This is revision A of the GAL Adaptor Board and it is currently a work in progress.

EMDP1 GAL Adaptor Board (Rev. A)

Table of Contents

• Table of Contents
• Introduction
• Schematic
• Printed Circuit Board
• Issues

Introduction

The GAL adaptor is used to program namely the 16V8, 18V10, 20V8, 22V10, 20XV10, 20RA10, 6001, 6002, and 26CV12 GAL's.

Schematic

The schematic for this revision is shown below:

The N1 connector is assigned as follows:

Pin	Name	Connected To
1	SCL	U1-SCL
2	GND	Ground
3	SDA	U1-SDA
4
5
6	+5V	Vcc
7
8	BD0	PROG_LED
9	BD1	ZIF40 Pin 39
10	BD2	ZIF40 Pin 27
11	BD3	ZIF40 Pin 29
12	BD4	ZIF40 Pin 30
13	BD5	ZIF40 Pin 14
14	BD6	ZIF40 Pin 31
15	BD7	ZIF40 Pin 13
16	BD8	ZIF40 Pin 32
17	BD9	ZIF40 Pin 11
18	BD10	Plug Pin 4
19	BD11	ZIF40 Pin 9
20	BD12	Plug Pin 6
21	BD13	ZIF40 Pin 8
22	BD14	ZIF40 Pin 6
23	BD15	ZIF40 Pin 5
24	BD16	ZIF40 Pin 36
25	BD17	ZIF40 Pin 4
26	BD18	ZIF40 Pin 38
27	BD19	ZIF40 Pin 37
28	BD20	ZIF40 Pin 3
29	BD21	Plug Pin 13 (ID0)
30	BD22	Plug Pin 14 (ID1)
31	BD23	Plug Pin 15 (ID2)
32	BD24	Plug Pin 16 (ID3)
33	BD25	Ground (ROMID0)
34	BD26	Ground (ROMID1)
35	(BD27)	No Connection
36	VAR1	Plug Pin 12 (V1)
37	VAR2	ZIF40 Pin 2
38
39
40

The plug, N3, has its pin assignments as shown below:

Pin	Name	Connected To
1	P12	ZIF40 Pin 12
2	GND	Ground
3	P10	ZIF40 Pin 10
4	BD10	N1 Pin 18
5	P33	ZIF40 Pin 33
6	BD12	N1 Pin 20
7	P7	ZIF40 Pin 7
8	NC1	No Connection
9	P40	ZIF40 Pin 40
10	NC2	No Connection
11	PD4	Pull Down 4
12	V1	N1 Pin 36 (VAR1)
13	ID0	N1 Pin 29 (BD21)
14	ID1	N1 Pin 30 (BD22)
15	ID2	N1 Pin 30 (BD23)
16	ID3	N1 Pin 30 (BD24)

Printed Circuit Board

The following printed circuit board files exist:

gal_artwork.png

The artwork layer picture (PNG).

gal_back.png

The back layer picture (PNG).

gal_front.png

The front layer picture (PNG).

gal.gal

The artwork Gerber (RS274X) file.

gal.gbl

The back (solder side) Gerber (RS274X) file

gal.gtl

The front (component side) Gerber (RS274X) file.

gal.gml

The mask (both sides) Gerber RS274X) file.

gal.drl

The drill (Excellon) file.

gal.tol

The tool file that lists hole counts.

Issues

Any fabrication issues will be listed here.