參數(shù)資料
型號(hào)： PCM1870
英文描述： 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
中文描述： 16位低功耗立體聲音頻ADC，具有麥克風(fēng)偏置和麥克風(fēng)放大器
文件頁(yè)數(shù)： 21/49頁(yè)
文件大小： 648K
代理商： PCM1870
www.ti.com
TWO-WIRE INTERFACE [I
2
C, MODE (PIN 28) = HIGH]
The PCM1870 supports the I
2
C serial bus and the data transmission protocol for the I
2
C standard as a slave
device. This protocol is explained in I
2
C specification 2.0.
In I
2
C mode, the control terminals are changed as follows.
9
SDA
SCL
St
Start
17
8
18
9
18
9
Sp
Stop
Slave Address
ACK
DATA
ACK
DATA
ACK
Condition
Condition
R/W
Write Operation
Transmitter
M
M
M
S
S
M
S
M
Data Type
St
Slave Address
R/W
ACK
ACK
DATA
ACK
Sp
R/W:
ACK: Acknowledgement of a Byte if 0
DATA: 8 Bits (Byte)
Read Operation if 1; Otherwise, Write Operation
T0049-03
M: Master Device
St: Start Condition
M
DATA
Read Operation
Transmitter
M
M
M
S
M
S
M
M
Data Type
St
Slave Address
R/W
ACK
ACK
DATA
NACK
Sp
S
DATA
S: Slave Device
Sp: Stop Condition
PCM1870
SLAS544–MAY 2007
TERMINAL NAME
MS/ADR
MD/SDA
MC/SCL
PROPERTY
Input
Input/output
Input
DESCRIPTION
I
2
C address
I
2
C data
I
2
C clock
Slave Address
MSB
LSB
1
0
0
0
1
1
ADR
R/W
The PCM1870 has its 7-bit slave address. The first six bits (MSBs) of the slave address are factory preset to
1000 11. The next bit of the address byte is the device select bit, which can be user-defined by ADR terminal. A
maximum of two PCM1870s can be connected on the same bus at one time. Each PCM1870 responds when it
receives its own slave address.
Packet Protocol
A master device must control packet protocol, which is start condition, slave address with read/write bit, data if
write or acknowledgement if read, and stop condition. The PCM1870 supports only slave-receiver and
slave-transmitter.
Figure 20. Basic I
2
C Framework
21
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相關(guān)PDF資料
PDF描述
PCM1870RHFR 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
PCM1870RHFT 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
PCM2904 STEREO AUDIO CODEC WITH USB INTERFACE SINGLE ENEDE ANALOG INPUT/OUTPUT AND S/PDIF
PCM2904DB STEREO AUDIO CODEC WITH USB INTERFACE SINGLE ENEDE ANALOG INPUT/OUTPUT AND S/PDIF
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1870AYZFR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Low Power Stereo Audio ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
PCM1870AYZFT 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Low Power Stereo Audio ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM1870RHFR 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Lo Pwr Stereo Audio RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM1870RHFRG4 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Low Pwr St Aud ADC RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
PCM1870RHFT 功能描述:音頻模/數(shù)轉(zhuǎn)換器 IC Lo Pwr Stereo Audio RoHS:否 制造商:Wolfson Microelectronics 轉(zhuǎn)換速率: 分辨率: ADC 輸入端數(shù)量: 工作電源電壓: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: 封裝:
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