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參數(shù)資料
| 型號(hào)： | PCM1851PJT |
| 英文描述： | 24-BIT, 96-kHz STEREO A/D CONVERTER WITH 6 X 2-CHANNEL MUX AND PGA |
| 中文描述： | 24位，96千赫立體聲A / D轉(zhuǎn)換器6 × 2通道的MUX和PGA |
| 文件頁數(shù)： | 24/30頁 |
| 文件大?。?/td> | 370K |
| 代理商： | PCM1851PJT |
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PCM1850
PCM1851
SLES108
MARCH 2004
www.ti.com
24
Packet Protocol
A master device must control packet protocol, which consists of start condition, slave address with read/write bit, data if
write or acknowledgement if read, and stop condition. The PCM1851 supports only slave receivers, so the R/W bit must
be set to 0.
9
SDA
SCL
St
1
7
8
1
8
9
1
8
9
9
Sp
Slave Address
ACK
DATA
ACK
DATA
ACK
ACK
R/W
R/W:
ACK: Acknowledgement of a Byte if 0
DATA: 8 Bits (Byte)
Read Operation if 1; Otherwise, Write Operation
Stop
Condition
Start
Condition
Transmitter
M
M
M
S
M
S
M
S
S
M
Data Type
St
Slave Address
R/W
ACK
DATA
ACK
DATA
ACK
ACK
Sp
M: Master Device
St: Start Condition
S: Slave Device
Sp: Stop Condition
Figure 30. Basic I
2
C Framework
Write Operation
The PCM1851 has only the write mode. A master can write to any PCM1851 registers using single or multiple accesses.
The master sends a PCM1851 slave address with a write bit, a register address, and the data. If multiple access is required,
the address is that of the starting register, followed by the data to be transferred. When the data are received properly, the
index register is incremented by 1 automatically. When the index register reaches 33h, the next value is 31h. When
undefined registers are accessed, the PCM1851 does not send an acknowledgement. Figure 31 is a diagram of the write
operation. The register address and the write data are 8 bits and MSB-first format.
Transmitter
M
M
M
S
M
S
M
M
Data Type
St
Slave Address
W
ACK
Reg Address
ACK
Write Data 1
Sp
S
M
ACK
Write Data 2
S
ACK
S
ACK
M: Master Device
St: Start Condition
S: Slave Device
W: Write
Sp: Stop Condition
ACK: Acknowledge
Figure 31. Framework for Write Operation
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| PCM1860DBT | 功能描述:ADC, Audio 24 bit 192k I2S 30-TSSOP 制造商:texas instruments 系列:- 包裝:管件 零件狀態(tài):有效 類型:ADC，音頻 分辨率（位）:24 b 采樣率（每秒）:192k 數(shù)據(jù)接口:I2S 電壓源:模擬和數(shù)字 電壓 - 電源:3 V ~ 3.6 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:30-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商器件封裝:30-TSSOP 標(biāo)準(zhǔn)包裝:60 |
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