC
K