- 您现在的位置：买卖IC网 > PDF目录69340 > SCD223110QCD (INTEL CORP) 2 CHANNEL(S), 256K bps, SERIAL COMM CONTROLLER, PQFP100 PDF资料下载
参数资料
| 型号： | SCD223110QCD |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 2 CHANNEL(S), 256K bps, SERIAL COMM CONTROLLER, PQFP100 |
| 封装： | METRIC, QFP-100 |
| 文件页数： | 1/178页 |
| 文件大小： | 2247K |
| 代理商： | SCD223110QCD |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页第159页第160页第161页第162页第163页第164页第165页第166页第167页第168页第169页第170页第171页第172页第173页第174页第175页第176页第177页第178页
CD2231
Intelligent Two-Channel LAN and WAN Communications Controller
Datasheet
The CD2231 is a two-channel multi-protocol synchronous/asynchronous communications
controller specifically designed to reduce host-system processing overhead and increase
efficiency in a wide variety of communications applications. The CD2231 is packaged in a 100-
pin MQFP, and offers eight clock/modem pins per channel. The device has two fully
independent serial channels that support asynchronous, asynchronous-HDLC (PPP),
synchronous HDLC/SDLC, SLIP, and MNP 4 protocols at serial data rates up to 256 kbps,
(230.4 kbps in async modes) when clocked by a 35-MHz source.
The device is based on a proprietary on-chip RISC processor that performs all time-critical, low-
level tasks that are otherwise performed by the host system.
The CD2231 boosts system efficiency with on-chip DMA, on-chip FIFOs, intelligent vectored
interrupts, and intelligent protocol processing. The on-chip DMA controller provides ‘fire-and-
forget’ transmit support — the host need only inform the CCD2231 of the location of the packet
to be sent. Similarly, on receive, the CD2231 automatically receives a complete packet with no
host intervention or assistance required. The DMA controller also has an ‘Append mode’ for use
in asynchronous applications.
The DMA controller uses a dual-buffer scheme that easily implements simple or complex buffer
schemes. Each channel and direction has two active buffers.
The CD2231 can be programmed to interrupt the host at the completion of a frame or buffer. In
applications where buffers are of a small, fixed size, the dual-buffer scheme allows large frames
to be divided into multiple buffers.
For applications where a DMA interface is not desired, the device can be operated as an
interrupt-driven or polled device. This choice is available individually for each channel and each
direction. For example, a channel can be programmed for DMA transmit and interrupt-driven
receive.
In either case, 16-byte FIFOs on each channel and in each direction reduce latency time
requirements, making both software and hardware designs less time-critical. Threshold levels on
FIFOs are user-programmable.
Efficient vectored interrupts are another way the CD2231 helps system efficiency. Separate
interrupts are generated for transmit, receive, and modem-signal change with unique user-
defined vectors for each type and channel. This allows very flexible interfacing and fast,
efficient interrupt coding.
As of May 2001, this document replaces the Basis
Communications Corp. document
May 2001
CL-CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller.
相关PDF资料 |
PDF描述 |
|---|---|
| SCDV5540 | 5X5 DOT MATRIX DISPLAY, RED, 3.2 mm |
| SCDV5541 | 5X5 DOT MATRIX DISPLAY, YELLOW, 3.2 mm |
| SCDV5543 | 5X5 DOT MATRIX DISPLAY, GREEN, 3.2 mm |
| SCF5249LAG120 | 32-BIT, 120 MHz, RISC PROCESSOR, PQFP144 |
| SCF5250CAG120 | 32-BIT, 120 MHz, MICROPROCESSOR, PQFP144 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SCD224K122A324F | 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR |
| SCD224K122A3Z25 | 制造商:Cornell Dubilier Electronics 功能描述:Cap Film 0.22uF 1200V PP 10% (46.99 X 24.6 X 24.1mm) Screw Mount |
| SCD224K122A3Z25-F | 功能描述:薄膜电容器 1200Vdc .22uF 580Vac RoHS:否 制造商:Cornell Dubilier 产品类型: 电介质:Polyester 电容:0.047 uF 容差:10 % 电压额定值:100 V 系列:225P 工作温度范围:- 55 C to + 85 C 端接类型:Radial 引线间隔:9.5 mm |
| SCD224K162A3-24 | 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR |
| SCD224K162A324F | 制造商:Cornell Dubilier Electronics 功能描述:FILM CAPACITOR |
发布紧急采购，3分钟左右您将得到回复。