User guide

August 2001 191
Connecting Boards in an H.100 bus
Mapping Board Resources
The MVIP-95 board uses four internal data streams for a
four-port board, eight internal data streams for an eight-port
board, or 12 internal data streams for a 12-port board. Each
stream carries four resources and uses four timeslots on the
stream. The stream and timeslot assignments are set by the
hardware and are not configurable.
In the case of the Vantage PCI board, the first four VP resources
use streams 0 and 1 to transmit and receive data. The first four
line resources use streams 2 and 3 to transmit and receive data.
The second four VP resources use streams 4 and 5 to transmit
and receive data. The second four line resources use streams 6
and 7 to transmit and receive data. Figure 40 shows local
streams numbered on a Vantage PCI board.
Figure 40. Local Streams on a Vantage PCI Board
The resources on each stream are assigned sequentially to
timeslots 0, 8, 16, and 24, as shown in Table 30. For example,
the first VP resource would transmit data on input stream 0,
timeslot 0. It would receive data on output stream 1, timeslot 0.
The second VP resource would receive data on stream 0,
timeslot 8.
As Table 30 shows, the streams are designated input and
output. Those designations are in reference to the switch block.
A resource transmits data on the input stream (input to the
switch block) and receives data on the output stream (output
from the switch block).
4
Lines 0, 1
Lines 2, 3
Lines 6, 7
Lines 4, 5
5
7
6
1
0
3
2
Vantage PCI
DSP0
VP 0-3
DSP1
VP 4-7