Sierra Video Yosemite - Manual (Page 70)

SIERRA VIDEO
64
System Size and Terminal Command
A routing switcher with a 505150 process has a maximum matrix size of 128 sources, 256 destinations,
and 8 levels while one with a 504001 has a maximum matrix size of 128 sources, 128 destinations, and 8
levels. The actual size is set with the TyLinx Pro software program (see TyLinx Pro manual for details),
terminal protocol control/W “U” subcommand or the host protocol “G ROUTER_INFO” command. Each
physical crosspoint layer has its own size and other characteristics, which are programmed using one of
the programs mentioned above, (TyLinx Pro /router configuration, the terminal protocol control/W
command or the host protocol “G LEVEL_INFO” command.
In the Yosemite router, it is possible for a router to be only partially stuffed with crosspoint hardware and
input and output buffer boards, and in that case, there may be holes in the input and/or output space. The
size of these “holes” is recorded in the non-volatile memory of the control processor, along with other
crosspoint matrix layer information, by using the control/W “L” subcommand. The command asks for the
size of the input and output holes, and the size of the input and output groups in between each “hole”.
Thus, an input hole size of 24 and an input group size of 8 would indicate that inputs 1-8 are present, 9-
32 are absent, 33-40 are present, 41-64 are absent, etc. The number of inputs and outputs specified in
the control/W “L” subcommand for each level includes the holes. The sum of the hole size and group size
always divides the number of inputs/outputs evenly. For example, if there are 128 inputs and an input
hole size of 24 and an input group size of 8, then 24+8=32 and 32 evenly divides 128. The actual number
of inputs or outputs is thus seen to be the number specified with the control/W “L” subcommand divided
by the sum of the hole and group size, multiplied by the group size. For the above numbers of 128, 24,
and 8, the actual number of inputs is (128/32) x8 = 32 inputs. The other 96 inputs out of the total of 128
are taken up by the holes.
The type of hardware output mapping that is selected using the control/W “L” subcommand affects the
way the router maps input and output numbers to the crosspoint hardware. Many types of router
crosspoints use linear mapping. Some, however, use other types of mapping. The following types of
mapping are available:
 "Linear" (inputs and outputs both count up linearly in the hardware)
 “32/24 Out" (each group of 32 output numbers contain 24 actual outputs)
 “Series 20” (high nibble of output byte is decoded strobes, low nibble is BCD)
 “1616” (high nibble of output byte is decoded strobes, low nibble is binary)
 “1208V5” (input mapping of 12 values only; within first 16, 4 are skipped)
This list may be expanded in the future.