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參數(shù)資料
| 型號： | W6691 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | ISDN S/T Interface Transceiver |
| 中文描述： | 綜合業(yè)務數(shù)字網(wǎng)的S / T接口收發(fā)器 |
| 文件頁數(shù)： | 20/106頁 |
| 文件大小： | 428K |
| 代理商： | W6691 |
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Preliminary W6691
Publication Release Date: Sep 2001
20 Revision 1.1
The peripheral simple I/O is used to control other peripheral devices such as CODEC, SLIC, DTMF detector,
LEDs.
7.1.2 Interface and Operating Modes
The W6691 can be configured for the following application:
ISDN terminals --- TE mode (M1=0 & M0=0)
ISDN subscriber line termination --- LT-S mode (M1=1 & M0=0)
ISDN trunk line termination ---LT-T mode (M1=0 & M0=1)
TE , LT-S and LT-T modes are configured by setting mode pins (M1 and M0).
7.2.1 S/T Interface Transmitter/Receiver
According to ITU-T I.430, pseudo-ternary code with 100% pulse width is used in both directions of
transmission on the S/T interface. The binary "1" is represented by no line signal (zero volt), whereas a binary
"0" is represented by a positive or negative pulse.
Data transmissions on the S/T interface are arranged as frame structures. The frame is 250
μ
s long and
consists of 48 bits, which corresponds to a 192 kbit/s line rate. Each frame carries two octets of B1 channel,
two octets of B2 channel and four D channel bits. Therefore, the 2B+D data rate is 144 kbit/s. The frame
structure is shown in Fig.7.1.
The frame begin is marked by a framing bit, which is followed by a DC balancing bit. The first binary "0"
following the framing bit balancing bit is of the same polarity as the framing bit balancing bit, and subsequent
binary zeros must alternate in polarity.
相關PDF資料 |
PDF描述 |
|---|---|
| W6691CD | ISDN S/T Interface Transceiver |
| W6691CP | ISDN S/T Interface Transceiver |
| W6692 | PCI Bus ISDN S/T Interface Controller(PCI總線的ISDN S/T接口控制器) |
| W6693A | USB Bus ISDN S/T Interface Controller(USB總線的ISDN S/T接口控制器) |
| W6694 | PCI Bus ISDN S/T Interface Controller(PCI總線的ISDN S/T接口控制器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| W66910 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| W66910CD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:TE Mode ISDN S/T-Controller with Microprocessor Interface |
| W6691CD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ISDN S/T Interface Transceiver |
| W6691CP | 制造商:WINBOND 制造商全稱:Winbond 功能描述:ISDN S/T Interface Transceiver |
| W6692 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:PCI Bus ISDN S/T-Controller |
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