參數(shù)資料
型號(hào)： STW5094AD/LF
廠商： STMICROELECTRONICS
元件分類： DAC
英文描述： SERIAL INPUT LOADING, 18-BIT DAC, PBGA36
封裝： 6 X 6 MM, 1.2 MM HEIGHT, TFBGA-36
文件頁(yè)數(shù)： 7/52頁(yè)
文件大?。?/td> 596K
代理商： STW5094AD/LF
14/51
2.16 Control Interface (I2C I
F)
The I2C I
F is used to program the device by writing and reading the control registers (see Fig. 14 and
15). The interface is I2C bus compatible, being the STw5094A a Slave device. SDA is the bidirectional
open-drain data pin and SCL is the input clock pin. The Device Address is E2 hex. for writing and E3 hex.
for reading.
The interface has an internal address register that keeps the current address of the control register to be
read or written. At each write access of the interface the address register is loaded with the data of the
register address field. The value in the address register is increased after each data byte read or write. It
is possible to access the interface in 2 modes: single-byte mode in which the address and data of a single
register are specified, and multi-byte mode in which the address of the first register to be written or read
is specified and all the following bytes exchanged are the data of successive address registers starting
from the one specified (in multi-byte mode the internal address counter restart from register 0 after the last
register 21). Using the multi-byte mode it is possible to write or read all the registers with a single access
to the device on the I2Cbus.
The Control interface can be used both in power-up and power-down state.
2.17 Master clock in FM mode and tone only modes
In FM mode and in Tone Only mode the Master Clock of the device can be selected to be AUXCLK, MCLK
or AMCK writing bits CFM in CR21. The Auxiliary clock AUXCLK can be used when the Audio mode clock
AMCK and the Voice mode clock MCLK are not available. AUXCLK and MCLK frequency selection is
done with bits F in CR0.
2.18 REMOCON function
The REMOCON (Remote Control) function can be used to detect the status of an headset button. The
REMOCON function is enabled by setting bit REN in CR17. If enabled, this function is active also when
the STw5094A is in power-down state. The REMOUT/OCK pin is the output pin for the REMOCON func-
tion only if OCE =0 in CR17 (Section 2.15).
A High level at REMIN input is detected as a non pressed button, while a low level is detected as a pressed
button. The "Pressed Button" information can be treated in 2 ways depending on bit RLM in CR17:
-if RLM = 0 (Transparent mode) the information at REMIN is seen at REMOUT/OCK after a debounce
time of 50ms maximum;
-if RLM = 1 (Latched Mode) the information stored in bit RDL in CR17 is seen at REMOUT/OCK. RDL
is set after a debounce time of 50ms maximum when a low level at REMIN is detected. RDL is reset
with power on initialization and can also be reset writing 0 in bit RDL.
The REMOUT/OCK output polarity can be inverted setting bit ROI in CR17: the pressed button information
is presented at REMOUT/OCK output as a logic 1 if bit ROI = 0. If ROI = 1 the polarity is inverted.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STW5094ADT 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:18-bit Low Power Asynchronous Stereo Audio DAC with Integrated Power Amplifiers and Voice Codec
STW5094ADT/LF 功能描述:音頻 DSP 18B Lo Pwr async stereo audio DAC RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
STW5094ADTLF 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:18-bit Low Power Asynchronous Stereo Audio DAC with Integrated Power Amplifiers and Voice Codec
STW5094T 功能描述:音頻 DSP 14-Bit Linear CODEC RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風(fēng)格: 封裝 / 箱體: 封裝:Tube
STW5095 制造商:ST-Ericsson 功能描述:- Trays 制造商:STMicroelectronics 功能描述:AUD CODEC 1ADC / 1DAC 20-BIT 64TFBGA - Trays
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