cx29503 Mindspeed Technologies, cx29503 Datasheet - Page 81

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

CX29503 Data Sheet
2.10.1
29503-DSH-002-B
Summary of Payload TSB
The CX29503 serves as the timing master for the TSB Interface and provides clocks
and alignment/marker signals (strobes) to the external device connected via this
interface. The external device provides and accepts data to and from the CX29503
under direction of the clock and control signals provided by the CX29503.
See
Payload TSB transmit and receive clocks from the same clock source. The clock
source for the TSB is listed in
Table 2-6. TSB Bandwidths
The Payload TSB provides full duplex operation at one of the three data rates listed in
Table
frame structured as shown in
receive strobes to mark the first bit of each transmit and receive TSB frame.
Figure 2-14. TSB Payload Time Slot Diagram
Table 2-6
2-6. The data on the Payload TSB is framed and consists of 84 time slots per
Line Interface
SONET/SDH
Serial DS3
1
1
Serial E3
Mindspeed Technologies™
2
2
Time Slot No. 1 is first byte of
Payload TSB Frame
the TSB bandwidths for different line rates. The CX29503 derives the
3
3
Preliminary Information
4
4
5
5
6
6
Figure
Table
7
8
1 Byte per Time Slot
(Mbps ± 20 ppm)
4-10.
2-14. The CX29503 generates transmit and
. . .
TSB Bandwidth
Time Slot No. 84 is last byte of
Payload
51.840
44.736
44.736
Payload TSB Frame = 84 Time Slots
Payload TSB Frame
79 80 81 82 83 84
(Mbps ± 20 ppm)
TSB Bandwidth
Overhead
12.960
11.184
11.184
Functional Description
100702_022
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