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參數資料
| 型號： | W682510 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | Codec |
| 英文描述： | DUAL-CHANNEL VOICEBAND CODECS |
| 中文描述： | 雙通道聲帶編解碼器 |
| 文件頁數： | 10/35頁 |
| 文件大小： | 1310K |
| 代理商： | W682510 |
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W682510/W682310
be connected to this pin , as it is an open drain output. This device is compatible with the ITU-T coding
law and output coding format recommendation.
TABLE 7.15: PCM CODES FOR ZERO AND FULL SCALE
μ
-Law
Chord bits
A-Law
Level
Sign bit
Step bits
Sign Bit
Chord Bits
Step Bits
+ Full Scale
1
000
0000
1
010
1010
+ Zero
1
111
1111
1
101
0101
- Zero
0
111
1111
0
101
0101
- Full Scale
0
000
0000
0
010
1010
7.1.3. PCMT2
The PCM signal output for channel 2 when the parallel mode is selected. The PCM output signal is
sent from PCMT2 in a sequential order, synchronized with the rising edge of the BCLK signal. The
MSB may be output at the rising edge of the FST signal, based on the timing between BCLK and FST.
This pin is in a high impedance state except during 8-bit PCM output. It is also in a high impedance
state during power-saving state or power-down. When the serial operation is selected, this pin is left
open. A pull-up resistor must be connected to this pin , as it is an open drain output. This device is
compatible with the ITU-T coding law and output coding format recommendation.
7.2. R
ECEIVE
P
ATH
The 8-bit digital input samples for the D-to-A path are serially shifted in by the PCM interface and
converted to parallel data bits. During every cycle of the frame sync FSR, the parallel data bits are fed
through the pin-selectable
μ
-Law or A-Law expander and converted to analog samples. The mode of
expansion is selected by the
μ
/A-Law pin as shown in Table 7.2. The analog samples are filtered by a
low-pass smoothing filter with a 3.4 kHz cut-off frequency, according to the ITU-T G.712 specification.
A sin(x)/x compensation is integrated with the low pass smoothing filter. The output of this filter is
buffered to provide the receive output signal RO.
7.2.1. RO1, RO2
RO1 and RO2 are the receive analog outputs for channel 1 and channel 2. The output signal of the
W682510 has an amplitude of 3.46 Vpp (2.03 Vpp for W682310) around the signal ground voltage
(V
REF
). When the digital PCM signal of +3 dBm0 is presented to PCMR1 or PCMR2, it can drive a load
of 600 Ohms or more at 5 V supply voltage for the W682510 and 1200 Ohms at 3V supply for the
W682310. During power saving mode, these outputs are at the voltage level of V
REF
with a high
impedance. These outputs have a feature that reduces audio “pop” noises when switching between
active and inactive states and back.
- 10 -
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相關代理商/技術參數 |
參數描述 |
|---|---|
| W682510_05 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:DUAL-CHANNEL VOICEBAND CODECS |
| W682510DK | 功能描述:KIT DEVELOPMENT FOR W682510 RoHS:否 類別:編程器，開發系統 >> 評估演示板和套件 系列:- 標準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
| W682510E | 功能描述:IC VOICEBAND CODEC 5V 2CH 20DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| W682510EG | 功能描述:IC VOICEBAND CODEC 5V 2CH 20DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
| W682510R | 功能描述:IC VOICEBAND CODEC 5V 2CH 20SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標準包裝:2,500 系列:- 類型:立體聲音頻 數據接口:串行 分辨率（位）:18 b ADC / DAC 數量:2 / 2 三角積分調變:是 S/N 比，標準 ADC / DAC (db):81.5 / 88 動態范圍，標準 ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤 供應商設備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR) |
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