ADM1024
1
9
1
9
SCL
SDA
0
START BY
MASTER
1
0
1
1 A1 A0 R/W
D7
FRAME 1
SERIAL BUS ADDRESS BYTE
ACK. BY
ADM1024
1
SCL (CONTINUED)
D6 D5 D4 D3 D2 D1 D0
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
ADM1024
9
SDA (CONTINUED)
D7 D6 D5 D4 D3 D2 D1 D0
FRAME 3
DATA BYTE
ACK. BY STOP BY
ADM1024 MASTER
Figure 2a. Writing a Register Address to the Address Pointer Register, then Writing Data to the Selected Register
1
9
1
9
SCL
SDA
0
START BY
MASTER
1
0
1
1 A1 A0 R/W
D7
FRAME 1
SERIAL BUS ADDRESS BYTE
ACK. BY
ADM1024
D6 D5 D4 D3 D2 D1 D0
FRAME 2
ADDRESS POINTER REGISTER BYTE
ACK. BY
ADM1024
STOP BY
MASTER
Figure 2b. Writing to the Address Pointer Register Only
1
9
1
9
SCL
SDA
0
START BY
MASTER
1
0
1
1
A1 A0 R/W
D7 D6 D5 D4 D3 D2 D1 D0
FRAME 1
SERIAL BUS ADDRESS BYTE
ACK. BY
ADM1024
FRAME 2
DATA BYTE FROM ADM1024
NO ACK. STOP BY
BY MASTER MASTER
Figure 2c. Reading Data from a Previously Selected Register
–10–
REV. B