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參數資料
| 型號： | XRT84V24 |
| 廠商： | Exar Corporation |
| 元件分類： | 通信及網絡 |
| 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： | 1/6頁 |
| 文件大小： | 82K |
| 代理商： | XRT84V24 |
QUAD E1 FRAMER IC
XRT84V24
PRELIMINARY
REV. 1.0.1
1
GENERAL DESCRIPTION
The XRT84V24 Quad E1 Framer IC contains four in-
dependent E1 Framer blocks. Each E1 Framer block
contains its own Transmit and Receive E1 Framin
function, Transmit HDLC Controller (which encapsu-
lates contents of Transmit HDLC Buffers into LAPD
Message frames) and Receiver HDLC Controller
(which extracts payload content of “Receive LAPD
Message” frames from the incoming E1 data stream
and writes it into the Receive HDLC Buffer). Each
framer also contains a Transmit and Overhead Input
port, which permits “Data Link” Terminal equipment
direct access to the outbound E1 frames and a Re-
ceive Overhead Output port, which permits “Data
Link” Terminal equipment direct access to the “Data
Link” bits within the inbound E1 frames.
FEATURES
Four independent, ITU-T G.704 compliant Trans-
ceiver E1 Framers
Supports Channel Associated Signalin
Supports Common-Channel and Primary Rate
ISDN Signalin
Supports FAS, CRC-Multiframe and CAS Multi-
frame framing stuctures
Contains two 96 byte Transmit HDLC Buffers and
two 96 byte Receive HDLC buffers for each channel
Contains Microprocessor Interface for popular
types of Microprocessors and supports Pro-
grammed I/O, Burst and DMA modes of Read/Write
access
Each framer block can encode or decode the E
Frame data into/from the Single-Rail or Dual-Rail
(AMI or HDB3 encoded) formats
Detects and forces RAI and AIS Alarms
Detects LOF, COFA and LOS conditions
Each Framer Contains a 512 bit Elastic Store Buffer
Uses a Single +3.3V Power Supply
Available in either a 160 pin PQFP and 208 pin
PQFP package
APPLICATIONS
SDH terminal or add/drop multiplexers supporting
E1 framing
E1 multiplexers
Channel Service Units (CSUs)
LAN routers with integrated E1 interfaces
E1 Frame Relay Interface
ISDN Primary Rate Interfaces
Test Equipment
F
IGURE
1. B
LOCK
D
IAGRAM
OF
THE
XRT84V24
TxPOS_0
TxNEG_0
TxLineClk_0
RxPOS_0
RxNEG_0
RxLineClk_0
Microprosser
Interface Block
PCS_L
PWR_L
PRD_L
PD[7:0]
PA[5:0]
RxSER_0
RxSERClk_0
RxOH_0
RxOHClk_0
TxOH_0
TxOHClk_0
TxSER_0
TxSERClk_0
Framer Block 1
Framer Block 2
Framer Block 3
Transmit E1
LIU Interface
Transmit E1
Framer
Receive E1
Framer
HDLC
Controller
Transmit E1
Overhead Input
Interface
Transmit E1
Serial Input
Interface
TxLAPD
Buffer
Rx LAPD
Buffer
Receive E1
Serial Output
Interface
Receive E1
Overhead Output
Interface
Framer Block 0
LIU
Controller
Block
GPO_6_CS_L_3
GPO_5_CS_L_2
GPO_4_CS_L_1
GPO_3_CS_L_0
GPO_2_SClK_L
GPO_1_SDI
GPO_0_SDO
Receive E1
LIU Interface
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PDF描述 |
|---|---|
| XRT86L30 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
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| XRT86SH221 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH221IB | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| XRT86SH328 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關代理商/技術參數 |
參數描述 |
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| XRT85L61ES | 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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| XRT85L61IG-F | 功能描述:時鐘合成器/抖動清除器 BITS -.5V-6V temp -45 to 85C RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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