pca9691 NXP Semiconductors, pca9691 Datasheet - Page 4

• Manufacturer Part Number: pca9691
• Description: 8-bit A/d And D/a Converter
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
PCA9691_1
Product data sheet
7.1.1 Address map
7.1 Addressing
Each PCA9691 device in an I
device. The address consists of seven programmable bits and one read/write bit. The
address must be set according to
to encode the seven address bits (A[6:0]), where each of the pins can be connected to
V
condition in the I
which sets the direction of the following data transfer (see
Figure
Table 4.
Pin
A2
V
V
V
V
V
V
V
V
SDA
SDA
SDA
SDA
V
V
SDA
SDA
SDA
SDA
SDA
SCL
Fig 4.
DD
SS
SS
DD
DD
SS
SS
DD
DD
SS
DD
, V
SS
18).
A1
V
V
V
V
SDA
SDA
SDA
SDA
V
V
V
V
SDA
SDA
V
V
SDA
SDA
SDA
SCL
, SCL or SDA. The address is always sent as the first byte after the start
Address byte
SS
DD
SS
DD
SS
SS
DD
DD
SS
DD
PCA9691 address map
S
A0
SDA
SDA
SDA
SDA
V
V
V
V
V
V
V
V
SDA
SDA
SDA
SDA
V
V
SDA
SCL
2
C-bus protocol. The last bit of the address byte is the read/write-bit
SS
DD
SS
DD
SS
DD
SS
DD
SS
DD
ADDRESS
Rev. 01 — 8 April 2008
Bit
A6
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
from PCA9691
acknowledge
0
2
A5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C-bus system is activated by sending a valid address to the
A
Table
CONTROL BYTE
A4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
4. The three input pins (A2, A1 and A0) are used
A3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
from PCA9691
acknowledge
A2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
A
A1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
DATA BYTE
N = 0 to M
data bytes
Figure
A0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
from PCA9691
acknowledge
8-bit A/D and D/A converter
A
R/W
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4,
P/S
Figure 17
001aag471
PCA9691
© NXP B.V. 2008. All rights reserved.
Address
40h
42h
44h
46h
48h
4Ah
4Ch
4Eh
50h
52h
54h
56h
58h
5Ah
5Ch
5Eh
60h
62h
64h
66h
and
4 of 28
Nr
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20