cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 85

• Manufacturer Part Number: cx29503
• Description: Cx29503 Broadband Access Multiplexer Data Sheet
• Manufacturer: Mindspeed Technologies

CX29503 Data Sheet
2.10.4.3
29503-DSH-002-B
Mapping of Payload to TSB Payload Time Slots
The Payload TSB transports up to 28 independent data paths. Each data path in both
the transmit and receive directions is transported over a set of multiple time slots
within each Payload TSB frame. At either end of the Payload TSB, each multiple set
of time slots is concatenated into a Virtual Serial Port (VSP) that corresponds to its
respective data path. This provides full-duplex communication for each data path
across the bus.
Mapping of Digital Level 1 Signals
In general, data passed through each digital level 1 framer/mapper is mapped to/from
a unique set of 3 or 4 time slots on the Payload TSB.
Table 2-8
channelized DS1/E1 (level 1) signals between the CX29503 framers/mappers and the
concatenated Payload TSB Frame time slots. The table also defines the CX28500
HDLC controller logical channels that correspond to the concatenated TSB time slots.
Column 1 in
groups are at digital level 2 and they contain 3 or 4 DS1/E1 tributaries. The tributaries
are numbered up to 4 as shown in Column 2.
Table 2-8
if the multiplexing mode is M13 for DS2 Tributary Group 1, the DS2 Tributary group
contains 4 DS1 tributaries (numbered 1, 2, 3 and 4 in Column 2). The DS1 tributaries
occupy the time slots listed in column 3 (1, 29, and 57 for tributary 1; 8, 36, and 64 for
tributary 2; etc.).
As indicated by the note in
and E1 signals. Except for the E13 multiplexing mode, different tributary groups can
contain different level 1 signals. For example, if tributary group 1 contains DS1
signals, then tributary group 2 can contain DS1 or E1 signals. If the E13 multiplexing
mode is selected, then all tributaries for all tributary groups are configured as 16 × E1
signals and the time slots are assigned as shown in Column 5.
defines for both the transmit and receive direction the mapping of
lists the assigned time slots based on the Multiplexing mode. For example,
Mindspeed Technologies™
Table 2-8
Preliminary Information
lists the 7 tributary groups within the CX29503. The tributary
Table
2-8, a tributary group cannot contain a mix of DS1
Functional Description
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