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參數資料
| 型號： | TS4851IJT |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA18 |
| 封裝： | FCP-18 |
| 文件頁數： | 22/28頁 |
| 文件大?。?/td> | 1280K |
| 代理商： | TS4851IJT |
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SPI Bus Interface
TS4851
3/28
2 SPI Bus Interface
2.1 Description of SPI operation
The serial data bits are organized into a field containing 8 bits of data as shown in Table 3. The DATA 0 to
DATA 2 bits determine the output mode of the TS4851 as shown in Table 2. The DATA 3 to DATA 7 bits
determine the gain level setting as illustrated by Table 3. For each SPI transfer, the data bits are written to
the DATA pin with the least significant bit (LSB) first. All serial data are sampled at the rising edge of the
CLK signal. Once all the data bits have been sampled, ENB transitions from logic-high to logic low to
complete the SPI sequence. All 8 bits must be received before any data latch can occur. Any excess CLK
and DATA transitions will be ignored after the height rising clock edge has occurred. For any data
sequence longer than 8 bits, only the first 8 bits will get loaded into the shift register and the rest of the bits
will be disregarded.
Table 2.
Pin description
Pin
Functional Description
DATA
This is the serial data input pin.
CLK
This is the clock input pin.
ENB
This is the SPI enable pin active at high level.
Table 3.
Bit allocation
DATA
MODES
LSB
DATA 0
Mode 1
DATA 1
Mode 2
DATA 2
Mode 3
DATA 3
gain 1
DATA 4
gain 2
DATA 5
gain 3
DATA 6
gain 4
MSB
DATA 7
gain 5
Table 4.
Output mode selection: G from -34.5dB to +12dB (by steps of 1.5dB)
Output
Mode #
DATA 2
DATA 1
DATA 0
SPKERout1
1)
SD = Shutdown Mode, P = Phone in Input, R = Rin input and L = Lin input
Rout
Lout
0
SD
1
0
1
6dBxP
SD
2
0
1
0
SD
0dBxP
30
1
Gx(R+L)
SD
41
0
SD
GxR
GxL
51
0
1
Gx(R+L)
+6dBxP
SD
6
1
0
SD
GxR+0dBxP
GxL+0dBxP
7
1
6dBxP
GxR+0dBxP
GxL+0dBxP
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TS4855 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL |
| TS4855_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:LOUDSPEAKER & HEADSET DRIVER WITH VOLUME CONTROL |
| TS4855EIJT | 功能描述:音頻放大器 Loudspeaker and headset driver RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS4855IJT | 功能描述:音頻放大器 Low Power Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TS486 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE |
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