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參數(shù)資料
| 型號： | CDB42518 |
| 廠商： | Cirrus Logic, Inc. |
| 元件分類： | Codec |
| 英文描述： | 110 dB, 192 kHz 6-Ch Codec with S/PDIF Receiver |
| 中文描述： | 110分貝192千赫6通道編解碼器與S / PDIF接收器 |
| 文件頁數(shù)： | 39/90頁 |
| 文件大?。?/td> | 1559K |
| 代理商： | CDB42518 |
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DS583PP5
39
CS42516
4.7.2
In I
2
C mode, SDA is a bidirectional data line. Data is clocked into and out of the part by the clock, SCL.
There is no CS pin. Pins AD0 and AD1 form the two least significant bits of the chip address and should
be connected through a resistor to VLC or DGND as desired. The state of the pins is sensed while the
CS42516 is being reset.
The signal timings for a read and write cycle are shown in Figure 22 and Figure 23. A Start condition is
defined as a falling transition of SDA while the clock is high. A Stop condition is a rising transition while
the clock is high. All other transitions of SDA occur while the clock is low. The first byte sent to the
CS42516 after a Start condition consists of a 7 bit chip address field and a R/W bit (high for a read, low
for a write). The upper 5 bits of the 7-bit address field are fixed at 10011. To communicate with a CS42516,
the chip address field, which is the first byte sent to the CS42516, should match 10011 followed by the
settings of the AD1 and AD0. The eighth bit of the address is the R/W bit. If the operation is a write, the
next byte is the Memory Address Pointer (MAP) which selects the register to be read or written. If the op-
eration is a read, the contents of the register pointed to by the MAP will be output. Setting the auto incre-
ment bit in MAP allows successive reads or writes of consecutive registers. Each byte is separated by an
acknowledge bit. The ACK bit is output from the CS42516 after each input byte is read, and is input to the
CS42516 from the microcontroller after each transmitted byte.
I
2
C Mode
Since the read operation can not set the MAP, an aborted write operation is used as a preamble. As
shown in Figure 23, the write operation is aborted after the acknowledge for the MAP byte by sending a
stop condition. The following pseudocode illustrates an aborted write operation followed by a read oper-
ation.
Send start condition.
Send 10011xx0 (chip address & write operation).
Receive acknowledge bit.
Send MAP byte, auto increment off.
Receive acknowledge bit.
4 5 6 7
24 25
SCL
CHIP ADDRESS (WRITE)
MAP BYTE
DATA
DATA +1
START
ACK
STOP
ACK
ACK
ACK
1 0 0 1 1 AD1 AD0 0
SDA
INCR
6 5 4 3 2 1 0
7 6 1 0
7 6 1 0
7 6 1 0
0 1 2 3
8 9
12
16 17 18 19
10 11
13 14 15
27 28
26
DATA +n
Figure 22. Control Port Timing, I
2
C Write
SCL
CHIP ADDRESS (WRITE)
MAP BYTE
DATA
DATA +1
START
ACK
STOP
ACK
ACK
ACK
1 0 0 1 1 AD1 AD0 0
SDA
1 0 0 1 1 AD1 AD0 1
CHIP ADDRESS (READ)
START
INCR
6 5 4 3 2 1 0
7 0
7 0
7 0
NO
16
8 9
12 13 14 15
4 5 6 7
0 1
20 21 22 23 24
26 27 28
2 3
10 11
17 18 19
25
ACK
DATA + n
STOP
Figure 23. Control Port Timing, I
2
C Read
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| CDB42528 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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| CDB4270 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd 105dB 192kHz CODEC RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB4271 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd CS4271 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| CDB4272 | 功能描述:音頻 IC 開發(fā)工具 Eval Bd CS4272 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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