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6.0 Absolute Maximum Ratings (Note 1) Recommended Operating Supply Voltage (VEE) -12V Conditions Package Power Rating at 25'C 3.5 Watts' Supply Voltage (VEE) -9v ±5% (PC Board Mounted) See Section 5 Derate linearly at the rate of 28.6 mW rc Input Voltage Oto -12V Ambient Temperature 0' to 70'C If Military/Aerospace specified devices are required, contact the National Semiconductor Sales Office/ Storage Temperature - 65' to 150'C Distributors for availability and specifications. Lead Temp. (Soldering, 10 seconds) 260'C >IoFor actual power dissipation of the device please refer to section 7.0, C ." QO Co) CD N » .... z en Co) N ~ CD N » 7.0 Electrical Characteristics VEE = -9V ±5%, TA = 0't070'C(Notes2&3) Symbol Parameter Min Typ Max Units IEE1 Supply current out 01 VEE pin-non transmitting -85 -130 rnA IEE2 Supply current out of VEE pin-transmitting -125 -180 rnA IRXI Receive input bias current (RXI) -2 +25 /-,A ITOC Transmit output dc current level (TXO) 37 41 45 rnA ITAC Transmit output ac current level (TXO) ±28 ITDC rnA VCD Collision threshold (Receive mode) -1.45 -1.53 -1.58 V VOD Differential output voltage (RX ± , CD ± ) ±550 ±1200 mV VOC Common mode output voltage (RX ± , CD ± ) -1.5 -2.0 -2.5 V VOB Dill. output voltage imbalance (RX ±, CD ± ) ±40 mV VTS Transmitter squelch threshold (TX±) -175 -225 -300 mV Cx Input capacitance (RXI) 1.2 pF RRXI Shunt resistance-non transmitting (RXI) 100 Kfl RTXO Shunt resistance-transmitting (TXO) 10 Kfl 8.0 Switching Characteristics VEE = -9V ±5%, TA = 0' to 70'C (Note 3) Symbol Parameter Fig Min Typ Max Units tRON Receiver startup delay (RXI to RX ±) 5 & 11 4 bits tRd Receiver propagation delay (RXI to RX ± ) 5 & 11 15 50 ns tRr Differential outputs rise time (RX ± , CD ±) 5 & 11 4 ns tRI Differential outputs lall time (RX ± , CD ± ) 5 & 11 4 ns tRJ Receiver & cable total jitter 10 ±2 ns tTST Transmitter startup delay (TX± to TXO) 6 & 11 1 bits tTd Transmitter propagation delay (TX± to TXO) 6 & 11 25 50 ns tTr Transmitter rise time -10% to 90% (TXO) 6 & 11 25 ns tTl Transmitter fall time -90% to 10% (TXO) 6 & 11 25 ns tTM tTr and tTl mismatch 0.5 ns tTS Transmitter skew (TXO) ±0.5 ns tTON Transmit turn-on pulse width at VTS (TX ±) 6 & 11 20 ns tTOFF Transmit turn-off pulse width at VTS (TX ±) 6 & 11 250 ns tCON Collision turn-on delay 7 & 11 7 bits tCOFF COllision turn-ofl delay 7 & 11 20 bits ICD Collision frequency (CD ±) 7 & 11 8.0 12.5 MHz tcp Collision pulse width (CD ±) 7 & 11 35 70 ns tHaN CD Heartbeat delay (TX ± to CD ±) 8 & 11 0.6 1.6 /-,S tHW CD Heartbeat duration (CD ±) 8 & 11 0.5 1.0 1.5 /-,S lJA Jabber activation delay (TX ± to TXO and CD ±) 9 & 11 20 29 60 ms tJR Jabber reset unjab time (TX ± to TXO and CD ±) 9 & 11 250 500 750 ms Note 1: Absolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the device should be operated at these limits. Note 2: All currents into device pins are positive, all currents out of device pins are negative. All voltages referenced to ground unless otherwise specified. Note 3: All typicals are given lor VEE ~ -9V and TA ~ 25'C. --! 1-119
9.0 Timing and Load Diagrams RXI : ... ----IRON ----.~': , RX+/- ---------------------------~ ~ II II tRf --.: :~ ~: :..... tRr FIGURE 5. Receiver Timing TLlF17405-6 TX+/- V,VTS , ITON --:, :- :~ trOrF' ---.: --, tTST ,- /'-----------,'~~ ~--------------------- TXO FIGURE 6. Transmitter Timing TLlF/7405-7 INPUT STEP fUNCTION I RXI~max) R= 1 k J. I IC=510p, ~' I I I _ I I RXI DP8392A COt COLLISION DETECTOR OUTPUT RAND C NETWORK SIMULATES WORST CASE CABLE 98~ STEP RESPONSE VCD (mln) _____ , :....-- tcorf -----: CD + /- -------------------, 1/fCD --: , - FIGURE 7. Collision Timing , , :- tcp TL/FI740S-8 TX+/-Ul..J"""---------------- -----tHON-----.. :.....--- tHW-: CD+/---------------; FIGURE 8. Heartbeat Timing TLlF/7405-9 1-120
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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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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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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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Page 114 and 115: AC Timing Test Conditions Input Pul
Page 116 and 117: 2.0 Block Diagram TRANSCEIVER CABLE
Page 118 and 119: PCC Connection Diagram 39.0. 39.0.
Page 120 and 121: 6.0 Absolute Maximum Ratings Recomm
Page 122 and 123: 9.0 Timing and Load Diagrams (Conti
Page 126 and 127: 2.0 Block Diagram COAX CABLE r ____
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Page 138 and 139: I: • • • • • • Interrup
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Page 142 and 143: ~ U16/8 R1 R1,R2=4.7k.o. Note: For
Page 144 and 145: Although Cheapernet is intended for
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Page 148 and 149: Truth Table for Various Collision D
Page 150 and 151: CHEAPERNET APPLICATION WITH THE DP8
Page 152 and 153: DP8390 Network Interface Controller
Page 154 and 155: ping between the received address a
Page 156 and 157: If the current local DMA address ev
Page 158 and 159: 6.2 Dual Port Memory One popular me
Page 160 and 161: StarLAN With The DP839EB Evaluation
Page 162 and 163: SUPPORTING DOCUMENTS The following
Page 164 and 165: Pulse Transformer U3 .----. j " "P>
Page 166: ELECTROSTATIC DISCHARGE TEST (ESD)
Page 169 and 170: Section 2 Contents DP8340INS32440 I
Page 171 and 172: .. 0 C'I C") en .... z 0 C") GO Go
Page 173 and 174: ~ 'OIl' N CO) (J) Z .... o 'OIl' CO
Page 175 and 176: Timing Characteristics Oscillator F
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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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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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Absolute Maximum Ratings (Note 1) I
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(W) r------------------------------
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MUX~ __________________ The BIPLAN
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U) ,-------------------------------
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~r---------------------------------
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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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~ 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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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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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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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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~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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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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~ &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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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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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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A Comparison of the I NS8250, NS 16
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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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6.0 Connection Diagrams Dual-In-Lln
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8.0 Block Diagram CPU INTERFACE INT
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9.0 Registers (Continued) Bit three
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Section 5 Contents MM74HC942 300 Ba
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Absolute Maximum Ratings (Notes 1 &
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fj ::z:: ~ :::IE :::IE ~ ,---------
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Applications Information (Continued
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Absolute Maximum Ratings (Notes 1 &
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Description of Pin Functions Pin No
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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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.,... U) Z 3020 LPRINT USING" 1111
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. II) or- II) Z
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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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~National ~ Semiconductor DS8922/22
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~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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