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(luò)接口芯片
文件頁數(shù)： 25/99頁
文件大?。?/td> 1384K
代理商： XRT4500
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
á
22
65
TX2B
SCTEB
RXCB
O
Transmitter 2 –
Positive Data Differential Output to line.
The exact function of this output pin depends upon whether the
XRT4500 is operating in the DCE or DTE Mode.
DTE Mode Transmit Clock Echo (SCTE) – Positive Polarity
Output Signal
Transmitter 2 accepts a TTL level binary data system (as the
‘Transmit Clock Echo’ – SCTE) from the DTE terminal equip-
ment. Transmitter 2 converts this digital data into any of the fol-
lowing electrical formats: V10, V.11, V.28 or V.35 prior to
transmission to the line.
If this data is being converted into the V.11 or V.35 electrical format
then this pin outputs the ‘Positive Polarity’ portion of the ‘SCTE’
data to the line. If this data is being converted into the V.10 or V.28
electrical format, then this output pin is in-active.
DCE Mode Receive Clock (RXC) Signal – Positive Polarity
Output Line Signal
Transmitter 2 accepts a TTL level binary data system (as the
‘Receive Clock - RXC) from the DCE terminal equipment. Trans-
mitter 2 converts this digital data into any of the following electrical
formats: V.10, V.11, V.28 or V.35 prior to transmission to the line.
If this data is being converted into the V.11 or V.35 electrical for-
mat then this pin outputs the ‘Positive Polarity’ portion of the
‘RXC’ data to the line. If this data is being converted into the V.10
or V.28 electrical format, then this output pin is in-active.
66
CM_TX2
O
Transmitter 2 Output Termination Center Tap in V.35 Mode
–
This pin should be by-passed to ground with an external 0.1μF
capacitor.
PIN
#
Signal
DTE
MODE
DCE
MODE
TYPE
FUNCTION
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