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參數資料
| 型號： | UDA1342 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | Codec |
| 英文描述： | Audio CODEC |
| 中文描述： | 音頻編解碼器 |
| 文件頁數： | 12/44頁 |
| 文件大?。?/td> | 180K |
| 代理商： | UDA1342 |
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2000 Mar 29
12
Philips Semiconductors
Preliminary specification
Audio CODEC
UDA1342TS
8.11
Sampling speed
The UDA1342TS operates with sample frequencies from
16 to 110 kHz. This range holds for the CODEC as a
whole. The DAC part can be configured in the L3-bus and
I
2
C-bus mode to accept 2 times and even 4 times the data
speed (e.g. f
s
is 96 or 192 kHz), but in these modes not all
of the features can be used.
Some examples of the input oversampling rate settings
are shown in Table 4.
Important:
in the double speed mode an input signal of
0 dB is allowed, but in the quad speed mode the input
signal must be limited to
6 dB to prevent the system from
clipping.
Table 4
Examples of the input oversampling rate settings
SYSTEM CLOCK
SYSTEM
CLOCK
FREQUENCY
SETTING
SAMPLING
FREQUENCY
(kHz)
INPUT OVER-
SAMPLING
RATE
FEATURES SUPPORTED
12.288 MHz (256
×
48 kHz)
256f
s
48
96
192
44.1
88.2
176.4
44.1
88.2
176.4
single speed
double speed
quad speed
single speed
single speed
double speed
single speed
single speed
double speed
all
only master volume and mute
no features
all
all
only master volume and mute
all
all
only master volume and mute
22.5792 MHz (512
×
44.1 kHz)
512f
s
256f
s
33.8688 MHz (768
×
44.1 kHz)
768f
s
384f
s
8.12
Power-on reset
The UDA1342TS has an internal Power-on reset circuit
(see Fig.7) which resets the test control block. All the
digital sound processing features and the system
controlling features are set to their default setting in the
L3-bus and I
2
C-bus mode.
The reset time (see Fig.8) is determined by an external
capacitorwhichisconnectedbetweenpin V
ref
andground.
The reset time should be at least 1
μ
s for V
ref
< 1.25 V.
When V
DDA(DAC)
is switched off, the device will be reset
again for V
ref
< 0.75 V.
During the reset time the system clock should be running.
handbook, halfpage
VDDA(DAC)
Vref
25
28
MGU001
UDA1342TS
C1
>
10
μ
F
RESET
CIRCUIT
8 k
8 k
Fig.7 Power-on reset circuit.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| UDA1342TS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Audio CODEC |
| UDA1342TS/N1 | 制造商:NXP Semiconductors 功能描述:IC CODEC AUDIO MINIDISC 28-SSOP 制造商:NXP Semiconductors 功能描述:IC, CODEC, AUDIO, MINIDISC, 28-SSOP 制造商:NXP Semiconductors 功能描述:IC, CODEC, AUDIO, MINIDISC, 28-SSOP; Audio CODEC Type:Stereo Codec; No. of ADCs:4; No. of DACs:2; No. of Input Channels:4; No. of Output Channels:2; Audio IC Case Style:SSOP; No. of Pins:28; ADC / DAC Resolution:24bit; ADCs / DACs ;RoHS Compliant: Yes |
| UDA1342TS/N1,512 | 功能描述:接口—CODEC AUDIO CODEC MINIDISC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| UDA1342TS/N1,518 | 功能描述:接口—CODEC MINISOUND 3 RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
| UDA1342TSDB | 功能描述:接口—CODEC AUDIO CODEC MINIDISC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率:48 kSPs 接口類型:I2C ADC 數量:2 DAC 數量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
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