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SAB82538 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 SAB82538
기능 Enhanced Serial Communication Controller
제조업체 Siemens
로고 Siemens 로고 



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SAB82538 데이터시트, 핀배열, 회로
ICs for Communications
Enhanced Serial Communication Controller with 8 Channels
ESCC8
SAB 82538
SAF 82538
Version 2.2
User’s Manual 03.95




SAB82538 pdf, 반도체, 판매, 대치품
General Information
Table of Contents
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1 General Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
1.1 Pin Definitions and Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
1.2 Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
1.3 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
1.4 System Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.4.1 General Aspects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1.4.2 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
1.4.2.1 ESCC8 with SAB 80188 Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
1.4.2.2 ESCC8 with 80386 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
1.4.2.3 ESCC8 with MC 68020, 68030 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
1.4.2.4 Interrupt Cascading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
2.2 Microprocessor Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
2.2.1 Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
2.2.2 Data Transfer Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
2.2.3 Interrupt Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
2.2.3.1 Priority Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
2.2.3.2 Interrupt Polling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
2.2.3.3 Vectored Interrupt Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
2.2.4 DMA Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
2.2.5 FIFO Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
2.3 HDLC/SDLC Serial Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
2.3.1 Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
2.3.2 Procedural Support (Layer-2 Functions) . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
2.3.2.1 Full-Duplex LAPB/LAPD Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
2.3.2.2 Half-Duplex SDLC-NRM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
2.3.2.3 Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
2.3.3 SDLC Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
2.3.4 Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
2.3.4.1 Shared Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
2.3.4.2 Preamble Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
2.3.4.3 CRC-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
2.3.4.4 Extended Transparent Transmission and Reception . . . . . . . . . . . . . . . . . . .69
2.3.4.5 Cyclic Transmission (Fully Transparent) . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
2.3.4.6 Continuous Transmission (DMA Mode only) . . . . . . . . . . . . . . . . . . . . . . . . .70
2.3.4.7 Receive Length Check Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
2.3.4.8 One Bit Insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
2.3.4.9 CRC ON/OFF Feature (version 2 upward) . . . . . . . . . . . . . . . . . . . . . . . . . .71
Semiconductor Group
4

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SAB82538 전자부품, 판매, 대치품
General Information
Introduction
The Enhanced Serial Communication Controller ESCC8 (SAB 82538) is a data
communication device with eight serial channels. It has been designed to implement
high-speed communication links and to reduce hardware and software overhead
needed for serial synchronous/asynchronous communications.
Each channel contains an independent clock generator, DPLL, encoder/decoder and a
programmable protocol part. Data communication with asynchronous, synchronous
character oriented, and HDLC based protocols with extended support of X.25 “0”, the
ISDN “0”, and SDLC protocols is implemented. Like the dual channel ESCC2
(SAB 82532) the ESCC8 is capable of handling a large set of layer-2 protocol functions
independently of the host processor.
The version 82538H-10 of the Enhanced Serial Communication Controller (ESCC8)
opens a wide area for applications which use time division multiplex methods (e.g. time-
slot oriented PCM systems, systems designed for packet switching, ISDN applications)
by its programmable telecom-specific features. Specifically in one of its timing modes
(clock mode 5), which is applicable to all serial modes (HDLC/SDLC, ASYNC, BISYNC),
the ESCC8 can transmit or receive data packets in one of up to 64 time-slots of
programmable width.
The device is controlled via a parallel 16-bit wide interface which is directly compatible
with the most popular 8/16 bit microprocessors (Siemens/Intel or Motorola type). The
internal FIFOs (64 bytes per direction and channel) with additional DMA capability
provide a powerful interface to the higher layers implemented in a microcontroller. For
interrupt controlled systems, the ESCC8 supports daisy chaining and interrupt vector
generation.
The ESCC8 is fabricated using Siemens advanced CMOS technology and is available
in a P-MQFP-160 package.
Applications
q Universal, multiprotocol communication boards
q Asynchronous and synchronous terminal cluster controllers
q LAN gateways and bridges
q Multiplexers, cross-connect points, DMI boards
q Time slotted packet networks
q Packet switches, packet assemblers/disassemblers
Semiconductor Group
7

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휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

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링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
SAB82532

Enhanced Serial Communication Controller

SIEMENS
SIEMENS
SAB82538

Enhanced Serial Communication Controller

Siemens
Siemens

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