參數(shù)資料
型號: XRT4500CV
廠商: EXAR CORP
元件分類: 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
文件頁數(shù): 28/99頁
文件大?。?/td> 1384K
代理商: XRT4500CV
á
XRT4500
MULTIPROTOCOL SERIAL NETWORK INTERFACE IC
REV. 1.0.7
25
PIN DESCRIPTIONS
PIN
#
Signal
DTE
MODE
DCE
MODE
TYPE
FUNCTION
78
RX1A
RXDA
TXDA
I
Receiver 1 – Negative Data Differential Input from Line
79
RX1B
RXDB
TXDB
I
Receiver 1
Positive Data Differential Input from Line
The exact function of this input pin depends upon whether the
XRT4500 is operating in the DCE or DTE Mode. This input pin,
along with “RX1A” (pin 78) will accept a line signal in either the
V.35, V.11, V.28/EIA-232 or V.10 electrical format. Receiver 1 will
then convert this line signal into a CMOS level binary data
stream, and will output this data (to the Terminal Equipment) via
the “RX1D” output pin (pin 1).
DCE Mode – Receive Data (RXD) – Negative Polarity Input
Line Signal
80
EN_TERM
I
Enable Input Termination
for Receiver 1, 2, 3, in V.11 Mode.
Internal 20k
pull-down to ground.
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