. 1.
. 2. 580.
580 .
. | |||
18 24 28 38 42 B51 53 55 57 59 75 79 80 82 83 86 87 91 92 93 72 43 42 | 41 . -//- 16 - . . ----//------- 8- -//- --//-- (.) ( ) - - - 16 | 8251 8255 8080 8291 8272 | 2123.40-2 238.16-2 2121.28-4 -//- 2121.28-5 2120.24-3 2123.40-2 2123.40-2 2121.28-5 2123.40-2 2123.40-2 2123.40-2 2140.20-1 2140.20-1 2140.20-1 2123.40-2 2121.28-10 |
Intel 8080/8085 .
, 4 PIO:
) i8155 - 3 , 256 , 14- ;
) i8255 - 3 ;
) i8355 - 2 , 2 ;
) i8755 - 2 , 2 .
i8231 - (+,-,*,/, . log );
i8232 - (32 64 );
i8202 - ;
i8253 - -;
i8048 - , , 64 , 1 ;
i8035 - , , 64 , ;
i8748 - , , 64 , 3 1 ;
i8049 - , , 128 , 2 ;
i8022 - , , 64, 1, ;
i8051 - , , 64 , 4 .
, Intel
Microprocessor peripherals
8202A - Dynamic RAM Controller
8203 - 64Ê Dynamic RAM Controller
8206 - Error Detection and Correction Unit
8207 - Advanced Dynamic RAM Controller
8231 - Arithmetic Processing Unit
8232 - Floating Point Processing Unit
|
|
8251A - Programmable interval Timer
8254 - Programmable interval Timer (8253/8253-5)
8255A/8255-5 - Programmable Peripheral interface
8256 - Multifunction Universal Asynchronous Receiver-Transmitter
8271/8271-6 - Programmable Floppy Disk Controller
8272A - Single/Double Density Floppy Disk Controller
8273, 8273-4, 8273-8 - Programmable HDLC/SDLC Protocol Controller
8274 - Multi-Protocol Serial Controller (MPSC)
8275H - Programmable CRT Controller
8276H - Smalle System CRT Controller
8279/8279-5 - Programmable Keyboard/Display interface
8291A - GPIB Talker/Listener
8292 - GIPB Controller
8293 - GIPB Transceiver
8294A - Data Encryption Unit
8295 - Dot Matrix Printer Controller
82062 - Winchester Disk Controller
82051 - Ethernet Serial interface
82586 - Local Communications Controller
82720 - Graphics Display Controller
. 3. 8080
58916(26)
. 4. 58916, 58926.
i8286(87) - 58086(87)
i8282(83) - 58082(83)
1,2
i8224 (58024)
58028(38)
( i8228/38)
()
i8255 (58055)
()
i8253 (58053)
.
. 10. . 11.
. 12. (CW ommand Word)
SC (Select Counter) -
RL (Read/Load) - /
M (Mode) -
BCD (Binary Coded Decimal) - -
. 13. 0
. 14. 1
. 15. 2
. 16. 4
. 17. 5
. 18. i8257
. 19. DMAC .
. 20. 58057
. 3 2 1 0 | D7 D6 D5 D4 D3 D2 D1 D0 | ||
0 | 0 0 0 0 0 0 0 0 | 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 | |
N-1 0 | 0 0 0 1 0 0 0 1 | 7 6 5 4 3 2 1 0 13 12 11 10 9 8 | |
1 | 0 0 1 0 0 0 1 0 | , 0 | |
N-1 1 | 0 0 1 1 0 0 1 1 | ||
2 | 0 1 0 0 0 1 0 0 | , 0 | |
N-1 2 | 0 1 0 1 0 1 0 1 | ||
3 | 0 1 1 0 0 1 1 0 | , 0 | |
N-1 3 | 0 1 1 1 0 1 1 1 |
|
|
1 0 0 0 3 - 2 1 0
( .)
1 0 0 0 0 0 0 3 2 1 0
( )
-
-
-
i - i-
-
i8237 (. .).
CLK
DREQ
HRQ
HLDA
AEN
ADSTB
DB7-DB0
A7-A0
DACK
IOR#,MEMR#
IOW#,MEMW#
INT,EOP#
EXT,EOP#
. 21. DMAC i8237
. 23. .
. 24. .
. 25. USART 8251/8251
. 26. .
# # # #
TxD TxC# CTS# TxRDY RxC# RxRDY RxD
27. PCI 8251
. 28. CI.
. 29. SW.
. 30. 51 .
. 31. .
. 32. .
. 33.
. 34. -.
. 35. RS-232
. 36. . 37.
SN75150 SN75154
. 38. 51 RS-232C
.
2
EIA(CCITT) | |||
(101) (102) (103) (104) (105) (106) (107) CF (109) CD (108/2) (125) Q (110) (111) CI (112) DA (113) DB (114) DD (115) SBB (119) SBA (118) SCA (120) S (121) SCF (122) | ( DTE) ( DE) ( DTE) ( DCE) | , , , , , , , , , , , , , , , , , , , |
|
|
. 39. 58051 :
20 mA; 40 mA.
3 DB9
( ) | ||
(Data Carrier Detect, DCD) (Received Data, RD) (Transmitted Data, TD) (Data Terminal Ready, DTR) (Signal Ground, SG) (Data Set Ready, DSR) (Request to Send, RTS) (Clear to Send, CTS) (Ring Indicator, RI) | - |
4 DB25
( ) | |||
k DCE DTE k DCE DTE DTE DTE DTE DTE kDCE DTE DTE k DCE DTE DTE DTE k DCE k DCE k DCE DTE DTE DTE k DCE DTE | FG TxD RxD RTS CTS DSR SG DCD QM SDCD SCTS STxD TxC SRxD RxC DCR SRTS DTR SQ RI DRS TC | (Frame Ground, FG) (Transmitted Data, TD) (Received Data, RD) (Request to Send, RTS) (Clear to Send, CTS) (Data Set Ready, DSR) (Signal Ground, SG) ( )(Data Carrier Detect, DCD) . (+12 , 20 ) . (-12 , 20 ) ( ) (Data Terminal Ready, DTR) ( ) () (Ring Indicator, RI) ( ) ( ) |
. 40. .
. 41. ();
RS-232 ().
|
|
5. RS-232, RS-422A, RS-423A RS-485
RS-232 | RS-422A | RS-423A | RS-485 | |
, , | ||||
, , | 0,02 | 0,10 | ||
( 1) | -3 | < | . | < |
( 0) | +3 | > | . | > |
, . , | 25 | 1 | 12 | -7-+12 |
: | ||||
, | 5 | 2 | 3,6 | 1,5 |
, | 15 | 5 | 5,4 | 5 |
, | 3 | 0,2 | 0,2 | 0,2 |
. . . , | 3-7 | |||
, , |
. 42. RS-422A RS-423A.
. 43. RS-485