參數(shù)資料
型號(hào)： PCM1870RHFT
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
文件頁數(shù)： 19/49頁
文件大小： 648K
代理商： PCM1870RHFT
www.ti.com
THREE-WIRE INTERFACE (SPI, MODE (PIN 28) = LOW)
All write operations for the serial control port use 16-bit data words.
Figure 17
shows the control data word
format. The most significant bit must be 0. There are seven bits, labeled IDX[6:0], that set the register address
for the write operation. The least-significant eight bits, D[7:0], contain the data to be written to the register
specified by IDX[6:0].
MSB
0
IDX6
IDX5
IDX4
IDX3
IDX2
IDX1
IDX0
D7
D6
D5
D4
D3
D2
D1
D0
LSB
Register Index (or Address)
Register Data
R0001-01
MC
MS
MD
16 Bits
(1) Single Write Operation
MSB
LSB
MSB
(2) Continuous Write Operation
MSB
8 Bits x N Frames
MC
MS
MD
N Frames
LSB MSB
LSB MSB
LSB
MSB
LSB
Register Index
8 Bits
Register (N) Data
Register (N+1) Data
Register (N+2) Data
T0012-03
PCM1870
SLAS544–MAY 2007
Figure 18
shows the functional timing diagram for writing to the serial control port. To write the data into the
mode register, the data is clocked into an internal shift register on the rising edge of the MC clock. The serial
data should change on the falling edge of the MC clock and should be LOW during write mode. The rising edge
of MS should be aligned with the falling edge of the last MC clock pulse in the 16-bit frame. The MC can run
continuously between transactions while MS is in the LOW state.
Figure 17. Control Data Word Format for MD
Figure 18. Register Write Operation
19
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PCM1870YZFT 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:
PCM-188 功能描述:電線鑒定 Pre-Printed WM Card, Vinyl Cloth, .22" W RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in
PCM-189 功能描述:電線鑒定 Pre-Printed WM Card, Vinyl Cloth, .22" W RoHS:否 制造商:TE Connectivity / Q-Cees 產(chǎn)品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in
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