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Routing Time Division Multiplex Timeslots
6 - 8
Figure 19: Switching of TDM Channels
Routing the timeslots in the described way is done by programming the PowerQUI-
CC II and T8105 registers in your communications protocol driver. Figure 20
"Connection of Local TDM Streams" on the following page shows which T8105
local TDM channel data lines LDI0...LDI15 and LDO0...LDO15 are connected to
the framers' backplane receive/transmit PCM (BRPCM and BTPCM) data lines
and which T8105 local TDM channel data lines are connected to the PowerQUICC
II SI1 and SI2 TDM lines. If, for example, a timeslot is to be routed from framer 2
to PowerQUICC II TDM channel A2, it has to be routed between LDI_1 and
LDO_8 in the T8105.
Note:
•
The connection of data lines of the inter-TDM link is shown in a separate
figure (Figure 21 "Connection of Data Lines in Inter-TDM Link" page 6-
10).
•
The local TDM channel data lines LDO_12...15 and LDI_12...15 can be
used for subrate switching to be able to transmit more calls as is required
by mobile communication.
TDM Channel Configuration
PPC/PMC-8260/DS1
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