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CONNEX 105, LE1021C

BLACK BOX CORPORATION

CONNEX 105, LE1021C

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

16-bit ISA

Topology

Linear Bus

Wiring Type

RG-58A/U 50ohm coaxial

AUI transceiver via DB-15 port

Boot ROM

Available

I/O BASE ADDRESS & BOOT ROM ADDRESS

I/O Address

Boot ROM Address

W1

W3

300h

C8000-C8FFFh

Closed

Closed

320h

CC000-CFFFFh

Closed

Open

340h

D0000-D3FFFh

Open

Closed

360h

D4000-D7FFFh

Open

Open

BOOT ROM

Setting

W2

Disabled

Open

 

Enabled

Closed

WAIT STATE

Setting

W4

0 wait states

Open

 

1 wait state

Closed

CABLE TYPE

Type

W5 & W13

W6 - W11

RG-58A/U 50ohm coaxial

Pins 2 & 3 Closed

Pins 2 & 3 Closed

 

AUI transceiver via DB-15 port

Pins 1 & 2 Closed

Pins 1 & 2 Closed

SIGNAL QUALITY ERROR (SQE) TEST

Setting

W12

Enabled

Pins 2 & 3 Closed

 

Disabled

Pins 1 & 2 Closed

Note:Signal Quality Error (SQE) is a test of the collision circuitry and path.

DMA CHANNELS

Channel

W14

W15

W16

W17

W18

W19

W23

W24

DMA3

Open

Open

Open

Open

Open

Open

Closed

Closed

 

DMA5

Open

Open

Open

Open

Closed

Closed

Open

Open

 

DMA6

Open

Open

Closed

Closed

Open

Open

Open

Open

 

DMA7

Closed

Closed

Open

Open

Open

Open

Open

Open

INTERRUPT REQUEST

IRQ

W20

W21

W22

W25

 

Disabled

Open

Open

Open

Open

 

2/9

Open

Open

Open

Closed

3

Closed

Open

Open

Open

 

4

Open

Closed

Open

Open

 

5

Open

Open

Closed

Open