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參數(shù)資料
| 型號： | XRT4500 |
| 廠商： | Exar Corporation |
| 英文描述： | MULTIPROTOCOL SERIAL NETWORK INTERFACE IC |
| 中文描述： | 多協(xié)議串行網(wǎng)絡接口芯片 |
| 文件頁數(shù)： | 48/99頁 |
| 文件大?。?/td> | 1384K |
| 代理商： | XRT4500 |
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á
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
45
1.3.2
The XRT4500 is capable of supporting either the
"DCE" or "DTE" Modes of operation. Setting this in-
put pin "high" configures the XRT4500 to operate in
the "DCE" Mode. Conversely, setting this input pin
DCE/
DTE
- The DCE/
DTE
Mode Select Pin
"low" configures the XRT4500 to operate in the "DTE"
Mode. A brief description of DCE Mode and DTE
Mode operations are listed below.
Figure 16 presents a very simple illustration of a DCE
Terminal being interfaced to a DTE Terminal. From
this figure, one can make the following observations
about the DCE and DTE Terminals.
The DCE Terminal
The DCE Terminal is responsible for sourcing/gener-
ating all of the following signals.
RXD - Receive Data (High Speed Signal)
RXC - Receive Clock (High Speed Signal)
TXC - Transmit Clock (High Speed Signal)
DSR - Data Set Ready
DCD - Data Carrier Detect
CTS - Clear to Send
RI (Ring Indicator) or
TM (Test Mode).
Further, the DCE Terminal is responsible for receiving/
terminating all of the following signals.
TXD - Transmit Data (High Speed Signal)
TXCE (or SCTE) - Transmit Clock Echo (High
Speed Signal)
DTR - Data Terminal Ready
RTS - Request to Send
LL - Local Loop-back Indicator
RL - Remote Loop-back Indicator
Because of this, whenever the XRT4500 is configured
to operate in the “DCE” Mode, then the following con-
figuration conditions are “TRUE”.
Three “high-speed” Transmitters are enabled, and
Two “high-speed” Receivers are enabled.
Four “l(fā)ow-speed” Transmitters are enabled, and
Four “l(fā)ow-speed” Receivers are enabled.
F
IGURE
16. A S
IMPLE
I
LLUSTRATION
OF
THE
DCE/DTE I
NTERFACE
TXD
RXD
TXC
RXC
TXCE
DTR
DSR
DCD
CTS
RTS
LL
RL
RI (or TM)
DTE
EQUIPMENT
DCE
EQUIPMENT
XRT4500
XRT4500
相關PDF資料 |
PDF描述 |
|---|---|
| XRT4500CV | MULTIPROTOCOL SERIAL NETWORK INTERFACE IC |
| XRT56L85 | Low Power PCM Line Interface |
| XRT5794ES | Evaluation System |
| XRT5894ES | () |
| XRT5894 | Four-Channel E1 Line Interface (3.3V or 5.0V)(四通道E1 3.3V線接口單元) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT4500CV | 制造商:EXAR 制造商全稱:EXAR 功能描述:MULTIPROTOCOL SERIAL NETWORK INTERFACE IC |
| XR-T5600P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Repeater |
| XR-T56188CD | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
| XR-T56188CP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
| XR-T56188ID | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
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