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ECBbus pinout

bus or interface

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The ECB-bus was defined in 1984 by the german company KONTRON. It was defined of 100x160mm-europa-card and used 2x32 pins (row a and c). Later the third (middle) row of pins was defined for 16-bit-systems. Such bus uses all 3x32pins.

96 pin DIN 41612 (3x32) female connector layout

96 pin DIN 41612 (3x32) female connector
at the backplane



Row a & c (for 8 bit)

PinNameDesciption
a1 +5V +5 volts dc
a2 D5 Data line bit 5
a3D6Data line bit 6
a4D3Data line bit 3
a5D4Data line bit 4
a6A2Address 2
a7A4Address 4
a8A5Address 5
a9A6Address 6
a10WAIT/CPU wait
a11BUSRQ/bus request
a12  
a13  
a14  
a15  
a16  
a17  
a18A14address 14
a19  
a20M1/first cycle
a21  
a22  
a23  
a24  
a25  
a26  
a27IORQ/in/out request
a28RFSH/refresh cycle
a29A13address 13
a30A9address 9
a31BUSAK/bus acknowledge
a32GNDsignal ground
PinNameDesciption
c1+5V+5 volts dc
c2D0Data line bit 0
c3D7Data line bit 7
c4D2Data line bit 2
c5A0Address 0
c6A3Address 3
c7A1Address 1
c8A8Address 8
c9A7Address 7
c10  
c11IEIinterrupt enable in
c12  
c13  
c14D1Data line bit 1
c15  
c16IEOinterrupt enable out
c17A11address 11
c18A10address 10
c19  
c20NMI/not maskable interrupt
c21INT/normal interrupt
c22WR/write cycle
c23  
c24RD/read cycle
c25HALT/cpu stopped
c26  
c27A12address 12
c28A15address 15
c29  
c30MREQ/memory request
c31RESET/cpu reset
c32GNDsignal ground

Row b (additional for 16 bit)

PinNameDesciption
b1+5V+5 volts dc
b2A20address 20
b3A21address 21
b4A22address 22
b5A23address 23
b6D8data line bit 8
b7D9data line bit 9
b8D10data line bit 10
b9D11data line bit 11
b10D12data line bit 12
b11D13data line bit 13
b12D14data line bit 14
b13D15data line bit 15
b14IRQ7interrupt 7
b15IRQ6interrupt 6
b16IRQ5interrupt 5
b17IRQ4interrupt 4
b18IRQ3interrupt 3
b19IRQ2interrupt 2
b20IRQ1interrupt 1
b21IRQ0interrupt 0
b22IOWRI/O write
b23????
b24IORCI/O read
b25MRDCMem read
b26????
b27MWRCMem write
b28DS0Data Select 0
b29DS1Data Select 1
b30OFFbus driver tristate
b31LOCKbus driver tristate disabled
b32GNDsignal ground
DS0 DS1 Description
00data transfer 16-bit
01only bit 0-7
10only bit 8-15
11no data transfer

Note: / = Active Low


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Pinouts.ru > Buses and slots connectors pinouts >  Pinout of ECBbus and layout of 96 pin DIN 41612 (3x32) female connector
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Source(s) of this and additional information: One issue of the magazine computer-technik (c"t) in 1984 and Gerd Wilken 0 reports
Last updated at Sat Jun 25 2005. Submit additions or corrections for this document. Is this document correct or incorrect? What is your opinion?
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