Electronic Components Datasheet Search |
|
XRT72L56 Datasheet(PDF) 1 Page - Exar Corporation |
|
XRT72L56 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 486 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com áç áç áç áç PRELIMINARY XRT72L56 SIX CHANNEL DS3/E3 FRAMER IC WITH HDLC CONTROLLER JANUARY 2001 REV. P1.1.2 GENERAL DESCRIPTION The XRT72L56, 6 Channel DS3/E3 Framer is de- signed to accept “User Data” from the Terminal Equipment and insert this data into the “payload” bit- fields within an “outbound” DS3/E3 Data Stream. The XRT72L56 DS3/E3 Framer support full-duplex data flow between Terminal Equipment and an LIU (Line Interface Unit) . The Framer will transmit, re- ceive and process data in the DS3-C-bit Parity, DS3- M13, E3-ITU-T G.751 and E3-ITU-T G.832 Framing Formats. In addition, XRT72L56 has 6 independent high speed HDLC controllers both on the receive and transmit data paths which can be optionally configured to sup- port Framer Relay applications. The Transmit Sections, include a Transmit Payload Data Input Interface, a Transmit Overhead data Input Interface Section, a Transmit HDLC Controller, a Transmit DS3/E3 Framer block and a Transmit LIU In- terface Block which permits the Terminal Equipment to transmit data to a remote terminal. The Receive Sections, consist of a Receive LIU Inter- face, a Receive DS3/E3 Framer, a Receive HDLC Controller, a Receive Payload Data Output Interface, and a Receive Overhead Data Interface which allows the local terminal equipment to receive data from re- mote terminal equipment. The Microprocessor Interface is used to configure the Framer in different operating modes and monitor the performance of the Framer. The Performance Monitor Sections consist of a large number of "Reset-upon-Read" and "Read-Only" reg- isters that contain cumulative and "one-second" sta- tistics that reflect the performance/status of the chan- nels. FEATURES • Transmits, Receives and Processes data in the DS3-C-bit Parity, DS3-M13, E3-ITU-T G.751 and E3-ITU-T G.832 Framing Formats. • Per Channel High Speed HDLC Controllers. • Interfaces to all Popular Microprocessors • Extensive Performance Monitoring support. • Available in a 388 Ball PBGA package • 3.3V Power Supply with 5V Tolerant I/O • Operating Temperature -40°C to +85°C APPLICATIONS • Digital Cross Connects • CSU/DSU Equipment. • ADD/Drop Multiplexers • DS3/E3 Frame Relay Equipment FIGURE 1. BLOCK DIAGRAM OF THE XRT72L56 T3/E3 Transmit Framer T3 FEAC & Data Link Controller T3/E3 Receive Framer Performance Monitor Interrupt Controller TxOHInd[n:0] TxNibFrame[n:0] TxFrame[n:0] TxNibClk[n:0] TxLnClk[n:0] TxFrameRef[n:0] TxNib[n:0] TxSer[n:0] T3/E3 transmit Input RxClk[n:0] RxOHind[n:0] RxFrame[n:0] RxNib[n:0] RxSer[n:0] RxOUTClk[n:0] T3/E3 Receive Output uP Interface Typical Channel n Where n = 0, 1, 2, 3, 4 & 5 TxLineClk[n:0] TxPOS[n:0] TxNEG[n:0] RxLineClk[n:0] RxPOS[n:0] RxNEG[n:0] ExtLOS LIU Interface/ Controller TxOHEnable TxOHClk TxOHFrame TxAISEn TxOH TxOHIns T3/E3 Transmit Overhead Interface RxOHEnable[n:0] RxOHClk[n:0] RxOH[n:0] RxRed[n:0] RxOHFrame[n:0] RxOOF[n:0] T3/E3 Receive Overhead Interface HDLC controller HDLC controller Reset TestMode NibbleLnTF A(11:0) D(7:0) ALE_AS WR_R/W CS RDY_DTCK Reset INT MOTO RD_DS |
Similar Part No. - XRT72L56 |
|
Similar Description - XRT72L56 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |