ISL22316 Intersil Corporation, ISL22316 Datasheet - Page 11

• Manufacturer Part Number: ISL22316
• Manufacturer: Intersil Corporation

The ISL22316 responds with an ACK after recognition of a
START condition followed by a valid Identification Byte, and
once again after successful receipt of an Address Byte. The
ISL22316 also responds with an ACK after receiving a Data
Byte of a write operation. The master must respond with an
ACK after receiving a Data Byte of a read operation
A valid Identification Byte contains 01010 as the five MSBs,
and the following two bits matching the logic values present
at pins A1 and A0. The LSB is the Read/Write bit. Its value is
SDA OUTPUT FROM
SDA OUTPUT FROM
TRANSMITTER
SCL FROM
RECEIVER
SDA
SCL
MASTER
SIGNALS FROM
SIGNAL AT SDA
SIGNALS FROM
THE MASTER
THE SLAVE
11
START
FIGURE 16. VALID DATA CHANGES, START, AND STOP CONDITIONS
START
FIGURE 17. ACKNOWLEDGE RESPONSE FROM RECEIVER
HIGH IMPEDANCE
S
A
R
T
T
FIGURE 18. BYTE WRITE SEQUENCE
0
IDENTIFICATION
1
1
0
BYTE
1
STABLE
0
DATA
A1
ISL22316
A0
WRITE
0
A
C
K
CHANGE
DATA
0 0 0 0
ADDRESS
“1” for a Read operation, and “0” for a Write operation (See
Table 3).
(MSB)
BYTE
0
0
STABLE
DATA
TABLE 3. IDENTIFICATION BYTE FORMAT
1
A
C
K
8
Logic values at pins A1 and A0 respectively
0
DATA
BYTE
1
HIGH IMPEDANCE
STOP
ACK
9
0
A
C
K
S
T
O
P
A1
A0
June 23, 2006
FN6186.0
(LSB)
R/W