Crystal Vision
Hardware installation
20/09/05
8
DDAA246 User Manual V1.10
3.2 General purpose interface
The external GPI control lines 'a' to 'f' at the frame remote connectors may be used to
control the DDAA246 remotely with remote switches emulating some of the front panel
switches. The GPI lines are normally pulled up on-board to +5V via 10k
Ω
and will
withstand up to +35V.
GPI Connections
OPEN
CONNECT TO GROUND
‘a’
Channel A 625-line if manual standard
selected on jumper PL4
Channel A 525-line if manual standard
selected on jumper PL4
‘b’
Blank channel A PAL lines 7 to 22 & 320 to
335, NTSC lines 10 to 20 & 273 to 282.
Unblank channel A PAL lines 7 to 22 & 320
to 335, NTSC lines 10 to 20 & 273 to 282.
‘c’
Channel B 625-line if manual standard
selected on jumper PL5
Channel B 525-line if manual standard
selected on jumper PL5
‘d’
Blank channel B PAL lines 7 to 22 & 320 to
335, NTSC lines 10 to 20 & 273 to 282.
Unblank channel B PAL lines 7 to 22 & 320
to 335, NTSC lines 10 to 20 & 273 to 282.
‘e’
Channel A input present
Channel A input absent
‘f’
Channel B input present
Channel B input absent
The following tables show the GPI pinout for each frame:
2U frame GPI Connections
GPI lines ‘a’ to ‘f’ of each card connect to one of four rear remote connectors as follows:
Slot no.
‘a’ pin
‘b’ pin
‘c’ pin
‘d’ pin
‘e’ pin
‘f’ pin
1
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
3
8 (3)
9 (3)
18 (3)
26 (3)
19 (4)
20 (4)
4
7 (3)
16 (3)
17 (3)
25 (3)
10 (4)
11 (4)
5
5 (1)
6 (1)
15 (1)
24 (1)
1 (2)
2 (2)
6
4 (1)
14 (1)
13 (1)
23 (1)
3 (2)
4 (2)
7
5 (3)
6 (3)
15 (3)
24 (3)
1 (4)
2 (4)
8
4 (3)
14 (3)
13 (3)
23 (3)
3 (4)
4 (4)
9
3 (1)
12 (1)
22 (1)
21 (1)
12 (2)
13 (2)
10
10 (1)
11 (1)
19 (1)
20 (1)
21 (2)
22 (2)
11
3 (3)
12 (3)
22 (3)
21 (3)
12 (4)
13 (4)
12
10 (3)
11 (3)
19 (3)
20 (3)
21 (4)
22 (4)
Table shows Pin number (Remote number)
Note:
Remote 1 and Remote 3 are 26 way high density ‘D’ type female sockets and frame
ground is pin 2 and +5V @500mA is pin 1 in each case.
Remote 2 and Remote 4 are 26 way high density ‘D’ type male plugs and frame ground is
pin 6 and +5V @500mA is pin 15 in each case.
