please anwer this question Q 1. a) An interfacing diagram of 8251A with 8086 system is shown below. An important block is hiddenin the diagram which helps the 8251A interconnection with RS-232 cable. What is the name of thathidden block which is unlabeled in diagram and what is the role of that block in serial communication?D.-DsLatchesA, - A,and8086CPUBusBuffersA,D, - D,DSRTTLSerial BusM/TO WR RDТxDRD RDRxDWR- WRRTSA,IOCS - 08251ACTSIOCS - 1A.BA,DTRRXRDYCSIOCS - 28284ClockGeneratorIOCS - 3IOCS - 4IOCS - 5IOCS - 6IOCS - 7TXRDYA,TХEMPTY???SYNDET/BRKDETM/IOPCLK+5-VG,RS-232Serial BusClock DividerTterClock Divider9-pin D-typeConnectorb) Observe the timing diagrams given in Fig. A and Fig. B below and identify the mode of operationwhen these kind of waveforms are produced on the OUT pin of the IC. Also, name the IC and explainthe mode during which the following output waveforms were produced.CLKREADYRESET3-to-8 DecoderRESETCLKD, - D,

8251 is a USART (Universal Synchronous Asynchronous Receiver Transmitter) for serial data…

Q1. a) 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, - D, Latches and Buffers A, - A, 8086 CPU Bus D, - D, C/D DSR TTL Serial Bus M/TO WR RD TXD RD RD RxD WR WR RTS A, A A, B A, IOCS - 0 IOCS 1 IOCS - 2 8251A CTS CS DTR RXRDY 8284 Clock JOCS-3 IÓCS - 4 IOCS - 5 IOCS - 6 IOCS - 7 TXRDY A, ТХЕMPTY ??? Generator SYNDET/ BRKDET M/TO PCLK +5-V G, RS-232 Serial Bus Clock Divider Clock Divider 9-pin D-type Connector CLK READY RESET 3-to-8 Decoder RESET CLK TxC D. -D RxC

Q1. a) 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, - D, Latches and Buffers A, - A, 8086 CPU Bus D, - D, C/D DSR TTL Serial Bus M/TO WR RD TXD RD RD RxD WR WR RTS A, A A, B A, IOCS - 0 IOCS 1 IOCS - 2 8251A CTS CS DTR RXRDY 8284 Clock JOCS-3 IÓCS - 4 IOCS - 5 IOCS - 6 IOCS - 7 TXRDY A, ТХЕMPTY ??? Generator SYNDET/ BRKDET M/TO PCLK +5-V G, RS-232 Serial Bus Clock Divider Clock Divider 9-pin D-type Connector CLK READY RESET 3-to-8 Decoder RESET CLK TxC D. -D RxC

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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