国产精品成人VA在线观看-国产乱妇乱子视频在播放-国产日韩精品一区二区三区在线-国模精品一区二区三区

參數(shù)資料
型號(hào): W6690
廠商: WINBOND ELECTRONICS CORP
英文描述: ISDN S/T Interface Controller(ISDN S/T接口控制器)
中文描述: 綜合業(yè)務(wù)數(shù)字網(wǎng)的S / T接口控制器(綜合業(yè)務(wù)數(shù)字網(wǎng)S / T的接口控制器)
文件頁(yè)數(shù): 29/76頁(yè)
文件大小: 471K
代理商: W6690
Preliminary W6690
Publication Release Date: March 1998
- 29 -
Revision A1
7.5 PCM Port
There are two PCM ports in W6690. Each PCM port can connect to a PCM codec filter chip. These
two PCM ports share the same signals except for the frame synchronization clocks. The frame
synchronization clocks (PFCK1-2) are 8 KHz and the bit synchronization clock (PBCK) is 1.536 MHz.
The bit data rate is 64 Kbps per port.
7.6 D Channel HDLC Controller
There are two HDLC protocols that are used for ISDN layer 2 functions: LAPD and LAPB. Their frame
formats are shown below.
LAPB modulo 8:
Flag
(1 octet)
Address
(1octet)
Control
(1octet)
Information
(0 or N octets)
FCS
(2 octets)
Flag
Control field bits
7
6
5
4
3
2
1
0
I frame
N(R)
P
N(S)
0
S frame
N(R)
P/F
S
S
0
1
U frame
M
M
M
P/F
M
M
1
1
LAPB modulo 128:
Flag
(1 octet)
Address
(1octet)
Control
(1 or 2 octets)
Information
(0 or N octets)
FCS
(2 octets)
Flag
1st
octet
2nd
octet
Control field bits
7
6
5
4
3
2
1
0
0
7
6
5
4
3
2
1
0
P
I frame
N(S)
N(R)
S frame
X
X
X
X
S
S
0
1
N(R)
P/F
U frame
M
M
M
P/F
M
M
1
1
相關(guān)PDF資料
PDF描述
W66910CD TE Mode ISDN S/T-Controller with Microprocessor Interface
W6691 ISDN S/T Interface Transceiver
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)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W6690ASX-1 制造商:Magnecraft 功能描述:Relay SSR 280V AC-IN 90A 660V AC-OUT 4-Pin
W6690DSX-1 制造商:Magnecraft 功能描述:Relay SSR 16mA 32V DC-IN 90A 660V AC-OUT 4-Pin
W6691 制造商:WINBOND 制造商全稱:Winbond 功能描述:ISDN S/T Interface Transceiver
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