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--------------------------------------------------------------------,~ threi: send15: sendnext: finlsh: abort: setsnd16: reload: addr sbuf(sb),rO movw xmltoff,rl cmpd $0,blk16cnt beq send15 movd $OxlO,r7 jump sendnext movd $OxOf,r7 movb O(rO)[rl:b],txd addqw l,rl cmpw rl,$256 beq reload save [r7] movb msreg,r7 andb $Oxl0,r7 cmpb $O,r7 restore [r7] beq abort subb $1,r7 cmpb $0,r7 bne sendnext movw rl,xmitoff cmpd $O,blk16cnt beq setsnd16 subb $1,blk16cnt jump popal! movd $16,blk16cnt jump popal! movd $O,rl jump finish #************************ LINE STATOS Isint: save [rO,rl,r2,r3] movd $4,rO addr message6,rl movd $25,r2 movd $O,r3 svc restore [rO,rl,r2,r3] movb Isr,r3 jump rdai #****.******************* MODEM STATUS ms1nt: save [rO,r1,r2,r3] movd $4,rO adde message7,rl movd $26,r2 movd $O,r3 svc movb OxOd00018,rO restore [rO,rl,r2,r3] jump popal! #***************************** COMPARE #RO contalns base pointer Isetup xmlt ptr offset ICheck to see lf it is the 16th block #Yes, send only 15 bytes instead ot 16 #No, send 16 bytes .Jump around 15 byte load #Load counter tor 15 byte load ILoad a byte into the transmitter I IAre we one address past end of table #Yes, reload ptr tRead modem status reg IMask all bits except CTS (MSR4) ICheck for disabled CTS iLeave on inactive CTS (MSR4=0) INo, decrement counter and continue #Is byte counter O? INo, send next byte Isave xmit ptr offset 1n ram .Check to see if it is 16th block IYes, reload block counter IOecrement block counter IF1nished sending 16 bytes IRe load block counter .F1nished send1ng 15 bytes #Reset offset .Go back and finish INTERRUPT • ROUTINE ************************ # I I I # I I # .Read Isr # I INTERRUPT ROUTINE *********************** •# # # # I I # # I DATA ROUTINE **************************** #The rece1ver subrout1ne branches to this • subroutine after it has removed all of Ithe data from the Rx FIFO. The receive offset (rbufoff) 1s changed to point to #the last byte received in rbuf. The compare offset (compoff) pOlnts to each #byte in the recelve buffer and its associated byte ln the compare register. #Compoff 1s incremented after each successful comparison and the comparisons TL/C/9313-24 Z ~ .... 4-83
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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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-----------------------------------
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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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-----------------------------------
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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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-----------------------------------
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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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-----------------------------------
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-----------------------------------
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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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,----------------------------------
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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
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6.0 Pin Descriptions (Continued) Re
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8.0 Registers The system programmer
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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
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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 482 and 483: # msint: save [rO,rl,r2,r3] # movd
Page 484 and 485: #3/30/B7••••• D2APPS.ASM
Page 486 and 487: # #*************************** 1655
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
Page 531 and 532: ~ r--------------------------------
Page 533 and 534: ~ r--------------------------------
Page 535 and 536: Electrical Characteristics Unless o
Page 537 and 538: 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
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~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
Page 606 and 607:
~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
Page 618 and 619:
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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