參數(shù)資料
型號: TVP5040CPFP
廠商: TEXAS INSTRUMENTS INC
元件分類: 顏色信號轉(zhuǎn)換
英文描述: COLOR SIGNAL DECODER, PQFP80
封裝: POWER, PLASTIC, TQFP-80
文件頁數(shù): 43/109頁
文件大?。?/td> 568K
代理商: TVP5040CPFP
2–23
2.7.6
I2C Microcode Read Operation
The data written during the microcode write operation can be read from the TVP5040 program RAM. During the read
cycle, the internal microprocessors program counter resets and points to location zero in the program RAM and
remains reset. Upon completion of the read operation, a microprocessor CLEAR-RESET operation is required. This
is performed by writing into the 7F register to clear reset and resume the microprocessor function. (There is no specific
data requirement to be written into the 7F register, any data resumes the microprocessor function.)
STEP 1
0
I2C Start (master)
S
STEP 2
7
6
5
4
3
2
1
0
I2C General address (master)
1
0
1
0
X
0
STEP 3
9
I2C Acknowledge (slave)
A
STEP 4
7
6
5
4
3
2
1
0
I2C Read register address (master)
1
0
1
0
Read address=8E
STEP 5
9
I2C Acknowledge (slave)
A
STEP 6
0
I2C Stop (master)
P
2.7.6.1 Read Phase 2:
STEP 7
0
I2C Start (master)
S
STEP 8
7
6
5
4
3
2
1
0
I2C General address (master)
1
0
1
0
X
1
STEP 9
7
I2C Acknowledge (slave)
A
STEP 10
7
6
5
4
3
2
1
0
I2C Read data (slave)
Data
STEP 11
7
I2C Acknowledge (master)
A
Repeat STEP 10 and STEP 11 for all but the last byte read from program RAM.
STEP 12
7
6
5
4
3
2
1
0
I2C Read data (slave)
Data
STEP 13
9
I2C Not acknowledge (master)
A
STEP 14
0
I2C Stop (master)
P
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