參數(shù)資料
型號: VL6524
廠商: 意法半導(dǎo)體
英文描述: VGA single-chip camera module
中文描述: 顯卡單芯片相機(jī)模塊
文件頁數(shù): 34/70頁
文件大?。?/td> 505K
代理商: VL6524
Host communication - I2C control interface
VL6524/VS6524
34/70
Figure 20.
Device addresses
a)
b)
The addressed slave acknowledges the device address.
Data transmitted on the bus
a)
When a write is performed then master outputs 8-bits of data on SDA (MS Bit
first).
b)
When a read is performed then slave outputs 8-bits of data on SDA (MS Bit First).
Data receive acknowledge
a)
When a write is performed slave acknowledges data.
b)
When a read is performed master acknowledges data.
Repeat 4 and 5 until all the required data has been written or read.
Minimum number of data bytes for a read =1 (Shortest Message length is 2-bytes).
The master outputs a negative acknowledge for the data when reading the last byte of
data. This causes the slave to stop the output of data and allows the master to generate
a STOP condition.
Master generates a STOP condition or a repeated START.
R/W = 0 then the master (transmitter) is writing to the slave (receiver).
R/W = 1 the master (receiver) is reading from the slave (transmitter).
3.
4.
5.
6.
Data valid
The data on SDA is stable during the high period of SCL. The state of SDA is changed
during the low phase of SCL. The only exceptions to this are the start (S) and stop (P)
conditions as defined below. (See
Figure 33: Timing specification
and
Table 38: Timing
specification
).
Figure 21.
SDA data valid
0
0
1
0
0
0
0
R/W
Sensor Address
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
1
Sensor write Address 20
H
Sensor read Address 21
H
Data line
stable
Data valid
Data line
stable
Data valid
Data change
SDA
SCL
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