參數(shù)資料
型號(hào)： MAX8893BEWV+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 微控制器/微處理器
英文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PBGA30
封裝： 3 X 2.50 MM, 0.64 MM HEIGHT, ROHS COMPLIANT, WLP-30
文件頁(yè)數(shù)： 28/51頁(yè)
文件大?。?/td> 4976K
代理商： MAX8893BEWV+
FPMIC for Multimedia Application Processor
in 2.5mm x 3.0mm WLP
MAX8893A/MAX8893B/MAX8893C
34 _____________________________________________________________________________________
Read Operation
The method for reading a single register (byte) is shown
in section A of Figure 13. To read a single register:
1)
The master sends a start command.
2)
The master sends the 7-bit slave address followed
by a read bit (0x7D).
3)
The addressed slave asserts an acknowledge by
pulling SDA low.
4)
The master sends an 8-bit register pointer.
5)
The slave acknowledges the register pointer.
6)
The master sends a REPEATED START condition.
7)
The master sends the 7-bit slave address followed
by a read bit.
8)
The slave asserts an acknowledge by pulling SDA low.
9)
The slave sends the 8-bit data (contents of the register).
10) The master asserts an acknowledge by pulling
SDA low.
11) The master sends a STOP condition.
In addition, the MAX8893A/MAX8893B/MAX8893C can
read a block of multiple sequential registers as shown in
section B of Figure 13. Use the following procedure to
read a sequential block of registers:
1)
The master sends a start command.
2)
The master sends the 7-bit slave address followed
by a read bit (0x7D).
3)
The addressed slave asserts an acknowledge by
pulling SDA low.
4)
The master sends an 8-bit register pointer of the
first register in the block.
5)
The slave acknowledges the register pointer.
6)
The master sends a REPEATED START condition.
7)
The master sends the 7-bit slave address followed
by a read bit.
8)
The slave asserts an acknowledge by pulling SDA low.
9)
The slave sends the 8-bit data (contents of the register).
10) The master asserts an acknowledge by pulling SDA low.
11) Steps 9 and 10 are repeated for as many registers
in the block, with the register pointer automatically
incremented each time.
12) The master sends a STOP condition.
Figure 12. Writing to the MAX8893A/MAX8893B/MAX8893C
1
S
NUMBER OF BITS
R/W
SLAVE ADDRESS
7
0
1
8
REGISTER POINTER
1
8
DATA
1
P
1
SLAVE TO
MASTER
MASTER TO
SLAVE
LEGEND
A. WRITING TO A SINGLE REGISTER WITH THE WRITE BYTE PROTOCOL
1
S
NUMBER OF BITS
R/W
SLAVE ADDRESS
7
0
1
8
REGISTER POINTER X
1
A
1
8
DATA X
1
B. WRITING TO MULTIPLE REGISTERS
8
DATA X+n-1
1
8
DATA X+n
1
NUMBER OF BITS
P
8
DATA X+1
1
A
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