参数资料
型号: ISL22316
厂商: Intersil Corporation
英文描述: Low Noise, Low Power I2C Bus, 128 Taps(低噪声,低功率,I2C总线, 128抽头电位器)
中文描述: 低噪声,低功耗I2C总线,128丝锥(低噪声,低功率和I2C总线,128抽头电位器)
文件页数: 11/13页
文件大小: 483K
代理商: ISL22316
11
FN6186.0
June 23, 2006
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
“1” for a Read operation, and “0” for a Write operation (See
Table 3).
TABLE 3. IDENTIFICATION BYTE FORMAT
0
1
0
1
0
A1
A0
R/W
(MSB)
(LSB)
Logic values at pins A1 and A0 respectively
SDA
SCL
START
DATA
STABLE
DATA
CHANGE
STOP
DATA
STABLE
FIGURE 16. VALID DATA CHANGES, START, AND STOP CONDITIONS
SDA OUTPUT FROM
TRANSMITTER
SDA OUTPUT FROM
RECEIVER
8
1
9
START
ACK
SCL FROM
MASTER
HIGH IMPEDANCE
HIGH IMPEDANCE
FIGURE 17. ACKNOWLEDGE RESPONSE FROM RECEIVER
S
T
A
R
T
S
T
O
P
IDENTIFICATION
BYTE
ADDRESS
BYTE
DATA
BYTE
A
C
K
SIGNALS FROM
THE MASTER
SIGNALS FROM
THE SLAVE
A
C
K
0
0
0
1
1
A
C
K
WRITE
SIGNAL AT SDA
0 0 0 0
A0
A1
FIGURE 18. BYTE WRITE SEQUENCE
0
ISL22316
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