參數(shù)資料
型號(hào)： PCM1727
英文描述： Stereo Audio DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE DUAL PLL TM
中文描述： 立體聲音頻數(shù)字模擬轉(zhuǎn)換器，具有可編程雙鎖相環(huán)商標(biāo)
文件頁(yè)數(shù)： 9/15頁(yè)
文件大小： 220K
代理商： PCM1727
9
PCM1727
FUNCTION
Input Audio Data Format Selection
Normal Format
I
2
S Format
DEFAULT MODE
Normal Format
Input Audio Data Bit Selection
16/20/24 Bits
16 Bits
Input LRCIN Polarity Selection
Lch/Rch = High/Low
Lch/Rch = Low/High
Lch/Rch = High/Low
De-emphasis Control
OFF
Soft Mute Control
OFF
Attenuation Control
Lch, Rch Individually
Lch, Rch Common
0dB
Lch, Rch Individually Fixed
Infinite Zero Detection Circuit Control
OFF
Operation Enable (OPE)
Enabled
Sampling Rate Selection
Standard Sampling Rate—44.1/48kHz
Double Sampling Rate—96kHz
Sampling Frequency
44.1kHz Group
48kHz Group
Standard Sampling Rate
44.1kHz
Analog Output Mode
L, R, Mono, Mute
Stereo
MAPPING OF PROGRAM REGISTERS
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
MODE0
res
res
res
res
res
A1
A0
LDL
AL7
AL6
AL5
AL4
AL3
AL2
AL1
AL0
MODE1
res
res
res
res
res
A1
A0
LDR
AR7
AR6
AR5
AR4
AR3
AR2
AR1
AR0
MODE2
res
res
res
res
res
A1
A0
PL3
PL2
PL1
PL0
IW1
IW0
OPE
DEM
MUT
MODE3
res
res
res
res
res
A1
A0
IZD
SF1
SF0
DSR1
DSR0
res
ATC
LRP
I
2
S
SPECIAL FUNCTIONS
PCM1727 includes several special functions, including digi-
tal attenuation, digital de-emphasis, soft mute, data format
selection and input word resolution. These functions are
controlled using a three-wire interface. MD (pin 9) is used
for the program data, MC (pin 8) is used to clock in the
program data, and ML (pin 7) is used to latch in the program
data. Table III lists the selectable special functions.
REGISTER
NAME
BIT
NAME
DESCRIPTION
Register 0
AL (7:0)
LDL
A (1:0)
Res
DAC Attenuation Data for Lch
Attenuation Data Load Control for Lch
Register Address
Reserved, should be “L”
Register 1
AR (7:0)
LDL
A (1:0)
Res
DAC Attenuation Data for Rch
Attenuation Data Load Control for Rch
Register Address
Reserved, should be “L”
Register 2
MUT
DEM
OPE
IW (1:0)
PL (3:0)
A (1:0)
res
Left and Right DACs Soft Mute Control
De-emphasis Control
Left and Right DACs Operation Control
Input Audio Data Bit Select
Output Mode Select
Register Address
Reserved, should be “L”
Register 3
I
2
S
LRP
ATC
Audio Data Format Select
Polarity of LRCIN (pin 19) Select
Attenuator Control
Double Sampling Rate Select
Sampling Rate Select
Infinite Zero Detection Circuit Control
Register Address
Reserved, should be “L”
DSR (1:0)
SF (1:0)
IZD
A (1:0)
Res
TABLE IV. Internal Register Mapping.
REGISTER 0 (A1 = 0, A0 = 0)
B15 B14 B13 B12 B11 B10 B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
res
res res res
res A1 A0 LDL AL7 AL6 AL5 AL4 AL3 AL2 AL1 AL0
Register 0 is used to control left channel attenuation. Bits
0 - 7 (AL0 - AL7) are used to determine the attenuation
level. The level of attenuation is given by:
ATT = [20 log10 (ATT_DATA/255)] dB
ATTENUATION DATA LOAD CONTROL
Bit 8 (LDL) is used to control the loading of attenuation data
in B0:B7. When LDL is set to 0, attenuation data will be
loaded into AL0:AL7, but it will not affect the attenuation
level until LDL is set to 1. LDR in Register 1 has the same
function for right channel attenuation.
TABLE III. Selectable Functions.
PROGRAM REGISTER BIT MAPPING
PCM1727’s special functions are controlled using four pro-
gram registers which are 16 bits long. These registers are all
loaded using MD. After the 16 data bits are clocked in, ML
is used to latch in the data to the appropriate register. Table
IV shows the complete mapping of the four registers and
Figure 8 illustrates the serial interface timing.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCM1727E 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
PCM1727E/2K 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E/2KG4 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E-2 功能描述:數(shù)模轉(zhuǎn)換器- DAC Stereo DAC w/Prog Dual PLL RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube
PCM1727E2K 制造商:TI 制造商全稱:Texas Instruments 功能描述:DIGITAL-TO-ANALOG CONVERTER With Programmable Dual PLL
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