參數(shù)資料
型號(hào): TLV320AIC14I
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PDSO30
封裝: PLASTIC, TSSOP-30
文件頁(yè)數(shù): 16/54頁(yè)
文件大小: 450K
代理商: TLV320AIC14I
3–10
SCL
SDA
A5
A4
A3
A2
A1
A0
0
ACK
B7
B6
B5
B4
B3
R2
R1
R0
6
A6
ACK
54
SCL
SDA
A5
A4
A3
A2
A1
A0
0
ACK
D7
D6
D5
D4
D3
D2
D1
D0
A6
D7
D6
D5
D4
D3
D2
D1
D0
ACK
Start Bit = 0
Programmable I2C Device Address
Set by Control Register 2
SMARTDM Device Address
(see Table 3-1)
Index Register Address
(Index)
Stop Bit = 1
xxxxx = Don’t Care
Start Bit = 0
SMARTDM Device Address
(see Table 3-1)
Control Register Data
(Index)
Control Register Data
(Index+1)
I2C Read Sequence
I2CI2C
I2C
65
4
Programmable I2C Device Address
Set by Control Register 2
I2CI2C
I2C
Figure 3–11. I2C Read Sequence
Each AIC has an index register address. To perform a write operation, make the LSB of the first byte as 0 (write) (see
Figure 3–12). During the second byte, the index register address is initialized and mode (broadcast/default) is set.
From the third byte onwards, write data to the control register (given by index register) and increment the index
register until stop or repeated start occurs. For operation, make the LSB of the first byte as 1 (read). From the second
byte onwards, AIC starts transmitting data from the control register (given by the index register) and increments the
index register. For setting the index register perform operation the same as write case for 2 bytes, and then give a
stop or repeated start.
S/Sr –> Start/Repeated Start.
S/Sr
I2C Device Address (3 Bit)+
Dtdmsp Device Address (+)
R/W
= 0
Mode (5 Bit) + Index Reg
Address
(3 Bit)
Ack
Control Reg. Data
(Write)
Ack
Control Reg. Data
(Write)
7 Bit
1 Bit
8 Bit
Increment Index Reg. Address
Default/Broadcast
(00000/11111)
Write Mode
To The Address Given
by Index Reg. Address
To The Address Given
by Index Reg. Address
S/Sr
I2C Device Address (3 Bit)+
Dtdmsp Device Address (+)
R/W
= 1
Control Reg. Data
(Read)
Ack
Control Reg. Data
(Read)
Ack
7 Bit
1 Bit
8 Bit
Read Mode
From The Address Given
by Index Reg. Address
From The Address Given
by Index Reg. Address
Increment Index Reg. Address
S/Sr
I2C Device Address (3 Bit)+
Dtdmsp Device Address (+)
R/W
= 0
Mode (5 Bit) + Index Reg.
Address
(3 Bit)
Ack
7 Bit
1 Bit
8 Bit
For Initializing Index Reg Address
Stop
Figure 3–12. Index Register Addresses
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