KR960043641A

KR960043641A - Improved ATM terminal card

Info

Publication number: KR960043641A
Application number: KR1019950012407A
Authority: KR
Inventors: 윤성욱
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-05-18
Filing date: 1995-05-18
Publication date: 1996-12-23

Abstract

본 발명은 개선된 ATM 단말카드에 관한 것으로, 호스트 CPU(21)와, 호스트 메모리(22), 버스 제어기(23)가 에스버스(24)상에 공통 접속되어 있고, 상기 에스버스(24)를 통해 호스트 메모리(22)로부터 데이타를 읽어와 ATM셀을 형성하며 전송할 데이타가 없으면 아이들 셀(Idle Cell)을 발생시키는 AAL 프로세서(31)와; 호스트로부터 전송할 데이타가 있으면 상기 AAL 프로세서(31) 의 출력을 선택하고, 상기 AAL 프로세서(31)의 아이들 셀 타이밍에는 외부단자(32)에서 입력되는 데이타를 선택하는 외부입력 인터페이스부(33); 상기 외부입력 인터페이스부(33)의 출력을 광신호로 변환하여 광선로(7)를 통해 출력하는 트랜시버(34)로 구성되어 별도의 복잡한 회로를 부가하지 않고서도, 아이들 셀 타이밍에 외부 데이타를 입력하여 전송할 수 있으므로 외부와 쉽게 인터페이스할 수 있다.The present invention relates to an improved ATM terminal card, wherein a host CPU (21), a host memory (22), and a bus controller (23) are commonly connected on an bus bus (24), and the bus bus (24) is connected. An AAL processor 31 which reads data from the host memory 22 to form an ATM cell and generates an idle cell if there is no data to transmit; An external input interface unit 33 for selecting an output of the AAL processor 31 when there is data to be transmitted from a host, and selecting data input from an external terminal 32 at an idle cell timing of the AAL processor 31; Transceiver 34 which converts the output of the external input interface unit 33 into an optical signal and outputs it through the optical path 7 to input external data at idle cell timing without adding a complicated circuit. Can be interfaced with external devices.

Description

Improved ATM terminal card

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 개선된 ATM 단말카드를 도시한 블럭도, 제6도는 본 발명에 사용되는 아이들 셀의 포맷을 도시한 도면이다.3 is a block diagram showing an improved ATM terminal card according to the present invention, and FIG. 6 is a diagram showing the format of an idle cell used in the present invention.

Claims

In the bus system in which the host CPU 21, the host memory 22, the bus controller 23, and the ATM terminal card 30 are commonly connected on the bus 24, the ATM terminal card 30 is An AAL processor (31) which reads data from the host memory (22) via the bus (24) to form an ATM cell, and generates an idle cell if there is no data to transmit; An external input interface unit 33 for selecting an output of the AAL processor 31 when there is data to be transmitted from a host, and selecting data input from an external terminal 32 at an idle cell timing of the AAL processor 31; And a transceiver (34) for converting the output of the external input interface unit (33) into an optical signal and outputting the light through the optical path (7).

The external input interface unit (33) according to claim 1, further comprising: a delay (61) for delaying a predetermined clock delay of data input from the AAL processor (31); A comparator (62) for comparing the output of the delay unit (61) with a predetermined idle cell header according to a delayed cell start (SOC) signal; And a multiplexer (63) for selecting the output or external input of the delay (61) in accordance with the output of the comparator (62).

※ Note: The disclosure is based on the initial application.