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# msint: save [rO,rl,r2,r3] # movd $4,rO # addr message7,rl # movd S26,r2 # movd $0, r3 # avc # movb OxOd0001S,rO # rastore [rO,rl,r2,r3] # jump popall t #***************************** COMPARE DATA ROUTINE **************************** .# #Th1S subroutine 1s called by the rece1ver interrupt rout1ne which has set the #receiver offset (rbufoff) to point at the last byte rece1ved. This subroutine #uses the compare oftset (compoff) pOinter as the pointer for both rece1ve #buffer data and compare but fer data. Each locat10n 1s compared to ensure data #sent is identical to data rece1ved. Th1s is done unt11 compotf equals routoff #stopp1ng the process and returning trom the 1nterrupt. NOTE: Data being ireceived is known data and an exact copy is loaded 1nto memory prior to any #transmiss1on. # compare: addr Cbuf(sb),rl #Rl- base address of cbuf base cmpd $O,r6 #Check for potent1al invalid subtraction beq zeror6 #Jump around subtraction subd Sl,r6 # zeror6: compbyte: jump compbyte #Jump around subtraction fix movd SOxff,r6 # movd compoff,r5 # cmpb 0(rl)[r5:b],O(r4)[r5:b] #Compare data sent to data rece1ved bne wrong #Branch and set outl if wrong # cmpb SOxOO,O(r4)[r5:b] .Check tor end of buffer bne notend #Branch and 1ncrement pointers jump reload I #Test for having compared all bytes # notend: notendl: addd Sl,compoft cmpd r5,r6 beq bye tIncrement pointer # # jump compbyte # # reloadl: addd Sl,sbufcnt movd $O,compoff #Increment transmiter cnt #Reload offset of pointer jump notendl # # wrong: nop # movb $OxOc,mcr #Set out 2, for error strobe # #************************* DATA MISMATCH MESSAGE ******************************* stop: save [rO,rl,r2,r3] movd S4,rO addr meseageS,rl movd Sl7,r2 movd $O,r3 evc restore [rO,rl,r2,r3] nop jump stop # #Save register for superv1sor call #Value required by svc call #Mover address of message into rl #Number of characters 1nto r2 #Value required by svc call #Actual call #Restore registers # # nest point # TL/C/9313-18 z » • oI:lIo CD .... 4-77
ye: ret 0 # # #**************************** RETURN FROM INTERRUPT **************************** # popall: reatore [rO,rl,r2,r3,r4,r5,r6,r7] reti i # #*********************************** Messages ********************************** lsr",nt: .word .word # messagel: .byte 13,10,"Compare Complete",13,.LO message2: .byt;e 13,10, "Invalid Interrupt",13,10 message3: .byte 13,10,"Receiver Timeout",.L3,.LO message4: .byte 13,10, "Receive data avai.Lab.Le Interrupt",13,10 message5: .byte 13,10,"THRE Interrupt",13,10 message6: .byte 13,10,"Llne Status Interrupt",13,10 message7: .byte .L3,10,"Modem Status Interrupt",.L3,10 message8: .byte 13,10,"Oata Mlsmatch",13,10 xmitoff: .double 0 compoff: .double 0 blk16cnt: .double 0 sbufcnt: .double 0 rbufoff: .double 0 Ox9020 ~sr-start #Mod table #Offset of service rout1ne for #Olspatch table. TL/C/9313-19 4-78
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~ National ~ Semiconductor 400014 R
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TRADEMARKS Following is the most cu
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II) c ~ ~National ~ ~ Semiconductor
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Table of Contents (Continued) Secti
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Alpha-Numeric Index(continUed) DS36
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Section 1 Local Area Networks IEEE
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~National ~ Semiconductor DP8390C/N
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3.0 Functional Description (Continu
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5.0 Pin Descriptions (Continued) BU
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6.0 Direct Memory Access Control (D
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7.0 Packet Reception (Continued) Re
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8.0 Packet Transmission (Continued)
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10.0 Internal Registers (Continued)
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.----------------------------------
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12.0 Loopback Diagnostics (Continue
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13.0 Bus Arbitration and Timing The
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13.0 Bus Arbitration and Timing (Co
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15.0 Switching Characteristics AC S
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15.0 Switching Characteristics (Con
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AC Timing Test Conditions Input Pul
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2.0 Block Diagram COL CRS PROTOCOL
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4.0 Transmit/Receive Packet Encapsu
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5.0 Pin Descriptions (Continued) BU
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7.0 Packet Reception (Continued) fo
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7.0 Packet Reception (Continued) Er
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9.0 Remote DMA The Remote DMA chann
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11.0 Initialization Procedures (Con
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13.0 Bus Arbitration and Timing The
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15.0 Switching Characteristics AC S
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AC Timing Test Conditions Input Pul
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2.0 Block Diagram TRANSCEIVER CABLE
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PCC Connection Diagram 39.0. 39.0.
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6.0 Absolute Maximum Ratings Recomm
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9.0 Timing and Load Diagrams (Conti
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2.0 Block Diagram COAX CABLE r ____
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~~L ~------------------------------
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6.0 Absolute Maximum Ratings (Note
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I: • • • • • • Interrup
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PAL20LB Decode and DMA Interface Lo
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~ U16/8 R1 R1,R2=4.7k.o. Note: For
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Although Cheapernet is intended for
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The transmitted packet from the SNI
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Truth Table for Various Collision D
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CHEAPERNET APPLICATION WITH THE DP8
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DP8390 Network Interface Controller
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ping between the received address a
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If the current local DMA address ev
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6.2 Dual Port Memory One popular me
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StarLAN With The DP839EB Evaluation
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SUPPORTING DOCUMENTS The following
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Pulse Transformer U3 .----. j " "P>
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ELECTROSTATIC DISCHARGE TEST (ESD)
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Section 2 Contents DP8340INS32440 I
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.. 0 C'I C") en .... z 0 C") GO Go
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~ 'OIl' N CO) (J) Z .... o 'OIl' CO
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Timing Characteristics Oscillator F
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Timing Waveforms (Continued) TA REG
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.. ... ~ ~National ~ ~ Semiconduc
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Detailed Functional Pin Description
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Message Format (Continued) DATA REC
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Timing Characteristics (Notes 2, 6,
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Timing Waveforms (Continued) 4T±(T
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Typical Applications (Continued) +5
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N r--------------------------------
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~ ..,. r---------------------------
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Timing Characteristics (Continued)
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Functional Timing Waveforms (Contin
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Typical Applications (Continued) DA
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C") "Ot "Ot N C") en ...... z C") "
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) r--------------------------------
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Absolute Maximum Ratings (Note 1) I
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(W) r------------------------------
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M r--------------------------------
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MUX~ __________________ The BIPLAN
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U) ,-------------------------------
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~r---------------------------------
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~ .--------------------------------
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An EPROM implementation was selecte
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MASTER MUL TIPLEXING/DE-MUL TIPLEXI
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AN·496 '" 0, '" (U17/ (U23/6) TO 5
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AN-496 t W19 ~ J2-43 I' [; 0 J2-42
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AN·496
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DP8342/DP8343 HIGH SPEED INTERFACE
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2.0 Connection Diagram A13- 12 A12-
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3.0 Pin Descriptions (Continued) Si
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~ ~ 4.0 Electrical Specifications (
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4.0 Electrical Specifications (Cont
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~ ~ 4.0 Electrical Specifications (
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c( '
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~L ______________ ___ ~ ~ 4.0 Elect
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5.0 Instruction Set Overview (Conti
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6.0 Instruction Set Reference (Cont
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~ ,--------------------------------
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~ C') 6.0 Instruction Set Reference
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! 6.0 Instruction Set Reference (Co
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~ ~ 6.0 Instruction Set Reference (
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== ~ 6.0 Instruction Set Reference
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7.0 CPU Registers (Continued) BIT I
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7.0 CPU Registers (Continued) BIRO
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7.0 CPU Registers (Continued) 76543
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7.0 CPU Registers (Continued) BIT D
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7.0 CPU Registers (Continued) BIT D
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8.0 Remote Interface and Arbitratio
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~ ~ HASM state TCU state eLK-OUT RE
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~I tn tn ...._,__'RS A RS, RSC IMEM
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~ 01 CO RASM stat. TCU stat. CLK-OU
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~ ~ I\~"'''' I 'ow = "[OW2-0) , RS
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~ 8l HASM stat. TCU stat. CU- C» b
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.----------------------------------
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10.0 Transceiver (Continued) (a) 32
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10.0 Transceiver (Continued) TABLE
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10.0 Transceiver (Continued) dotted
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10.0 Transceiver (Continued) TABLE
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10.0 Transceiver (Continued) {also
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-----------------------------------
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Decoding Bit Fields with the JRMK I
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Receiver Interrupts/Flags for the D
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****************DA ISR*************
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"Interrupts"-A Powerful Tool of the
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TABLE II. (lCR) Interrupt Mask Bits
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Running the DP8344 with wait states
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» z I U'I Q 01:00 INSTRUCTION ADDR
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WHY EPROM SOFT-LOAD? In a stand-alo
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RESET ~. Timing at Beginning of Ins
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.. I CRYSTAL ~~~.~ I UP TO 64K OP83
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The roll-off frequency, Fro, should
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ceives messages whose first frame a
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RECEIVER INTERRUPT The receiver int
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JMP n LJMP n JMPR Rs JMPI Ptr JRMK
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,----------------------------------
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00044 F90a :J- 226 Z • 227 MOVE A
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l> Z 00074 80BD 2'18 en • 00075 0
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Section 3 ISDN Components
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Introduction To National Semiconduc
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NSC Solutions for Layers 2 and 3 Na
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NSC Solutions: Systems Level Basic
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-----------------------------------
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~National ~ Semiconductor PRELIMINA
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ISDN DEFINITIONS "B" Channel, or DS
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~ '" TE2 UP TO 8 TERMINALS -
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Section 4 Contents INS8250/INS8250-
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m . r------------------------------
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3.0 AC Electrical Characteristics T
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. ID
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5.0 Block Diagram INTERNAL DATA IUS
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6.0 Pin Descriptions (Continued) In
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8.0 Registers (Continued) and 1, on
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8.0 Registers (Continued) 8.5 INTER
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m r--------------------------------
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~ &I) o N m Z ::::: o &I) 'Of' o co
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~ Lt) o N co U) Z ::::: o Lt) '
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4.0 Timing Waveforms (Continued) Re
Page 432 and 433: 6.0 Pin Descriptions (Continued) Re
Page 434 and 435: 8.0 Registers The system programmer
Page 436 and 437: 8.0 Registers (Continued) 8.3 PROGR
Page 438 and 439: 8.0 Registers (Continued) Table II
Page 440 and 441: 9.0 Typical Applications (Continued
Page 442 and 443: Table of Contents 1.0 ABSOLUTE MAXI
Page 444 and 445: 3.0 AC Electrical Characteristics T
Page 446 and 447: 4.0 Timing Waveforms (Continued) Wr
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Page 450 and 451: 5.0 Block Diagram AO A, A2 CSD CSI
Page 452 and 453: 6.0 Pin Descriptions (Continued) tr
Page 454 and 455: ... .I>. '" Bit No. TABLE II. Summa
Page 456 and 457: 8.0 Registers (Continued) 8.3 PROGR
Page 458 and 459: 8.0 Registers (Continued) When the
Page 460 and 461: '" .j>. 01 PHil This shows the basi
Page 462 and 463: ,----------------------------------
Page 464 and 465: 3. The Rx FIFO will hold 16 bytes r
Page 466 and 467: NS16550A E-J r-o ..... IRQ4 ICU CPU
Page 468 and 469: TITLE 550APP.ASM - NS16550A INITIAL
Page 470 and 471: 3.0 Board to Board Communications w
Page 472 and 473: DIAPPS.ASM Flow Chart l> z • ~ CO
Page 474 and 475: » z I "" CD RDAI: DISABLE IRTS, SE
Page 476 and 477: COMPARE: SET UP COMPARE BUffER POIN
Page 478 and 479: .set iCu imsk,lO *aO • set icu -c
Page 480 and 481: holdloop: nop # br hold loop # # #*
Page 484 and 485: #3/30/B7••••• D2APPS.ASM
Page 486 and 487: # #*************************** 1655
Page 488 and 489: -----------------------------------
Page 490 and 491: A Comparison of the I NS8250, NS 16
Page 492 and 493: -----------------------------------
Page 494 and 495: cessed (see Figure 4), The output o
Page 496 and 497: AC Electrical Characteristics T A =
Page 498 and 499: ~National ~ Semiconductor \ J micro
Page 500 and 501: 1.0 Absolute Maximum Ratings 2.0 Op
Page 502 and 503: 4.0 AC Electrical Characteristics (
Page 504 and 505: 5.0 Timing Waveforms (Continued) ii
Page 506 and 507: -----------------------------------
Page 508 and 509: 6.0 Connection Diagrams Dual-In-Lln
Page 510 and 511: 8.0 Block Diagram CPU INTERFACE INT
Page 512 and 513: 9.0 Registers (Continued) Bit three
Page 514 and 515: .----------------------------------
Page 516: -----------------------------------
Page 519 and 520: Section 5 Contents MM74HC942 300 Ba
Page 521 and 522: Absolute Maximum Ratings (Notes 1 &
Page 523 and 524: fj ::z:: ~ :::IE :::IE ~ ,---------
Page 525 and 526: Applications Information (Continued
Page 527 and 528: Absolute Maximum Ratings (Notes 1 &
Page 529 and 530: Description of Pin Functions Pin No
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~ r--------------------------------
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Electrical Characteristics Unless o
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C'I 5 Pin Descriptions (Continued)
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IlAV22 RXIN LOCAL OSCILLATOR (L.O.)
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Functional Description (Continued)
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Functional Description (Continued)
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Absolute Maximum Ratings* If Milita
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Electrical Characteristics unless o
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Functional Description* (Continued)
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,...A212AT RECEIVE FILTER p--------
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TABLE III. Remote Digital Loopback
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.... ~ ~ U) r----------------------
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..... U) z • U) r----------------
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~ .... ,---------------------------
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.,... U) Z 3020 LPRINT USING" 1111
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~ .... r---------------------------
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. II) or- II) Z
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,.. i ~~---------------------------
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Section 6 Transmission Line Drivers
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~National ~ Semiconductor Transmiss
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~National ~ Semiconductor OS 1488 Q
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J?'A National ~ Semiconductor OS 14
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~National ~ Semiconductor DS26C31 C
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~National ~ Semiconductor DS26C32C
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~National ~ Semiconductor DS34C86 Q
Page 584 and 585:
~National ~ Semiconductor PRELIMINA
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~National ~ Semiconductor DS1692/DS
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~National ~ Semiconductor DS75150 D
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~National ~ Semiconductor DS75176A/
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-----------------------------------
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~National ~ Semiconductor DS8922/22
Page 596 and 597:
~National ~ Semiconductor DS96172/~
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~National ~ Semiconductor DS961771
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~National ~ Semiconductor DS9637 AI
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• I .----------------------------
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Section 7 Physical Dimensions
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~National ~ Semiconductor All dimen
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NS Package N16A N16A(REV E) 0.092 X
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t-------------I:..':::~"':I'-------
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0.11M-0.118 (2.642-2.9971 .. ••
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NOTES
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~National ~ Semiconductor Bookshelf
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RELIABILITY HANDBOOK-1986 Reliabili
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NATIONAL SEMICONDUCTOR CORPORATION
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NATIONAL SEMICONDUCTOR CORPORATION
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~ National ~ Semiconductor
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