參數(shù)資料
型號(hào)： XRT4500CV
廠商： EXAR CORP
元件分類(lèi)： 通信及網(wǎng)絡(luò)
英文描述： MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP80
封裝： 14 X 14 MM, 1.40 MM HEIGHT, TQFP-80
文件頁(yè)數(shù)： 24/99頁(yè)
文件大小： 1384K
代理商： XRT4500CV
á
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
21
PIN DESCRIPTIONS (CONT.)
PIN
#
Signal
DTE
MODE
DCE
MODE
TYPE
FUNCTION
64
TX2A
SCTEA
RXCA
O
Transmitter 2 – Negative 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) – Negative 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: 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 format
then this pin outputs the ‘Negative Polarity’ portion of the ‘SCTE’
data to the line. If this data is being converted into the V.10 or V.28
electrical format, tthen this pin outputs this data to the line in a
single-ended manner.
DCE Mode Receive Clock (RXC) Signal – Negative 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 ‘Negative 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 pin outputs this data to the line
in a single-ended manner.
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