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參數(shù)資料
| 型號： | XRT79L73 |
| 廠商： | Exar Corporation |
| 英文描述： | 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| 中文描述： | 3 -通道DS3/E3自動柜員機(jī)用戶到網(wǎng)絡(luò)接口/ Combo IC對購買力平價 |
| 文件頁數(shù)： | 34/71頁 |
| 文件大小： | 495K |
| 代理商： | XRT79L73 |
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XRT79L73
REV. P1.0.0
PRELIMINARY
3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
t
32
N2
J25
R5
RxPFrame1/
RxOHInd1
RxPFrame2/
RxOHInd2
RxPFrame3/
RxOHInd3
O
O
O
Receive PLCP Frame Indicator/Receive Overhead Indicator Output:
The function of these output pins depend upon whether the XRT79L73 has
been configured to operate in the ATM/PLCP, the Clear-Channel Framer/Serial
or the Clear-Channel Framer/Nibble-Parallel Modes.
ATM/PLCP Mode - RxPFrame:
These output pins pulse "High" when the Receive PLCP Processor is receiving
the last bit of a PLCP frame.
N
OTE
:
These output pins are inactive if the XRT79L73 is configured to operate
in the Direct-Mapped ATM Mode.
Clear-Channel Framer/Serial Mode - RxOHInd:
These output pins pulse "High" for one bit-period whenever an overhead bit is
being output via the RxSer output pin, by the Receive Payload Data Output
Interface block.
N
OTE
:
If the user configures the XRT79L73 to operate in the Gapped-Clock
Mode, then these output pins will provide a demand clock to the local
terminal equipment. In the Gapped-Clock Mode, these output pins will
only provide a clock pulse, whenever a payload bit is being output via
the RxSer output pin. These output pins will NOT generate a clock
pulse, whenever an overhead is being output via the RxSer output pin.
Clear-Channel Framer/Nibble-Parallel - RxOHInd:
These output pins pulse "High" for one nibble-period whenever an overhead
nibble is being output via the RxNibn[3:0] output pins by the Receive Payload
Data Output Interface block.
N
OTE
:
1.If the XRT79L73 device has been configured to operate in both the
DS3 and the Nibble-Parallel" Modes, then the RxOHInd output pin will
be in-active and will pulled "LOW" at all times.
N
OTE
:
2.If the XRT79L73 device has been configured to operate in both the E3
and the Nibble-Parallel" Mode, then the RxOHInd output pin will be
active and will pulse "high" to denote overhead nibbles.
N
OTE
:
3.The purpose of this output pin is to alert the System-Side terminal
equipment that an
P
IN
#
N
AME
TYPE
D
ESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT79L73IB | 3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74 | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74IB | 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000ID | Clock Synchronizer/Adapter for Communications |
| XRT8000 | Clock Synchronizer/Adapter for Communications(用于通訊的時鐘同步設(shè)備/調(diào)整器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT79L73IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:3 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74 | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT79L74IB | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC |
| XRT8000 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
| XRT8000_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:Clock Synchronizer/Adapter for Communications |
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