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An interfacing diagram of 8251A with 8086 system is shown below. An important block is hidden in the diagram which helps the 8251A interconnection with RS-232 cable. What is the name of that hidden block which is unlabeled in diagram and what is the role of that block in serial communication?

An interfacing diagram of 8251A with 8086 system is shown below. An important block is hidden in the diagram which helps the 8251A interconnection with RS-232 cable. What is the name of that hidden block which is unlabeled in diagram and what is the role of that block in serial communication?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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An interfacing diagram of 8251A with 8086 system is shown below. An important block is hidden
in the diagram which helps the 8251A interconnection with RS-232 cable. What is the name of that
hidden block which is unlabeled in diagram and what is the role of that block in serial communication?

D, - D5 Latches A, - A19 and 8086 CPU Buffers A 8. Bus D, - D, C/D A DSR TTL M/IO WR RD TxD Serial Bus RD RD RxD WR WR RTS A, A A, B A, IOCS - 0 IOCS - 1 8251A СTS CS DTR IOCS - 2 RXRDY 8284 Clock IOCS - 3 TXRDY А, GA ??? Generator IOCS - 4 ТXЕMPTY IOCS - 5 SYNDET/ BRKDET IOCS - 6 MIO G IOCS - 7 PCLK +5-V G, RS-232 Serial Bus Clock Divider Clock Divider 9-pin D-type Connector CLK READY RESET Jəpoɔəg 8-01- RESET CLK TxC D,-D, RxC
Transcribed Image Text:D, - D5 Latches A, - A19 and 8086 CPU Buffers A 8. Bus D, - D, C/D A DSR TTL M/IO WR RD TxD Serial Bus RD RD RxD WR WR RTS A, A A, B A, IOCS - 0 IOCS - 1 8251A СTS CS DTR IOCS - 2 RXRDY 8284 Clock IOCS - 3 TXRDY А, GA ??? Generator IOCS - 4 ТXЕMPTY IOCS - 5 SYNDET/ BRKDET IOCS - 6 MIO G IOCS - 7 PCLK +5-V G, RS-232 Serial Bus Clock Divider Clock Divider 9-pin D-type Connector CLK READY RESET Jəpoɔəg 8-01- RESET CLK TxC D,-D, RxC
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