SDI-TD-MUX-4
Rev.8
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DIP setting
Description
Comments
aaxxxxxx
(X is a don’t
care bit)
aa tells which of the four inputs that are
allocated to output stream 1.
00: Input 1 (SD1)
01: Input 2 (SD2)
10: Input 3 (SD3)
11: Input 4 (SD4)
See Figure 6 to
understand how the bit-
patterns are set.
xxbbxxxx
xxxxccxx
xxxxxxdd
bb, cc and dd are similar as aa, but for
streams 2, 3 and 4 respectively.
Example 1:
00011011
Input 1 to stream 1.
Input 2 to stream 2.
Input 3 to stream 3.
Input 4 to stream 4.
No channel swapping.
See note below.
Example 2:
00110110
Input 1 to stream 1.
Input 4 to stream 2.
Input 2 to stream 3.
Input 3 to stream 4.
Example 3:
00001111
Input 1 to stream 1.
Input 1 to stream 2.
Input 4 to stream 3.
Input 4 to stream 4.
Example 4:
11111111
Input 4 to stream 1.
Input 4 to stream 2.
Input 4 to stream 3.
Input 4 to stream 4.
Or controlled by GYDA.
See note below.
Note:
The special setting in example 4 above serves dual purposes:
−
Allocate inputs to output streams according to the above description.
−
Allow GYDA commands to override DIP-setting.
This means that after the DIP-switches are changed from any setting to the 11111111
setting, the above allocations gets active, BUT at the same time allowing GYDA to send
commands with any other input-to-stream allocation. So, when this setting is applied to
the DIP-switches, the actual configuration depends on GYDA commands.
On power-on, the actual swap setting will be according to the dip-switches, except that
when set as in Example 4, the last GYDA command will still be active
The factory default setting will be as in example 4, with last GYDA command stored in
non-volatile memory as in example 1. This means that the default start-up is “no channel
swapping”.
All other DIP switch settings are however ‘safe’ in the sense that GYDA cannot override
these settings.