- 您現在的位置：買賣IC網 > PDF目錄363894 > W681360RG (WINBOND ELECTRONICS CORP) 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC PDF資料下載
參數資料
| 型號： | W681360RG |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 編解碼器 |
| 英文描述： | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| 中文描述： | MU-LAW, LINEAR CODEC, PDSO20 |
| 封裝： | 0.209 INCH, ROHS COMPLIANT, PLASTIC, SSOP-20 |
| 文件頁數： | 12/34頁 |
| 文件大小： | 348K |
| 代理商： | W681360RG |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁當前第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁
W681360
Publication Release Date: September 2005
- 12 -
Revision A.2
7.4.
PCM
I
NTERFACE
The PCM interface is controlled by pins BCLKR, FSR, BCLKT & FST. The input data is received
through the PCMR pin and the output data is transmitted through the PCMT pin.
The Long Frame Sync or Short Frame Sync interface mode can be selected by connecting the BCLKR
or BCLKT pin to a 256kHz to 4.800 MHz clock and connecting the FSR or FST pin to the 8kHz frame
sync. The device synchronizes the data word for the PCM interface and the CODEC sample rate on
the positive edge of the Frame Sync signal. Long Frame Sync is recognized when the FST pin is held
HIGH for two consecutive falling edges of the bit-clock at the BCLKT pin. Short Frame Sync Mode is
recognized when the Frame Sync signal at pin FST is HIGH for one and only one falling edge of the
bit-clock at the BCLKT pin.
7.4.1. Long Frame Sync
The device recognizes a Long Frame Sync when the FST pin is held HIGH for two consecutive falling
edges of the bit-clock at the BCLKT pin. The length of the Frame Sync pulse can vary from frame to
frame, as long as the positive frame sync edge occurs every 125
μ
sec. During data transmission in the
Long Frame Sync mode, the transmit data pin PCMT will become low impedance when the Frame
Sync signal FST is HIGH or when the 13-bit data word is being transmitted. The transmit data pin
PCMT will become high impedance when the Frame Sync signal FST becomes LOW while the data is
transmitted or when half of the LSB is transmitted. The internal decision logic will determine whether
the next frame sync is a long or a short frame sync, based on the previous frame sync pulse. To avoid
bus collisions, the PCMT pin will be high impedance for two frame sync cycles after every power down
state. Long Frame Sync mode is illustrated below. More detailed timing information can be found in
the interface timing section.
Long Frame Sync (Transmit and Receive Have Individual Clocking)
FST
(FSR)
PCMT
7
6
5
4
3
2
1
BCLKT
(BCLKR)
12
11
10
9
8
13
PCMR
7
6
5
4
3
2
1
12
11
10
9
8
13
don't care
don't care
FIGURE 7.4: LONG FRAME SYNC PCM MODE
7.4.2. Short Frame Sync
The W681360 operates in the Short Frame Sync Mode when the Frame Sync signal at pin FST is
HIGH for one and only one falling edge of the bit-clock at the BCLKT pin. On the following rising edge
of the bit-clock, the W681360 starts clocking out the data on the PCMT pin, which will also change
from high to low impedance state. The data transmit pin PCMT will go back to the high impedance
state halfway through the LSB. The Short Frame Sync operation of the W681360 is based on a 13-bit
data word. When receiving data on the PCMR pin, the data is clocked in on the first falling edge after
the falling edge that coincides with the Frame Sync signal. The internal decision logic will determine
whether the next frame sync is a long or a short frame sync, based on the previous frame sync pulse.
To avoid bus collisions, the PCMT pin will be high impedance for two frame sync cycles after every
power down state. Short Frame Sync mode is illustrated below. More detailed timing information can
be found in the interface timing section.
相關PDF資料 |
PDF描述 |
|---|---|
| W681360S | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| W681360SG | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| W681360W | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| W681360WG | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| W681360YG | 3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W681360RG TR | 功能描述:IC VOICEBAND CODEC 3V 1CH 20SSOP 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) |
| W681360S | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
| W681360SG | 功能描述:IC VOICEBAND CODEC 3V 1CH 20SOP 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) |
| W681360SG TR | 功能描述:IC VOICEBAND CODEC 3V 1CH 20SOP 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) |
| W681360W | 制造商:WINBOND 制造商全稱:Winbond 功能描述:3V SINGLE-CHANNEL 13-BIT LINEAR VOICE-BAND CODEC |
發布緊急采購，3分鐘左右您將得到回復。