參數(shù)資料
型號: XRT86VL3x
廠商: Exar Corporation
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 27/153頁
文件大小: 1316K
代理商: XRT86VL3X
XRT86VL3X
20
REV. 1.2.2
T1/E1/J1 FRAMER/LIU COMBO - ARCHITECTURE DESCRIPTION
3.0
HDLC CONTROLLERS AND LAPD MESSAGES
The purpose of the HDLC controllers is to allow messages to be stored for transport in the outbound transmit
framer block or extracted from the receive framer block through the LAPD interface. Each channel within the
Framer has 3 independent HDLC controllers. Each HDLC controller has two 96-Byte buffers for Transmit and
two 96-Byte buffers for Receive. The buffers are used to insert messages into the out going data stream for
Transmit or to extract messages from the incoming data stream from the Receive path. Total, there are twelve
96-Byte buffers per channel. This allows multiple HDLC messages to be transported to and from EXAR’s
framing device.
F
IGURE
28. HDLC C
ONTROLLERS
Buffer 0
Buffer 1
Transmit
Receive
96-Bytes
96-Bytes
96-Bytes
96-Bytes
Transmit
Receive
96-Bytes
96-Bytes
96-Bytes
96-Bytes
Transmit
Receive
96-Bytes
96-Bytes
96-Bytes
96-Bytes
HDLC1
HDLC2
HDLC3
Buffer 0
Buffer 1
Buffer 0
Buffer 1
Channel N
相關(guān)PDF資料
PDF描述
XRT86VL3X_07 Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
XRT86VL3X Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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XRT91L30IQ STS-12/STM-4 OR STS-3/STM-1 SONET/SDH TRANSCEIVER
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