Octagon 6000 Series, User Manual

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6-13
6000 Series user’s manual EZ I/O
≡
Configuring and programming the EZ I/O ports
On powerup and software or hardware reset, all digital I/O lines are reset as
inputs.
Each digital I/O connector has an Octagon EZ I/O digital chip associated
with it. Each has three ports with eight parallel I/O lines (bits) per port.
The address of the port is determined by jumper settings as follows:
Table 6-9 EZ I/O base address selection: 6020
IA:
W2[7-8] IB:
W1[9-10] J1: EZ I/O 1
address
J7: EZ I/O 2
address
CTC:
I/O address Gate address
& bit
not
jumpered
not
jumpered
320H 328H 330H 0xA8, bit 4
jumpered not
jumpered
120H 128H 130H 0xA8, bit 4
not
jumpered
jumpered 340H 348H 350H 0xA8, bit 4
jumpered* jumpered* 140H* 148H* 150H* 0xA8, bit 4
* = default, pins jumpered
Note Selecting a different EZ I/O address for the 6020 PC Microcontroller also
selects a different I/O address for the CTC (Counter Timer Controller). For
information on the CTC, refer to the Description section in the Counter timer
controller chapter.
Table 6-10 EZ I/O base address selection: 6040 and 6050
IA: W2[7-8] IB: W1[9-10] I/O address: J1
not jumpered not jumpered 320H
jumpered not jumpered 120H
not jumpered jumpered 340H
jumpered* jumpered* 140H*
* = default, pins jumpered
On the 6040 PC Microcontroller, ports A, B and C can be programmed as all
inputs, all outputs or individually as inputs or outputs. On the 6050 PC
Microcontroller, port B can only be programmed as outputs, while ports A
and C can be programmed as inputs or outputs. You can alter which bits are
inputs or outputs by writing a control command to the control register in the
EZ I/O. When a line is configured as an output, it can sink a maximum of 15
mA at 0.4V or can source 15 mA at 2.4V.