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.----------------------------------------------------------,~ 2370 PRINT 2380 PRINT 2390 LPRINT 2400 LPRINT 2410 MEANSG#=O 2420 GAIN#(O)=O 2430 Kl=KMIN# 2440 Z=O 2450 GOSUB 2770 2460 F#=FC# " # " # Rline Rline Xli ne Xli ne GdB" GdB" • INITIAL CONDITION • SET FLAG: PRINT Gain VS Zload 2470 IF RW=O THEN 3550 2480 INPUT "INPUT NEW VALUE FOR Fe. INPUT 0 TO CONTlNUE":FC# • UPDATE Fe 2490 IF FC#=O THEN 3040 • ESCAPE 2500 GOSUB 2590 2510 RW=1 2520 K2=KMIN#-.11 2530 K3=KMIN#+.11 2540 K4=.01 2550 GOSUB 2640 2560 GOTO 2300 2570 END 2580 REM 2590 Z=1 2600 MIN#=O 2610 K2=0 2620 K3=1 2630 K4=.1 2640 FOR Kl=K2 TO K3 STEP K4 2650 MEANSG#=O 2660 GAIN#(O)=O 2670 GOSUB 2770 • Kl SCAN SUBROUTINE • Kl IS XMIT SIDE GAIN. WITH • Kr=1 AND NO LOSS FROM TXO • INITIAL CONDITION 2680 MEANDB#(Kl)=10*FNLOG10#(MEANSG#/14) 2690 LOCATE 1 2700 PRINT USING '~eanGdb(#.##)=+##.## ":Kl.MEANDB#(Kl) 2710 IF MEANDB#(Kl) >= MIN# THEN 2740 2720 MIN#=MEANDB#(Kl) 2730 KMIN#=Kl 2740 NEXT Kl 2750 RETURN 2760 END 2770 REM GAIN CALCULATION SUBROUTINE 2780 F#=1000 2790 FOR 1=1 TO 10 2800 GOSUB 2910 2810 NEXT I 2820 F#=2000 2830 FOR 1=11 TO 12 2840 GOSUB 2910 2850 NEXT 1 2860 F#=2500 2870 FOR 1=13 TO 14 2880 GOSUB 2910 2890 NEXT I 2900 RETURN 2910 Dl#=(I+RO#*GLINE#(I»A2+RO#A2*(BLINE#(I»A2' DENOMINATORS 2920 D2#=I+(F#/FC#)A2 2930 REAL#(I)=(I+RO#*GLINE#(I»/D1#-Kl/D2# 2940 IMAG#(I)=Kl*F#/FC#/D2#-RO#*BLINE#(I)/D1# 2950 GAIN#(I)=(REAL#(I»A2+(IMAG#(I»A2 2960 MEANSG#=MEANSG#+(GAIN#(I» 2970 IF Z=1 THEN 3030 2980 GAINDB#(1)=10*FNLOG10#(GAIN#(I» TL/H/9442-8 z en ..... CI'I 5-43
.,... U) Z 3020 LPRINT USING" 1111 #111111 +11111111 +1I11.1I";I.RE111(1l ,IMl#(l) ,GAINDB #(1) 3030 RETURN 3040 REM CALCULATE HYBRID COMPONENT VALUES 3050 PRINT 3060 LPRINT 3070 PRINT "HYBRID DESIGN VALUES" 3080 LPRINT "HYBRID DESIGN VALUES" 3090 Cll1=IE-08 3100 PRINT "INPUT TXO LEVEL (Vrms), OUTPUT POWER (dBm), NET RECEIVE PATH G<strong>Al</strong> N (dB)" 3110 INPUT VT#,POUTDBMII,GNETII 3120 POUTII=10A(POUTDBMIl/10-3) 3130 KPRII=2/VT#+SQR(POUTII*ROII/GTRANSPRII) 3140 IF KPR#)1 THEN 3750 'INSUFFICIENT DRIVE 3150 RAII=ROII/KPRII ' TXO/LOAD DIVIDER 3160 RBII=RAII*ROII/(RAII-ROII) 3170 KRII=10A (GNETII/20) IRATI02PRII 'RX PATH GAIN. RATI02PRII=RX GAIN 3180 BCII=2*PIII*FhCI# 3190 R4#=(I+KR#)/KRII/BCII/KPRII/KMINII ' TX/RX DIVIDER 3200 R511=R4#/(BCII*R411-1) 3210 GDBMII=20*FNLOG101l(VTII*KPRII*KRII)+2.2185 3220 PRINT 3230 LPRINT 3240 PRINT USING "Output levels: 11.111111 Vrms at Ra and R4,+III1.1I11 dBm to 600 0 hm load.";VT#,POUTDBMII 3250 LPRINT USING "Output levels: 1.11#11 Vrms at Ra and R4,+#II.1I11 dBm to 600 ohm load.";VT#,POUTDBMII 3260 PRINT 3270 PRINT USING "Net receive path gain: #.II#dB";GNETII 3280 LPRINT USING "Net receive path gain: +1I.lIl1dB";GNETII 3290 LPRINT 3300 PRINT 3310 PRINT Ra Rb CO(uF) Kr R4 R5 Cl(uF)" 3320 LPRINT Ra Rb CO(uF) Kr R4 R5 Cl(uF)" 3330 LPRINT 3340 PRINT USING "1I1.III1 AAAA 1I11.#II AAAA #.11#11 11.#1111 1I11.#II AAAA ##.IIIAAAA 11.111111"; RA#, RBII, CO#*1000000 , ,KRII,R411,R511,Clh1000000! 3350 LPRINT USING "1I11.II#AAAA 1I11.III AAAA 11.111111 1.#1111 1I11.#II AAAA 1I#.III1AAAA 1I.1I1111";RAII,RBII,COII*1000000!,KRII,R4I1,R511.CII1*1000000' 3360 LPRINT 3370 PRINT 3380 IF VTO#=1 THEN 3430 3390 PRINT USING "NOTE: INSERT 11#.1111 dB GAIN BETWEEN TXO AND Ra,R4";20*FNLOGIOII( VTII/VTOII) 3400 LPRINT USING "NOTE: INSERT 111.1111 dB GAIN BETWEEN TXO AND Ra,R4";20+FNLOG1011 (VTII/VTO#) 3410 PRINT 3420 LPRINT 3430 PRINT USING "For absolute TX eCho level (dBm) at RXlN, add +11.1111 dB to G db figures.";GDBM# 3440 LPRINT USING "For absolute TX eCho level (dBm) at RXIN, add +#.11# dB to Gdb figures.";GDBMI TLlH/9442-9 5-44
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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
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8.0 Registers (Continued) Table II
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9.0 Typical Applications (Continued
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Table of Contents 1.0 ABSOLUTE MAXI
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3.0 AC Electrical Characteristics T
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4.0 Timing Waveforms (Continued) Wr
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,----------------------------------
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5.0 Block Diagram AO A, A2 CSD CSI
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6.0 Pin Descriptions (Continued) tr
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... .I>. '" Bit No. TABLE II. Summa
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8.0 Registers (Continued) 8.3 PROGR
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8.0 Registers (Continued) When the
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'" .j>. 01 PHil This shows the basi
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,----------------------------------
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3. The Rx FIFO will hold 16 bytes r
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NS16550A E-J r-o ..... IRQ4 ICU CPU
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TITLE 550APP.ASM - NS16550A INITIAL
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3.0 Board to Board Communications w
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DIAPPS.ASM Flow Chart l> z • ~ CO
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» z I "" CD RDAI: DISABLE IRTS, SE
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COMPARE: SET UP COMPARE BUffER POIN
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.set iCu imsk,lO *aO • set icu -c
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holdloop: nop # br hold loop # # #*
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# msint: save [rO,rl,r2,r3] # movd
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#3/30/B7••••• D2APPS.ASM
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# #*************************** 1655
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-----------------------------------
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A Comparison of the I NS8250, NS 16
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-----------------------------------
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cessed (see Figure 4), The output o
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AC Electrical Characteristics T A =
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~National ~ Semiconductor \ J micro
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1.0 Absolute Maximum Ratings 2.0 Op
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4.0 AC Electrical Characteristics (
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5.0 Timing Waveforms (Continued) ii
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-----------------------------------
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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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Page 533 and 534: ~ r--------------------------------
Page 535 and 536: Electrical Characteristics Unless o
Page 537 and 538: C'I 5 Pin Descriptions (Continued)
Page 539 and 540: IlAV22 RXIN LOCAL OSCILLATOR (L.O.)
Page 541 and 542: Functional Description (Continued)
Page 543 and 544: Functional Description (Continued)
Page 545 and 546: Absolute Maximum Ratings* If Milita
Page 547 and 548: Electrical Characteristics unless o
Page 549 and 550: Functional Description* (Continued)
Page 551 and 552: ,...A212AT RECEIVE FILTER p--------
Page 553 and 554: TABLE III. Remote Digital Loopback
Page 555 and 556: .... ~ ~ U) r----------------------
Page 557 and 558: ..... U) z • U) r----------------
Page 559: ~ .... ,---------------------------
Page 563 and 564: ~ .... r---------------------------
Page 565 and 566: . II) or- II) Z
Page 567 and 568: ,.. i ~~---------------------------
Page 570 and 571: Section 6 Transmission Line Drivers
Page 572 and 573: ~National ~ Semiconductor Transmiss
Page 574 and 575: ~National ~ Semiconductor OS 1488 Q
Page 576 and 577: J?'A National ~ Semiconductor OS 14
Page 578 and 579: ~National ~ Semiconductor DS26C31 C
Page 580 and 581: ~National ~ Semiconductor DS26C32C
Page 582 and 583: ~National ~ Semiconductor DS34C86 Q
Page 584 and 585: ~National ~ Semiconductor PRELIMINA
Page 586 and 587: ~National ~ Semiconductor DS1692/DS
Page 588 and 589: ~National ~ Semiconductor DS75150 D
Page 590 and 591: ~National ~ Semiconductor DS75176A/
Page 592 and 593: -----------------------------------
Page 594 and 595: ~National ~ Semiconductor DS8922/22
Page 596 and 597: ~National ~ Semiconductor DS96172/~
Page 598 and 599: ~National ~ Semiconductor DS961771
Page 600 and 601: ~National ~ Semiconductor DS9637 AI
Page 602 and 603: • I .----------------------------
Page 604 and 605: Section 7 Physical Dimensions
Page 606 and 607: ~National ~ Semiconductor All dimen
Page 608 and 609: 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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