- 您现在的位置：买卖IC网 > PDF目录381098 > ST5481TQF7 (意法半导体) L.O.U.I.S - LOW COST USB ISDN SOLUTION PDF资料下载
参数资料
| 型号： | ST5481TQF7 |
| 厂商： | 意法半导体 |
| 英文描述： | L.O.U.I.S - LOW COST USB ISDN SOLUTION |
| 中文描述： | 圣路易斯-低成本USB综合业务数字网解决方案 |
| 文件页数： | 6/18页 |
| 文件大小： | 167K |
| 代理商： | ST5481TQF7 |
ST5481
6/18
5 - ISDN ACCESS
The device is directly connected to the ISDN line
at S0 interface point.
4 pins are dedicated to this access:
LIP, LIN: receive AMI differential signals inputs
connected to the appropriate transformer LOP,
LON: transmit AMI differential signals outputs
connected to the appropriate transformer.
The S interface access sub-function is clock-
feeded by a 15.36MHz clock signal from the
on-chip oscillator.
I431 recommendation protocols are fully imple-
mented.
The activation / deactivation command manage-
ment is done by the device.
5.1 - ISDN S Interface Synoptic
See Figure 3.
6 - USB ACCESS
The device is directly connected to the USB bus.
4 pins are dedicated to this access:
DP, DM for data exchange. VBUS, GNDBUS as
power lines.
The data transfer rate is 12 MBits. The clock is
extracted from the differential lines DP, DM by a
digital PLL from a 48MHz internal clock. This
48MHz clock is created from the 15.36MHz clock.
The USB protocol is fully implemented following
the 1.0 USB specification.
6.1 - USB Normalization
This specification refers to USB normalization
documents:
– Universal Serial Bus Specification revision 1.0
– Universal Serial Bus Common Class Specifica-
tion revision 1.0
– ST5481 belongs to the VENDOR SPECIFIC
DEVICE CLASS and to a vendor specific
subclass defined as ISDN MODEM DEVICE
SUBCLASS.
It presents ONE INTERFACE belonging to the
VENDOR SPECIFIC INTERFACE CLASS and a
vendor specific interface subclass defined as
ISDN SOFT MODEM INTERFACE SUBCLASS.
It satisfies to a vendor specific control protocol
called ISDN SOFT MODEM PROTOCOL.
Figure 3 :
S-Interface Block Diagram
Line Signal
Detector
Rx
Slicers
RXNUM
CONTROL
TXNUM
- Tx multiframe control
- D channel monitoring
- Loopbacks
- Frame construction
- AMI code generation
- C/I control
- Activation state machine
- Master clocks generation
- D & E channel processing
- Auto threshold controller
- Auto equalizer controller
- Digital PLL, line synchronization
- AMI decoder
- Frame synchronization & polarity check
- Signal ID
- Multiframe control.
Pre Filter &
equalizer
2x6 bits DACs
Line
Driver
相关PDF资料 |
PDF描述 |
|---|---|
| ST5x86 | 100 and 120 MHz 3.45 Volt 5x86 CPU(微处理器) |
| ST62 SERIES | 8-Bit OTP/EPROM MCUs with A/D Converter, Oscilator Safeguard, Safe Reset and 20 Pins(8位OTP/EPROM微控制器(8M)) |
| ST6200LB1 | LOW VOLTAGE 8-BIT ROM MCUs WITH A/D CONVERTER,AND 16 PINS |
| ST6200LM1 | LOW VOLTAGE 8-BIT ROM MCUs WITH A/D CONVERTER,AND 16 PINS |
| ST6201LM1 | LOW VOLTAGE 8-BIT ROM MCUs WITH A/D CONVERTER,AND 16 PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ST5-48B31 | 功能描述:电源变压器 SPLIT BOBBIN HORZ MOUNT XFMR RoHS:否 制造商:Triad Magnetics 功率额定值:12 VA 初级电压额定值:115 V / 230 V 次级电压额定值:12 V / 24 V 安装风格:SMD/SMT 一次绕组:Dual Primary Winding 二次绕组:Dual Secondary Winding 长度:2.5 in 宽度:2 in 高度:1.062 in |
| ST-550 | 功能描述:剥线和切削工具 18-28AWG ADJST STRPR RoHS:否 制造商:Molex 产品:Cable Strippers 类型: 描述/功能:Stripper |
| ST-5500 | 制造商:Distributed By MCM 功能描述:Insulation Tester |
| ST-5502 | 制造商:Pro'skit 功能描述:Universal Tool Belt |
| ST550-3 | 制造商:Ferraz Shawmut 功能描述: |
发布紧急采购，3分钟左右您将得到回复。