Mother Board Interconnect

back plane Interconnect List

Connector	Configuration	Pin Centers	Intended Use
JO	2x5O pin	.125 centers	CPU board
J5	2x22 pin	.156 centers	Memory option
J1 & J2	2x22 pin	.156 centers	I/O boards (parallel from INS8255 A)
J3 & J4	2x22 pin	.156 centers	I/O boards (parallel from INS8255 B)
J6	50 pin	.100 centers	Mother board to CPU board
J9	20 pin	.100 centers	LED card
J10	10 pin	.100 centers	Bumper switches
J11	4 pin	.156 centers	Main battery and recharge lines
J12	14 pin	DIP socket	Interface panel
J13	5 pin	.100 centers	Sonar cable
J14	8 pin	.100 centers	Motor control board
J19	2 pin	.156 centers	Sonar/LED switch cable

NOTE: If you plan to design your own PC boards for options that you add to RB5X, we recommend you become very familiar with the mother board schematic contained later in this section so that you can make the appropriate pin assignments.

The mother board is fused for 1 amp. The electronics that run the base unit draw about 1/4-amp; an RB5X with optional voice/sound synthesis and the BR Arm draws just over 1/2-amp. if you plan to install other options, you may want to use a larger fuse.

In addition to power and input/output (I/0) lines, sockets J1, J2, J3, and J4 on the mother board also have bus request, reset, disconnect, and clock lines available. J5 has all of these lines plus address and data lines.

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