2-1
2
Functional Description
This section describes the features of the PDISO-8 board to familiarize
you with the operating options and to enable you to make the best use of
your board. Figure 2-1 shows a block diagram of the PDISO-8 board.
Figure 2-1. Block Diagram of the PDISO-8
OP0
470
Ω
Bus
Buffers
Address
Decode
and R/W
Logic
Base
Address
Switch
Computer Bus
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Input Register and Switchab
le Filters
Output Register with Readbac
k
Isolated Inputs
Relay Outputs
OP1
OP2
OP3
OP4
OP5
OP6
OP7
IP0
470
Ω
IP1
470
Ω
IP2
470
Ω
IP3
470
Ω
IP4
470
Ω
IP5
470
Ω
IP6
470
Ω
IP7
Response
Switch
Reset